/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:20:30,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:20:30,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:20:30,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:20:30,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:20:30,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:20:30,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:20:30,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:20:30,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:20:30,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:20:30,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:20:30,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:20:30,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:20:30,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:20:30,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:20:30,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:20:30,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:20:30,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:20:30,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:20:30,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:20:30,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:20:30,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:20:30,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:20:30,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:20:30,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:20:30,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:20:30,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:20:30,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:20:30,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:20:30,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:20:30,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:20:30,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:20:30,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:20:30,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:20:30,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:20:30,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:20:30,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:20:30,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:20:30,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:20:30,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:20:30,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:20:30,866 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 04:20:30,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:20:30,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:20:30,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:20:30,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:20:30,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:20:30,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:20:30,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:20:30,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:20:30,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:20:30,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:20:30,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:20:30,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:20:30,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:20:30,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:20:30,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:20:30,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:20:30,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:20:30,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:20:30,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:20:30,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:20:30,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:20:30,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:20:30,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:20:30,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:20:30,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:20:31,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:20:31,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:20:31,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:20:31,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:20:31,227 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:20:31,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39.c [2020-10-14 04:20:31,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553cf6d2e/7593e28088784637a433974c84029581/FLAG0a1fb4064 [2020-10-14 04:20:32,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:20:32,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label39.c [2020-10-14 04:20:32,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553cf6d2e/7593e28088784637a433974c84029581/FLAG0a1fb4064 [2020-10-14 04:20:32,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/553cf6d2e/7593e28088784637a433974c84029581 [2020-10-14 04:20:32,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:20:32,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:20:32,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:20:32,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:20:32,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:20:32,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:20:32" (1/1) ... [2020-10-14 04:20:32,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:32, skipping insertion in model container [2020-10-14 04:20:32,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:20:32" (1/1) ... [2020-10-14 04:20:32,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:20:32,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:20:33,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:20:33,880 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:20:34,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:20:34,384 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:20:34,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34 WrapperNode [2020-10-14 04:20:34,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:20:34,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:20:34,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:20:34,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:20:34,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... [2020-10-14 04:20:34,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:20:34,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:20:34,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:20:34,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:20:34,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:20:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:20:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:20:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:20:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:20:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:20:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:20:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:20:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:20:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:20:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:20:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:20:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:20:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:20:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:20:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:20:40,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:20:40,475 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:20:40,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:20:40 BoogieIcfgContainer [2020-10-14 04:20:40,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:20:40,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:20:40,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:20:40,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:20:40,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:20:32" (1/3) ... [2020-10-14 04:20:40,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7b1251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:20:40, skipping insertion in model container [2020-10-14 04:20:40,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:20:34" (2/3) ... [2020-10-14 04:20:40,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7b1251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:20:40, skipping insertion in model container [2020-10-14 04:20:40,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:20:40" (3/3) ... [2020-10-14 04:20:40,492 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label39.c [2020-10-14 04:20:40,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:20:40,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:20:40,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:20:40,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:20:40,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:20:40,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:20:40,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:20:40,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:20:40,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:20:40,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:20:40,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:20:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:20:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:20:40,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:40,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:40,591 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1436642090, now seen corresponding path program 1 times [2020-10-14 04:20:40,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:40,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470099747] [2020-10-14 04:20:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:40,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:40,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:20:40,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 04:20:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:40,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:20:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:20:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:20:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:20:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:41,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:20:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:41,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:20:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:20:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:41,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470099747] [2020-10-14 04:20:41,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:20:41,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:20:41,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548059688] [2020-10-14 04:20:41,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:20:41,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:20:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:20:41,154 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:20:47,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:47,881 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:20:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:47,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 04:20:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:47,911 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:20:47,912 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:20:47,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:20:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:20:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:20:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-14 04:20:48,066 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 19 [2020-10-14 04:20:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:48,066 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-14 04:20:48,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:20:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-14 04:20:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 04:20:48,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:48,073 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:20:48,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:20:48,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1826688270, now seen corresponding path program 1 times [2020-10-14 04:20:48,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:48,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510157895] [2020-10-14 04:20:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:48,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:48,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 04:20:48,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-14 04:20:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:48,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:20:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:20:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:20:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:20:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:48,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:49,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:20:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:20:49,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:49,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:20:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:49,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510157895] [2020-10-14 04:20:49,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:49,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853453115] [2020-10-14 04:20:49,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:49,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:49,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:49,076 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 5 states. [2020-10-14 04:21:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:00,554 INFO L93 Difference]: Finished difference Result 3561 states and 6023 transitions. [2020-10-14 04:21:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:00,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-14 04:21:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:00,567 INFO L225 Difference]: With dead ends: 3561 [2020-10-14 04:21:00,568 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:21:00,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:21:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2020-10-14 04:21:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-10-14 04:21:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3185 transitions. [2020-10-14 04:21:00,630 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3185 transitions. Word has length 89 [2020-10-14 04:21:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:00,631 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 3185 transitions. [2020-10-14 04:21:00,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3185 transitions. [2020-10-14 04:21:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 04:21:00,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:00,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:00,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:21:00,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:00,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1995359571, now seen corresponding path program 1 times [2020-10-14 04:21:00,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:00,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596863100] [2020-10-14 04:21:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:21:01,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:21:01,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 04:21:01,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:21:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:21:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:01,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:21:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:01,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:01,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:01,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:21:01,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:01,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:21:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:01,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596863100] [2020-10-14 04:21:01,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:01,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:21:01,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077724019] [2020-10-14 04:21:01,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:21:01,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:21:01,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:01,270 INFO L87 Difference]: Start difference. First operand 2138 states and 3185 transitions. Second operand 6 states. [2020-10-14 04:21:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:15,357 INFO L93 Difference]: Finished difference Result 5688 states and 8581 transitions. [2020-10-14 04:21:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:21:15,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-14 04:21:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:15,376 INFO L225 Difference]: With dead ends: 5688 [2020-10-14 04:21:15,377 INFO L226 Difference]: Without dead ends: 3556 [2020-10-14 04:21:15,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:21:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-10-14 04:21:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3552. [2020-10-14 04:21:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2020-10-14 04:21:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5004 transitions. [2020-10-14 04:21:15,465 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5004 transitions. Word has length 90 [2020-10-14 04:21:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:15,465 INFO L479 AbstractCegarLoop]: Abstraction has 3552 states and 5004 transitions. [2020-10-14 04:21:15,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:21:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5004 transitions. [2020-10-14 04:21:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 04:21:15,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:15,468 INFO L422 BasicCegarLoop]: trace histogram [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 04:21:15,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:21:15,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash 540685010, now seen corresponding path program 1 times [2020-10-14 04:21:15,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:15,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246682307] [2020-10-14 04:21:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 04:21:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:21:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-14 04:21:16,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:21:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:21:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:21:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:16,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:21:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:21:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:16,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:21:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:16,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246682307] [2020-10-14 04:21:16,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:16,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:21:16,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293058047] [2020-10-14 04:21:16,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:21:16,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:16,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:21:16,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:21:16,333 INFO L87 Difference]: Start difference. First operand 3552 states and 5004 transitions. Second operand 5 states. [2020-10-14 04:21:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:26,609 INFO L93 Difference]: Finished difference Result 9950 states and 14310 transitions. [2020-10-14 04:21:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:26,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 04:21:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:26,646 INFO L225 Difference]: With dead ends: 9950 [2020-10-14 04:21:26,646 INFO L226 Difference]: Without dead ends: 6404 [2020-10-14 04:21:26,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6404 states. [2020-10-14 04:21:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6404 to 6400. [2020-10-14 04:21:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2020-10-14 04:21:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 8512 transitions. [2020-10-14 04:21:26,882 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 8512 transitions. Word has length 107 [2020-10-14 04:21:26,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:26,885 INFO L479 AbstractCegarLoop]: Abstraction has 6400 states and 8512 transitions. [2020-10-14 04:21:26,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 8512 transitions. [2020-10-14 04:21:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:21:26,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:26,899 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:21:26,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:21:26,900 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1068075242, now seen corresponding path program 1 times [2020-10-14 04:21:26,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:26,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151936843] [2020-10-14 04:21:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:27,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 04:21:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:21:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-14 04:21:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:27,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 04:21:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:21:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:27,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:27,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:21:27,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 04:21:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:27,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:21:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:21:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:28,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151936843] [2020-10-14 04:21:28,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:28,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:21:28,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470304482] [2020-10-14 04:21:28,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:21:28,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:28,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:21:28,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:21:28,071 INFO L87 Difference]: Start difference. First operand 6400 states and 8512 transitions. Second operand 5 states. [2020-10-14 04:21:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:39,589 INFO L93 Difference]: Finished difference Result 18481 states and 25071 transitions. [2020-10-14 04:21:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:39,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:21:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:39,659 INFO L225 Difference]: With dead ends: 18481 [2020-10-14 04:21:39,659 INFO L226 Difference]: Without dead ends: 12087 [2020-10-14 04:21:39,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:39,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2020-10-14 04:21:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 12079. [2020-10-14 04:21:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12079 states. [2020-10-14 04:21:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12079 states to 12079 states and 15998 transitions. [2020-10-14 04:21:39,976 INFO L78 Accepts]: Start accepts. Automaton has 12079 states and 15998 transitions. Word has length 151 [2020-10-14 04:21:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:39,977 INFO L479 AbstractCegarLoop]: Abstraction has 12079 states and 15998 transitions. [2020-10-14 04:21:39,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12079 states and 15998 transitions. [2020-10-14 04:21:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 04:21:39,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:39,980 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:21:39,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:21:39,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash -484064813, now seen corresponding path program 1 times [2020-10-14 04:21:39,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:39,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227859134] [2020-10-14 04:21:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 04:21:40,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:21:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:21:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:21:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:40,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:40,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:21:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 04:21:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:40,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 04:21:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:21:40,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227859134] [2020-10-14 04:21:40,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:21:40,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:21:40,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024833106] [2020-10-14 04:21:40,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:40,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:40,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:40,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:40,744 INFO L87 Difference]: Start difference. First operand 12079 states and 15998 transitions. Second operand 7 states. [2020-10-14 04:21:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:49,206 INFO L93 Difference]: Finished difference Result 33634 states and 45728 transitions. [2020-10-14 04:21:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:49,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-14 04:21:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:49,265 INFO L225 Difference]: With dead ends: 33634 [2020-10-14 04:21:49,265 INFO L226 Difference]: Without dead ends: 17276 [2020-10-14 04:21:49,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:49,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2020-10-14 04:21:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 15848. [2020-10-14 04:21:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15848 states. [2020-10-14 04:21:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15848 states to 15848 states and 18648 transitions. [2020-10-14 04:21:49,692 INFO L78 Accepts]: Start accepts. Automaton has 15848 states and 18648 transitions. Word has length 154 [2020-10-14 04:21:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:49,692 INFO L479 AbstractCegarLoop]: Abstraction has 15848 states and 18648 transitions. [2020-10-14 04:21:49,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 15848 states and 18648 transitions. [2020-10-14 04:21:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 04:21:49,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:49,699 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:49,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:21:49,699 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:49,700 INFO L82 PathProgramCache]: Analyzing trace with hash -830116102, now seen corresponding path program 1 times [2020-10-14 04:21:49,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:49,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347403048] [2020-10-14 04:21:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 04:21:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-10-14 04:21:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:21:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 04:21:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:52,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:52,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:52,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:21:52,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:21:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:21:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:21:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 04:21:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:52,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 04:21:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:52,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347403048] [2020-10-14 04:21:52,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:52,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:52,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672429941] [2020-10-14 04:21:52,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:52,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:52,845 INFO L87 Difference]: Start difference. First operand 15848 states and 18648 transitions. Second operand 7 states. [2020-10-14 04:22:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:01,641 INFO L93 Difference]: Finished difference Result 41569 states and 49635 transitions. [2020-10-14 04:22:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:01,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-14 04:22:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:01,698 INFO L225 Difference]: With dead ends: 41569 [2020-10-14 04:22:01,698 INFO L226 Difference]: Without dead ends: 25727 [2020-10-14 04:22:01,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25727 states. [2020-10-14 04:22:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25727 to 25005. [2020-10-14 04:22:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25005 states. [2020-10-14 04:22:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25005 states to 25005 states and 28930 transitions. [2020-10-14 04:22:02,156 INFO L78 Accepts]: Start accepts. Automaton has 25005 states and 28930 transitions. Word has length 217 [2020-10-14 04:22:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:02,156 INFO L479 AbstractCegarLoop]: Abstraction has 25005 states and 28930 transitions. [2020-10-14 04:22:02,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25005 states and 28930 transitions. [2020-10-14 04:22:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 04:22:02,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:02,165 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:02,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:22:02,165 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash -112400449, now seen corresponding path program 1 times [2020-10-14 04:22:02,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:02,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791357720] [2020-10-14 04:22:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 04:22:04,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-14 04:22:04,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:04,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-10-14 04:22:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:22:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:04,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:22:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:04,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:22:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:04,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:22:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:22:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:22:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 04:22:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:04,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:22:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:22:04,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:04,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:04,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 04:22:04,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-14 04:22:04,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791357720] [2020-10-14 04:22:04,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:04,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:22:04,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828693915] [2020-10-14 04:22:04,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:22:04,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:04,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:22:04,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:22:04,740 INFO L87 Difference]: Start difference. First operand 25005 states and 28930 transitions. Second operand 5 states. [2020-10-14 04:22:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:10,745 INFO L93 Difference]: Finished difference Result 50008 states and 57871 transitions. [2020-10-14 04:22:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:22:10,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-14 04:22:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:10,803 INFO L225 Difference]: With dead ends: 50008 [2020-10-14 04:22:10,803 INFO L226 Difference]: Without dead ends: 25009 [2020-10-14 04:22:10,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:22:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25009 states. [2020-10-14 04:22:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25009 to 25005. [2020-10-14 04:22:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25005 states. [2020-10-14 04:22:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25005 states to 25005 states and 27386 transitions. [2020-10-14 04:22:11,190 INFO L78 Accepts]: Start accepts. Automaton has 25005 states and 27386 transitions. Word has length 290 [2020-10-14 04:22:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:11,191 INFO L479 AbstractCegarLoop]: Abstraction has 25005 states and 27386 transitions. [2020-10-14 04:22:11,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:22:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25005 states and 27386 transitions. [2020-10-14 04:22:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-14 04:22:11,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:11,211 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:11,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:22:11,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash -717534638, now seen corresponding path program 1 times [2020-10-14 04:22:11,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:11,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21951761] [2020-10-14 04:22:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:11,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1682 [2020-10-14 04:22:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:22:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:12,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:22:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:22:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:22:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:22:13,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:22:13,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:13,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:22:13,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 04:22:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:13,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:22:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:22:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:13,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:22:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 108 proven. 95 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:22:13,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21951761] [2020-10-14 04:22:13,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:13,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:13,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351624950] [2020-10-14 04:22:13,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:13,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:13,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:13,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:13,439 INFO L87 Difference]: Start difference. First operand 25005 states and 27386 transitions. Second operand 7 states. [2020-10-14 04:22:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:20,471 INFO L93 Difference]: Finished difference Result 60851 states and 67774 transitions. [2020-10-14 04:22:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:20,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-14 04:22:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:20,549 INFO L225 Difference]: With dead ends: 60851 [2020-10-14 04:22:20,549 INFO L226 Difference]: Without dead ends: 35852 [2020-10-14 04:22:20,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35852 states. [2020-10-14 04:22:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35852 to 34395. [2020-10-14 04:22:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34395 states. [2020-10-14 04:22:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34395 states to 34395 states and 37616 transitions. [2020-10-14 04:22:21,067 INFO L78 Accepts]: Start accepts. Automaton has 34395 states and 37616 transitions. Word has length 321 [2020-10-14 04:22:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:21,067 INFO L479 AbstractCegarLoop]: Abstraction has 34395 states and 37616 transitions. [2020-10-14 04:22:21,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 34395 states and 37616 transitions. [2020-10-14 04:22:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 04:22:21,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:21,080 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:21,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:22:21,081 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:21,081 INFO L82 PathProgramCache]: Analyzing trace with hash -191738605, now seen corresponding path program 1 times [2020-10-14 04:22:21,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:21,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073620353] [2020-10-14 04:22:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 04:22:24,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-10-14 04:22:24,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:22:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:22:24,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 04:22:24,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:22:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:22:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:22:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:22:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:22:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:24,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:24,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:22:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:24,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 04:22:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:25,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:22:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 04:22:25,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:25,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 04:22:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 178 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 04:22:25,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073620353] [2020-10-14 04:22:25,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:25,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:22:25,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681583006] [2020-10-14 04:22:25,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:22:25,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:22:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:22:25,187 INFO L87 Difference]: Start difference. First operand 34395 states and 37616 transitions. Second operand 9 states. [2020-10-14 04:22:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:39,229 INFO L93 Difference]: Finished difference Result 91612 states and 104979 transitions. [2020-10-14 04:22:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:22:39,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2020-10-14 04:22:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:39,386 INFO L225 Difference]: With dead ends: 91612 [2020-10-14 04:22:39,386 INFO L226 Difference]: Without dead ends: 57223 [2020-10-14 04:22:39,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:22:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57223 states. [2020-10-14 04:22:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57223 to 53788. [2020-10-14 04:22:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53788 states. [2020-10-14 04:22:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53788 states to 53788 states and 59430 transitions. [2020-10-14 04:22:40,414 INFO L78 Accepts]: Start accepts. Automaton has 53788 states and 59430 transitions. Word has length 322 [2020-10-14 04:22:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:40,414 INFO L479 AbstractCegarLoop]: Abstraction has 53788 states and 59430 transitions. [2020-10-14 04:22:40,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:22:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 53788 states and 59430 transitions. [2020-10-14 04:22:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 04:22:40,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:40,438 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:40,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:22:40,439 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:40,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1173572621, now seen corresponding path program 1 times [2020-10-14 04:22:40,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:40,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108840275] [2020-10-14 04:22:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-14 04:22:42,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:22:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-14 04:22:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:42,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:22:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:22:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:42,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:42,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:42,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:42,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:22:42,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:22:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:42,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:22:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 04:22:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:42,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:22:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 04:22:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:42,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:22:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-14 04:22:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:42,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:22:42,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:22:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 109 proven. 111 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:22:42,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108840275] [2020-10-14 04:22:42,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:42,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:42,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537685982] [2020-10-14 04:22:42,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:42,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:42,547 INFO L87 Difference]: Start difference. First operand 53788 states and 59430 transitions. Second operand 7 states. [2020-10-14 04:22:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:54,324 INFO L93 Difference]: Finished difference Result 123636 states and 140010 transitions. [2020-10-14 04:22:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:54,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-14 04:22:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:54,483 INFO L225 Difference]: With dead ends: 123636 [2020-10-14 04:22:54,483 INFO L226 Difference]: Without dead ends: 69854 [2020-10-14 04:22:54,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69854 states. [2020-10-14 04:22:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69854 to 69491. [2020-10-14 04:22:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69491 states. [2020-10-14 04:22:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69491 states to 69491 states and 76432 transitions. [2020-10-14 04:22:55,681 INFO L78 Accepts]: Start accepts. Automaton has 69491 states and 76432 transitions. Word has length 338 [2020-10-14 04:22:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:55,682 INFO L479 AbstractCegarLoop]: Abstraction has 69491 states and 76432 transitions. [2020-10-14 04:22:55,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 69491 states and 76432 transitions. [2020-10-14 04:22:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-14 04:22:55,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:55,695 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:22:55,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:22:55,696 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:55,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash -966550610, now seen corresponding path program 1 times [2020-10-14 04:22:55,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:55,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277205397] [2020-10-14 04:22:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-14 04:22:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:22:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2764 [2020-10-14 04:22:58,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 04:22:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:22:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:58,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:58,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:58,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:58,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:58,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:58,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:22:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 04:22:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:58,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:22:58,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:58,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:22:58,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:58,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:22:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 04:22:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:58,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:22:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 126 proven. 111 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:22:58,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277205397] [2020-10-14 04:22:58,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:58,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:58,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367895866] [2020-10-14 04:22:58,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:58,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:58,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:58,886 INFO L87 Difference]: Start difference. First operand 69491 states and 76432 transitions. Second operand 7 states. [2020-10-14 04:23:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:06,735 INFO L93 Difference]: Finished difference Result 129891 states and 143243 transitions. [2020-10-14 04:23:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:23:06,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-14 04:23:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:06,840 INFO L225 Difference]: With dead ends: 129891 [2020-10-14 04:23:06,840 INFO L226 Difference]: Without dead ends: 66062 [2020-10-14 04:23:06,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66062 states. [2020-10-14 04:23:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66062 to 65340. [2020-10-14 04:23:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65340 states. [2020-10-14 04:23:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65340 states to 65340 states and 71290 transitions. [2020-10-14 04:23:07,747 INFO L78 Accepts]: Start accepts. Automaton has 65340 states and 71290 transitions. Word has length 355 [2020-10-14 04:23:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:07,748 INFO L479 AbstractCegarLoop]: Abstraction has 65340 states and 71290 transitions. [2020-10-14 04:23:07,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 65340 states and 71290 transitions. [2020-10-14 04:23:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 04:23:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:07,764 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:07,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:23:07,764 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1822505105, now seen corresponding path program 1 times [2020-10-14 04:23:07,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:07,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218579686] [2020-10-14 04:23:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 04:23:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:23:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:23:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:09,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:09,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:09,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:23:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:09,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:23:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:23:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:23:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:23:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:23:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 149 proven. 111 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:23:09,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218579686] [2020-10-14 04:23:09,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:09,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:09,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796910107] [2020-10-14 04:23:09,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:09,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:09,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:09,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:09,674 INFO L87 Difference]: Start difference. First operand 65340 states and 71290 transitions. Second operand 7 states. [2020-10-14 04:23:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:17,777 INFO L93 Difference]: Finished difference Result 141962 states and 156483 transitions. [2020-10-14 04:23:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:23:17,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-14 04:23:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:17,887 INFO L225 Difference]: With dead ends: 141962 [2020-10-14 04:23:17,887 INFO L226 Difference]: Without dead ends: 76632 [2020-10-14 04:23:17,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76632 states. [2020-10-14 04:23:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76632 to 72370. [2020-10-14 04:23:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72370 states. [2020-10-14 04:23:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72370 states to 72370 states and 78147 transitions. [2020-10-14 04:23:18,826 INFO L78 Accepts]: Start accepts. Automaton has 72370 states and 78147 transitions. Word has length 388 [2020-10-14 04:23:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:18,827 INFO L479 AbstractCegarLoop]: Abstraction has 72370 states and 78147 transitions. [2020-10-14 04:23:18,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 72370 states and 78147 transitions. [2020-10-14 04:23:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-14 04:23:18,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:18,842 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:18,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:23:18,843 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash -178846758, now seen corresponding path program 1 times [2020-10-14 04:23:18,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:18,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183939541] [2020-10-14 04:23:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:22,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:22,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3116 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 280 [2020-10-14 04:23:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:22,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:23:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:22,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:22,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 04:23:22,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 04:23:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-14 04:23:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:23:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 159 proven. 134 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:23:23,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183939541] [2020-10-14 04:23:23,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:23,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:23,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596828280] [2020-10-14 04:23:23,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:23,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:23,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:23,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:23,072 INFO L87 Difference]: Start difference. First operand 72370 states and 78147 transitions. Second operand 7 states. [2020-10-14 04:23:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:32,124 INFO L93 Difference]: Finished difference Result 156156 states and 169723 transitions. [2020-10-14 04:23:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:23:32,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 553 [2020-10-14 04:23:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:32,256 INFO L225 Difference]: With dead ends: 156156 [2020-10-14 04:23:32,256 INFO L226 Difference]: Without dead ends: 84494 [2020-10-14 04:23:32,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:23:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84494 states. [2020-10-14 04:23:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84494 to 80962. [2020-10-14 04:23:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80962 states. [2020-10-14 04:23:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80962 states to 80962 states and 88060 transitions. [2020-10-14 04:23:33,490 INFO L78 Accepts]: Start accepts. Automaton has 80962 states and 88060 transitions. Word has length 553 [2020-10-14 04:23:33,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:33,491 INFO L479 AbstractCegarLoop]: Abstraction has 80962 states and 88060 transitions. [2020-10-14 04:23:33,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:23:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 80962 states and 88060 transitions. [2020-10-14 04:23:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-14 04:23:33,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:33,517 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:33,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:23:33,517 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:33,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1358304756, now seen corresponding path program 1 times [2020-10-14 04:23:33,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:33,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797205843] [2020-10-14 04:23:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-14 04:23:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5774 [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 540 [2020-10-14 04:23:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 04:23:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:39,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:39,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:39,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 401 [2020-10-14 04:23:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:23:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:39,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 04:23:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 04:23:39,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:39,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 04:23:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:40,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-14 04:23:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:40,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:40,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:23:40,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 04:23:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:40,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:40,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 04:23:40,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 04:23:40,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797205843] [2020-10-14 04:23:40,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:40,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:23:40,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522357457] [2020-10-14 04:23:40,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:23:40,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:23:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:23:40,631 INFO L87 Difference]: Start difference. First operand 80962 states and 88060 transitions. Second operand 8 states. [2020-10-14 04:23:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:23:51,244 INFO L93 Difference]: Finished difference Result 170343 states and 185475 transitions. [2020-10-14 04:23:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:23:51,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 683 [2020-10-14 04:23:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:23:51,445 INFO L225 Difference]: With dead ends: 170343 [2020-10-14 04:23:51,445 INFO L226 Difference]: Without dead ends: 87254 [2020-10-14 04:23:51,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:23:51,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87254 states. [2020-10-14 04:23:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87254 to 84410. [2020-10-14 04:23:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84410 states. [2020-10-14 04:23:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84410 states to 84410 states and 90482 transitions. [2020-10-14 04:23:52,358 INFO L78 Accepts]: Start accepts. Automaton has 84410 states and 90482 transitions. Word has length 683 [2020-10-14 04:23:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:23:52,359 INFO L479 AbstractCegarLoop]: Abstraction has 84410 states and 90482 transitions. [2020-10-14 04:23:52,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:23:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 84410 states and 90482 transitions. [2020-10-14 04:23:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-14 04:23:52,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:23:52,387 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:23:52,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:23:52,387 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:23:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:23:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 469759388, now seen corresponding path program 1 times [2020-10-14 04:23:52,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:23:52,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146248201] [2020-10-14 04:23:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:23:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 813 [2020-10-14 04:23:56,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:23:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3831 [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 540 [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 04:23:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:56,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:56,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-14 04:23:56,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 04:23:56,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 401 [2020-10-14 04:23:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:23:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 04:23:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-14 04:23:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:56,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:23:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2020-10-14 04:23:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 279 proven. 111 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-14 04:23:58,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146248201] [2020-10-14 04:23:58,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:58,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:58,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161937104] [2020-10-14 04:23:58,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:58,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:58,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:58,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:58,644 INFO L87 Difference]: Start difference. First operand 84410 states and 90482 transitions. Second operand 7 states. [2020-10-14 04:24:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:24:06,071 INFO L93 Difference]: Finished difference Result 167437 states and 179543 transitions. [2020-10-14 04:24:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:24:06,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 795 [2020-10-14 04:24:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:24:06,248 INFO L225 Difference]: With dead ends: 167437 [2020-10-14 04:24:06,249 INFO L226 Difference]: Without dead ends: 83735 [2020-10-14 04:24:06,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:24:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83735 states. [2020-10-14 04:24:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83735 to 79455. [2020-10-14 04:24:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79455 states. [2020-10-14 04:24:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79455 states to 79455 states and 83521 transitions. [2020-10-14 04:24:07,040 INFO L78 Accepts]: Start accepts. Automaton has 79455 states and 83521 transitions. Word has length 795 [2020-10-14 04:24:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:24:07,041 INFO L479 AbstractCegarLoop]: Abstraction has 79455 states and 83521 transitions. [2020-10-14 04:24:07,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:24:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 79455 states and 83521 transitions. [2020-10-14 04:24:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2020-10-14 04:24:07,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:24:07,065 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:24:07,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:24:07,065 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:24:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:24:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 843938110, now seen corresponding path program 1 times [2020-10-14 04:24:07,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:24:07,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718058638] [2020-10-14 04:24:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:24:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:24:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:07,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:24:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking...