/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:27:13,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:27:13,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:27:13,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:27:13,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:27:13,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:27:13,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:27:13,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:27:13,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:27:13,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:27:13,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:27:13,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:27:13,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:27:13,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:27:13,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:27:13,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:27:13,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:27:13,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:27:13,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:27:13,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:27:13,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:27:13,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:27:13,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:27:13,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:27:13,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:27:13,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:27:13,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:27:13,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:27:13,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:27:13,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:27:13,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:27:13,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:27:13,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:27:13,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:27:13,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:27:13,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:27:13,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:27:13,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:27:13,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:27:13,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:27:13,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:27:13,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:27:13,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:27:13,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:27:13,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:27:13,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:27:13,747 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:27:13,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:27:13,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:27:13,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:27:13,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:27:13,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:27:13,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:27:13,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:27:13,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:27:13,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:27:13,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:27:13,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:27:13,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:13,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:27:13,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:27:13,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:27:13,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:27:13,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:27:13,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:27:13,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:27:13,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:27:14,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:27:14,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:27:14,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:27:14,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:27:14,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:27:14,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-14 22:27:14,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7d7b8dc/a219b238502e4436a3241e86493ea95a/FLAG4e59e3e52 [2020-10-14 22:27:14,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:27:14,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label16.c [2020-10-14 22:27:14,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7d7b8dc/a219b238502e4436a3241e86493ea95a/FLAG4e59e3e52 [2020-10-14 22:27:14,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f7d7b8dc/a219b238502e4436a3241e86493ea95a [2020-10-14 22:27:14,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:27:14,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:27:14,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:14,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:27:14,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:27:14,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:14" (1/1) ... [2020-10-14 22:27:14,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9211b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:14, skipping insertion in model container [2020-10-14 22:27:14,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:27:14" (1/1) ... [2020-10-14 22:27:14,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:27:15,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:27:16,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:16,462 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:27:16,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:27:16,904 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:27:16,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16 WrapperNode [2020-10-14 22:27:16,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:27:16,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:27:16,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:27:16,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:27:16,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:16,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:16,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:16,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:17,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:17,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:17,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... [2020-10-14 22:27:17,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:27:17,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:27:17,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:27:17,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:27:17,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:27:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:27:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:27:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:27:17,244 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:27:17,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:27:17,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:27:17,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:27:17,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:27:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:27:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:27:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:27:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:27:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:27:24,071 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:27:24,072 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:27:24,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:24 BoogieIcfgContainer [2020-10-14 22:27:24,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:27:24,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:27:24,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:27:24,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:27:24,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:27:14" (1/3) ... [2020-10-14 22:27:24,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:24, skipping insertion in model container [2020-10-14 22:27:24,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:27:16" (2/3) ... [2020-10-14 22:27:24,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae6531c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:27:24, skipping insertion in model container [2020-10-14 22:27:24,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:27:24" (3/3) ... [2020-10-14 22:27:24,102 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label16.c [2020-10-14 22:27:24,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:27:24,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:27:24,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:27:24,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:27:24,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:27:24,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:27:24,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:27:24,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:27:24,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:27:24,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:27:24,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:27:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:27:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 22:27:24,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:24,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:24,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:24,220 INFO L82 PathProgramCache]: Analyzing trace with hash 736430857, now seen corresponding path program 1 times [2020-10-14 22:27:24,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:24,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647138668] [2020-10-14 22:27:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:24,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 22:27:24,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-14 22:27:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:24,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 22:27:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:27:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:24,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:27:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:24,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:27:24,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647138668] [2020-10-14 22:27:24,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:27:24,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:27:24,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381673279] [2020-10-14 22:27:24,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:27:24,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:27:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:27:24,889 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:27:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:37,159 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:27:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:27:37,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-14 22:27:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:37,188 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:27:37,189 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:27:37,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 22:27:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:27:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:27:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:27:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:27:37,334 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 31 [2020-10-14 22:27:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:37,334 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:27:37,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:27:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:27:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 22:27:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:37,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:37,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:27:37,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:37,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1876242177, now seen corresponding path program 1 times [2020-10-14 22:27:37,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:37,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722339151] [2020-10-14 22:27:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:38,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:27:38,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-10-14 22:27:38,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:38,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:27:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:38,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:27:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:38,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:38,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:27:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:38,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:38,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:27:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 22:27:39,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:39,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:27:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:27:39,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722339151] [2020-10-14 22:27:39,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:39,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:27:39,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011232205] [2020-10-14 22:27:39,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:27:39,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:39,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:27:39,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:27:39,205 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 6 states. [2020-10-14 22:27:54,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:54,105 INFO L93 Difference]: Finished difference Result 2451 states and 3903 transitions. [2020-10-14 22:27:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:27:54,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 22:27:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:54,114 INFO L225 Difference]: With dead ends: 2451 [2020-10-14 22:27:54,114 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 22:27:54,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 22:27:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 22:27:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1452. [2020-10-14 22:27:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-14 22:27:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1973 transitions. [2020-10-14 22:27:54,164 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1973 transitions. Word has length 102 [2020-10-14 22:27:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:54,164 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1973 transitions. [2020-10-14 22:27:54,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:27:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1973 transitions. [2020-10-14 22:27:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 22:27:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:54,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:27:54,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash -368469103, now seen corresponding path program 1 times [2020-10-14 22:27:54,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:54,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776583555] [2020-10-14 22:27:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 22:27:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-14 22:27:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:27:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:27:54,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:27:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 22:27:55,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:55,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:27:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:27:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:27:55,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776583555] [2020-10-14 22:27:55,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:55,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:27:55,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792681929] [2020-10-14 22:27:55,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:27:55,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:55,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:27:55,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:27:55,367 INFO L87 Difference]: Start difference. First operand 1452 states and 1973 transitions. Second operand 8 states. [2020-10-14 22:28:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:09,597 INFO L93 Difference]: Finished difference Result 3483 states and 5006 transitions. [2020-10-14 22:28:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:28:09,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-14 22:28:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:09,613 INFO L225 Difference]: With dead ends: 3483 [2020-10-14 22:28:09,613 INFO L226 Difference]: Without dead ends: 2470 [2020-10-14 22:28:09,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:28:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2020-10-14 22:28:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2415. [2020-10-14 22:28:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2415 states. [2020-10-14 22:28:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3185 transitions. [2020-10-14 22:28:09,690 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3185 transitions. Word has length 105 [2020-10-14 22:28:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:09,691 INFO L479 AbstractCegarLoop]: Abstraction has 2415 states and 3185 transitions. [2020-10-14 22:28:09,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:28:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3185 transitions. [2020-10-14 22:28:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 22:28:09,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:09,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:09,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:28:09,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:09,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1837615682, now seen corresponding path program 1 times [2020-10-14 22:28:09,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:09,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301111804] [2020-10-14 22:28:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:10,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:10,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 22:28:10,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-14 22:28:10,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:10,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:28:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 22:28:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:28:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:28:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:11,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:28:11,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 22:28:11,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:11,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:28:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:28:11,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301111804] [2020-10-14 22:28:11,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:28:11,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:28:11,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064282419] [2020-10-14 22:28:11,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:11,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:11,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:11,572 INFO L87 Difference]: Start difference. First operand 2415 states and 3185 transitions. Second operand 7 states. [2020-10-14 22:28:24,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:24,439 INFO L93 Difference]: Finished difference Result 6304 states and 8620 transitions. [2020-10-14 22:28:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:28:24,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-14 22:28:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:24,466 INFO L225 Difference]: With dead ends: 6304 [2020-10-14 22:28:24,466 INFO L226 Difference]: Without dead ends: 3428 [2020-10-14 22:28:24,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:28:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2020-10-14 22:28:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3336. [2020-10-14 22:28:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-10-14 22:28:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4038 transitions. [2020-10-14 22:28:24,589 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4038 transitions. Word has length 146 [2020-10-14 22:28:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:24,592 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 4038 transitions. [2020-10-14 22:28:24,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4038 transitions. [2020-10-14 22:28:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 22:28:24,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:24,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:24,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:28:24,600 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1800643091, now seen corresponding path program 1 times [2020-10-14 22:28:24,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:24,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970997065] [2020-10-14 22:28:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:25,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:25,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 22:28:25,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:28:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-14 22:28:25,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:25,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:28:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:28:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:25,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:25,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:25,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:25,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:25,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:25,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:28:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:25,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:28:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:28:26,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:28:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:26,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:28:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:28:26,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970997065] [2020-10-14 22:28:26,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:26,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:26,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233823362] [2020-10-14 22:28:26,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:26,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:26,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:26,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:26,249 INFO L87 Difference]: Start difference. First operand 3336 states and 4038 transitions. Second operand 7 states. [2020-10-14 22:28:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:36,986 INFO L93 Difference]: Finished difference Result 7688 states and 9823 transitions. [2020-10-14 22:28:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:28:36,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-14 22:28:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:37,012 INFO L225 Difference]: With dead ends: 7688 [2020-10-14 22:28:37,013 INFO L226 Difference]: Without dead ends: 4793 [2020-10-14 22:28:37,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:28:37,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2020-10-14 22:28:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4745. [2020-10-14 22:28:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4745 states. [2020-10-14 22:28:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 5823 transitions. [2020-10-14 22:28:37,135 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 5823 transitions. Word has length 191 [2020-10-14 22:28:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:37,136 INFO L479 AbstractCegarLoop]: Abstraction has 4745 states and 5823 transitions. [2020-10-14 22:28:37,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 5823 transitions. [2020-10-14 22:28:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 22:28:37,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:37,139 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:37,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:28:37,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:37,140 INFO L82 PathProgramCache]: Analyzing trace with hash 473966385, now seen corresponding path program 1 times [2020-10-14 22:28:37,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:37,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890642000] [2020-10-14 22:28:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:41,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 22:28:41,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4074 [2020-10-14 22:28:41,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:41,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:28:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:28:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:28:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:28:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:41,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:28:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:41,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 22:28:41,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:41,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:28:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:41,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:41,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:28:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 22:28:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:41,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:28:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 117 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:28:42,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890642000] [2020-10-14 22:28:42,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:42,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:28:42,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144068357] [2020-10-14 22:28:42,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:28:42,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:28:42,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:28:42,056 INFO L87 Difference]: Start difference. First operand 4745 states and 5823 transitions. Second operand 10 states. [2020-10-14 22:29:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:00,064 INFO L93 Difference]: Finished difference Result 11493 states and 14739 transitions. [2020-10-14 22:29:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 22:29:00,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-10-14 22:29:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:00,101 INFO L225 Difference]: With dead ends: 11493 [2020-10-14 22:29:00,101 INFO L226 Difference]: Without dead ends: 6735 [2020-10-14 22:29:00,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:29:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2020-10-14 22:29:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 6621. [2020-10-14 22:29:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6621 states. [2020-10-14 22:29:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6621 states to 6621 states and 7954 transitions. [2020-10-14 22:29:00,284 INFO L78 Accepts]: Start accepts. Automaton has 6621 states and 7954 transitions. Word has length 193 [2020-10-14 22:29:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:00,285 INFO L479 AbstractCegarLoop]: Abstraction has 6621 states and 7954 transitions. [2020-10-14 22:29:00,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:29:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6621 states and 7954 transitions. [2020-10-14 22:29:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 22:29:00,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:00,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:00,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:29:00,292 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:00,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1553337172, now seen corresponding path program 1 times [2020-10-14 22:29:00,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:00,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298554643] [2020-10-14 22:29:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:04,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:04,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 22:29:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4630 [2020-10-14 22:29:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:04,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:29:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:29:05,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:29:05,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:05,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:29:05,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 22:29:05,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:05,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:05,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:29:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:29:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:29:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:05,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:29:05,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:05,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:29:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 160 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:29:06,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298554643] [2020-10-14 22:29:06,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:06,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:29:06,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029274411] [2020-10-14 22:29:06,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:29:06,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:29:06,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:29:06,236 INFO L87 Difference]: Start difference. First operand 6621 states and 7954 transitions. Second operand 8 states. [2020-10-14 22:29:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:30,299 INFO L93 Difference]: Finished difference Result 16609 states and 20081 transitions. [2020-10-14 22:29:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:29:30,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-14 22:29:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:30,364 INFO L225 Difference]: With dead ends: 16609 [2020-10-14 22:29:30,364 INFO L226 Difference]: Without dead ends: 9992 [2020-10-14 22:29:30,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:29:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9992 states. [2020-10-14 22:29:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9992 to 9871. [2020-10-14 22:29:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9871 states. [2020-10-14 22:29:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9871 states to 9871 states and 11579 transitions. [2020-10-14 22:29:30,665 INFO L78 Accepts]: Start accepts. Automaton has 9871 states and 11579 transitions. Word has length 298 [2020-10-14 22:29:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:30,666 INFO L479 AbstractCegarLoop]: Abstraction has 9871 states and 11579 transitions. [2020-10-14 22:29:30,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:29:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9871 states and 11579 transitions. [2020-10-14 22:29:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 22:29:30,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:30,674 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:29:30,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:29:30,675 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:30,675 INFO L82 PathProgramCache]: Analyzing trace with hash -311513460, now seen corresponding path program 1 times [2020-10-14 22:29:30,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:30,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767139094] [2020-10-14 22:29:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:35,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 22:29:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:29:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 22:29:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:35,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:29:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:29:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:29:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:35,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:29:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:35,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:29:35,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 22:29:36,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:36,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:29:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:29:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:36,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:29:36,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 22:29:36,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:36,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:36,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:29:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:29:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:29:36,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:29:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:36,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:29:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 80 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:29:37,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767139094] [2020-10-14 22:29:37,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:37,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:29:37,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648450606] [2020-10-14 22:29:37,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:29:37,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:37,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:29:37,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:29:37,179 INFO L87 Difference]: Start difference. First operand 9871 states and 11579 transitions. Second operand 10 states. [2020-10-14 22:30:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:14,539 INFO L93 Difference]: Finished difference Result 26363 states and 31673 transitions. [2020-10-14 22:30:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 22:30:14,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 322 [2020-10-14 22:30:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:14,602 INFO L225 Difference]: With dead ends: 26363 [2020-10-14 22:30:14,603 INFO L226 Difference]: Without dead ends: 16490 [2020-10-14 22:30:14,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-14 22:30:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16490 states. [2020-10-14 22:30:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16490 to 15861. [2020-10-14 22:30:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15861 states. [2020-10-14 22:30:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15861 states to 15861 states and 18900 transitions. [2020-10-14 22:30:15,039 INFO L78 Accepts]: Start accepts. Automaton has 15861 states and 18900 transitions. Word has length 322 [2020-10-14 22:30:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:15,040 INFO L479 AbstractCegarLoop]: Abstraction has 15861 states and 18900 transitions. [2020-10-14 22:30:15,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:30:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15861 states and 18900 transitions. [2020-10-14 22:30:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 22:30:15,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:15,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:15,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:30:15,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -355744552, now seen corresponding path program 1 times [2020-10-14 22:30:15,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:15,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892327793] [2020-10-14 22:30:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-14 22:30:15,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-14 22:30:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:15,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 22:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 22:30:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:15,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:30:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:15,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:16,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 22:30:16,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 22:30:16,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:16,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-14 22:30:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:30:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 22:30:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:30:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:16,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 22:30:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:30:16,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892327793] [2020-10-14 22:30:16,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:16,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:30:16,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843259611] [2020-10-14 22:30:16,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:30:16,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:30:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:30:16,774 INFO L87 Difference]: Start difference. First operand 15861 states and 18900 transitions. Second operand 5 states. [2020-10-14 22:30:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:30:35,793 INFO L93 Difference]: Finished difference Result 39330 states and 48029 transitions. [2020-10-14 22:30:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:30:35,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-14 22:30:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:30:35,878 INFO L225 Difference]: With dead ends: 39330 [2020-10-14 22:30:35,878 INFO L226 Difference]: Without dead ends: 22980 [2020-10-14 22:30:35,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:30:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22980 states. [2020-10-14 22:30:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22980 to 22919. [2020-10-14 22:30:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22919 states. [2020-10-14 22:30:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22919 states to 22919 states and 26883 transitions. [2020-10-14 22:30:36,481 INFO L78 Accepts]: Start accepts. Automaton has 22919 states and 26883 transitions. Word has length 325 [2020-10-14 22:30:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:30:36,482 INFO L479 AbstractCegarLoop]: Abstraction has 22919 states and 26883 transitions. [2020-10-14 22:30:36,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:30:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22919 states and 26883 transitions. [2020-10-14 22:30:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-14 22:30:36,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:30:36,497 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:30:36,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:30:36,498 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:30:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:30:36,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1771288755, now seen corresponding path program 1 times [2020-10-14 22:30:36,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:30:36,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796302690] [2020-10-14 22:30:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:30:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-14 22:30:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:30:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 22:30:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:41,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:30:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:30:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:30:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:30:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:30:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:30:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:30:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:30:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:30:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:30:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:42,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:42,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:30:42,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:42,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 22:30:42,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:42,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:30:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:30:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:30:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:30:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:42,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:42,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:30:42,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 22:30:42,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:42,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:30:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:30:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:42,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:42,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:30:42,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:30:42,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:30:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:30:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:30:42,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:30:42,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:30:42,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:30:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:30:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 191 proven. 363 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:30:42,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796302690] [2020-10-14 22:30:42,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:30:42,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:30:42,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607499912] [2020-10-14 22:30:42,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:30:42,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:30:42,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:30:42,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:30:42,950 INFO L87 Difference]: Start difference. First operand 22919 states and 26883 transitions. Second operand 11 states.