/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=NARROWEST --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/Problem13_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:29:30,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:29:30,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:29:30,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:29:30,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:29:30,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:29:30,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:29:30,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:29:30,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:29:30,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:29:30,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:29:30,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:29:30,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:29:30,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:29:30,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:29:30,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:29:30,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:29:30,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:29:30,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:29:30,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:29:30,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:29:30,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:29:30,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:29:30,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:29:30,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:29:30,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:29:30,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:29:30,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:29:30,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:29:30,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:29:30,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:29:30,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:29:30,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:29:30,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:29:30,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:29:30,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:29:30,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:29:30,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:29:30,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:29:30,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:29:30,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:29:30,915 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 [2020-10-13 08:29:30,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:29:30,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:29:30,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:29:30,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:29:30,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:29:30,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:29:30,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:29:30,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:29:30,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:29:30,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:29:30,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:29:30,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:29:30,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:29:30,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:29:30,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:29:30,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:29:30,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:29:30,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:29:30,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:29:30,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:29:30,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:29:30,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:29:30,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:29:30,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:29:30,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:29:30,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:29:30,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:29:30,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:29:30,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:29:30,944 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:29:31,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:29:31,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:29:31,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:29:31,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:29:31,247 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:29:31,248 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-13 08:29:31,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494f68376/5bc916d4ecbe47789e2afba9909677de/FLAG66b1cd140 [2020-10-13 08:29:32,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:29:32,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label04.c [2020-10-13 08:29:32,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494f68376/5bc916d4ecbe47789e2afba9909677de/FLAG66b1cd140 [2020-10-13 08:29:32,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494f68376/5bc916d4ecbe47789e2afba9909677de [2020-10-13 08:29:32,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:29:32,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:29:32,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:29:32,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:29:32,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:29:32,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:32" (1/1) ... [2020-10-13 08:29:32,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:32, skipping insertion in model container [2020-10-13 08:29:32,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:32" (1/1) ... [2020-10-13 08:29:32,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:29:32,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:29:34,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:29:34,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:29:35,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:29:35,442 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:29:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35 WrapperNode [2020-10-13 08:29:35,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:29:35,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:29:35,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:29:35,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:29:35,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (1/1) ... [2020-10-13 08:29:35,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:29:35,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:29:35,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:29:35,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:29:35,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (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 [2020-10-13 08:29:35,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:29:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:29:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:29:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:29:35,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:29:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:29:35,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:29:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:29:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:29:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:29:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:29:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:29:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:29:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:29:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:29:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:29:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:29:47,203 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:29:47,203 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:29:47,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:47 BoogieIcfgContainer [2020-10-13 08:29:47,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:29:47,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:29:47,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:29:47,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:29:47,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:29:32" (1/3) ... [2020-10-13 08:29:47,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d569067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:47, skipping insertion in model container [2020-10-13 08:29:47,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:35" (2/3) ... [2020-10-13 08:29:47,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d569067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:47, skipping insertion in model container [2020-10-13 08:29:47,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:47" (3/3) ... [2020-10-13 08:29:47,228 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label04.c [2020-10-13 08:29:47,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:29:47,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:29:47,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:29:47,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:29:47,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:29:47,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:29:47,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:29:47,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:29:47,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:29:47,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:29:47,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:29:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:29:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 08:29:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:47,342 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] [2020-10-13 08:29:47,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1356842343, now seen corresponding path program 1 times [2020-10-13 08:29:47,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:47,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724953830] [2020-10-13 08:29:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 08:29:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-13 08:29:47,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:29:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:29:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:29:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:29:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:29:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:29:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:29:48,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724953830] [2020-10-13 08:29:48,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:29:48,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:29:48,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563874757] [2020-10-13 08:29:48,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:29:48,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:29:48,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:29:48,134 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:30:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:03,870 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2020-10-13 08:30:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:03,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 08:30:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:03,910 INFO L225 Difference]: With dead ends: 3165 [2020-10-13 08:30:03,911 INFO L226 Difference]: Without dead ends: 1961 [2020-10-13 08:30:03,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-10-13 08:30:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2020-10-13 08:30:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-13 08:30:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2020-10-13 08:30:04,102 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 22 [2020-10-13 08:30:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:04,103 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2020-10-13 08:30:04,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:30:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2020-10-13 08:30:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 08:30:04,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:04,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:04,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:30:04,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash -242610609, now seen corresponding path program 1 times [2020-10-13 08:30:04,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:04,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163434841] [2020-10-13 08:30:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:30:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:30:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-13 08:30:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:30:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:30:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:30:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:05,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:30:05,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:05,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:30:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:05,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:05,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:30:05,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:30:05,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:30:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:30:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:05,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163434841] [2020-10-13 08:30:05,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:05,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:05,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090883016] [2020-10-13 08:30:05,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:05,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:05,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:05,851 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand 5 states. [2020-10-13 08:30:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:20,910 INFO L93 Difference]: Finished difference Result 3910 states and 6727 transitions. [2020-10-13 08:30:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:20,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 08:30:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:20,929 INFO L225 Difference]: With dead ends: 3910 [2020-10-13 08:30:20,930 INFO L226 Difference]: Without dead ends: 1956 [2020-10-13 08:30:20,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2020-10-13 08:30:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1943. [2020-10-13 08:30:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-10-13 08:30:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3344 transitions. [2020-10-13 08:30:20,998 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3344 transitions. Word has length 91 [2020-10-13 08:30:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:20,998 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 3344 transitions. [2020-10-13 08:30:20,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3344 transitions. [2020-10-13 08:30:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 08:30:21,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:21,001 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:30:21,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:30:21,002 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:21,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1069303202, now seen corresponding path program 1 times [2020-10-13 08:30:21,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:21,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980650269] [2020-10-13 08:30:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:22,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:22,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:30:22,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:22,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-13 08:30:22,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:30:22,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:30:22,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:22,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:22,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:30:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:22,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:30:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:22,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:22,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:30:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:30:22,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:22,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:30:22,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:22,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980650269] [2020-10-13 08:30:22,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:22,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:22,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821810228] [2020-10-13 08:30:22,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:22,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:22,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:22,408 INFO L87 Difference]: Start difference. First operand 1943 states and 3344 transitions. Second operand 5 states. [2020-10-13 08:30:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:40,622 INFO L93 Difference]: Finished difference Result 5676 states and 9886 transitions. [2020-10-13 08:30:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:40,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-13 08:30:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:40,649 INFO L225 Difference]: With dead ends: 5676 [2020-10-13 08:30:40,650 INFO L226 Difference]: Without dead ends: 3739 [2020-10-13 08:30:40,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-10-13 08:30:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3721. [2020-10-13 08:30:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3721 states. [2020-10-13 08:30:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5912 transitions. [2020-10-13 08:30:40,784 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5912 transitions. Word has length 92 [2020-10-13 08:30:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:40,784 INFO L479 AbstractCegarLoop]: Abstraction has 3721 states and 5912 transitions. [2020-10-13 08:30:40,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5912 transitions. [2020-10-13 08:30:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 08:30:40,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:40,794 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:30:40,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:30:40,794 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:40,795 INFO L82 PathProgramCache]: Analyzing trace with hash 589634435, now seen corresponding path program 1 times [2020-10-13 08:30:40,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:40,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558224676] [2020-10-13 08:30:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 08:30:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-13 08:30:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:30:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:30:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:41,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:41,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:41,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:41,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:41,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:30:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:30:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:30:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:41,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558224676] [2020-10-13 08:30:41,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:41,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:41,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128642745] [2020-10-13 08:30:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:41,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:41,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:41,927 INFO L87 Difference]: Start difference. First operand 3721 states and 5912 transitions. Second operand 5 states. [2020-10-13 08:31:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:02,494 INFO L93 Difference]: Finished difference Result 9105 states and 14708 transitions. [2020-10-13 08:31:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:02,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 08:31:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:02,524 INFO L225 Difference]: With dead ends: 9105 [2020-10-13 08:31:02,524 INFO L226 Difference]: Without dead ends: 5390 [2020-10-13 08:31:02,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2020-10-13 08:31:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5377. [2020-10-13 08:31:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5377 states. [2020-10-13 08:31:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 8488 transitions. [2020-10-13 08:31:02,691 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 8488 transitions. Word has length 97 [2020-10-13 08:31:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:02,692 INFO L479 AbstractCegarLoop]: Abstraction has 5377 states and 8488 transitions. [2020-10-13 08:31:02,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 8488 transitions. [2020-10-13 08:31:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:31:02,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:02,694 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:31:02,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:31:02,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:02,695 INFO L82 PathProgramCache]: Analyzing trace with hash 15598625, now seen corresponding path program 1 times [2020-10-13 08:31:02,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:02,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992248012] [2020-10-13 08:31:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:03,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:03,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:31:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-13 08:31:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 08:31:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:31:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:03,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:03,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:03,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:03,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:31:03,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:03,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:03,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:31:03,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:31:03,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:31:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:03,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992248012] [2020-10-13 08:31:03,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:03,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:31:03,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172477085] [2020-10-13 08:31:03,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:03,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:03,931 INFO L87 Difference]: Start difference. First operand 5377 states and 8488 transitions. Second operand 5 states. [2020-10-13 08:31:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:29,768 INFO L93 Difference]: Finished difference Result 15678 states and 25214 transitions. [2020-10-13 08:31:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:29,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:31:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:29,813 INFO L225 Difference]: With dead ends: 15678 [2020-10-13 08:31:29,813 INFO L226 Difference]: Without dead ends: 10307 [2020-10-13 08:31:29,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2020-10-13 08:31:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 10288. [2020-10-13 08:31:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10288 states. [2020-10-13 08:31:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10288 states to 10288 states and 14913 transitions. [2020-10-13 08:31:30,128 INFO L78 Accepts]: Start accepts. Automaton has 10288 states and 14913 transitions. Word has length 104 [2020-10-13 08:31:30,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:30,130 INFO L479 AbstractCegarLoop]: Abstraction has 10288 states and 14913 transitions. [2020-10-13 08:31:30,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 10288 states and 14913 transitions. [2020-10-13 08:31:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 08:31:30,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:30,134 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:31:30,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:31:30,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:30,135 INFO L82 PathProgramCache]: Analyzing trace with hash -502304753, now seen corresponding path program 1 times [2020-10-13 08:31:30,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:30,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491102625] [2020-10-13 08:31:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:30,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:30,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:31,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:31,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:31:31,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-13 08:31:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:31:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:31:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:31,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:31,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:31,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:31,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:31,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:31:31,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:31,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:31:31,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:31:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:31,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491102625] [2020-10-13 08:31:31,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:31,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:31:31,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367080906] [2020-10-13 08:31:31,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:31,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:31,304 INFO L87 Difference]: Start difference. First operand 10288 states and 14913 transitions. Second operand 5 states. [2020-10-13 08:32:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:02,463 INFO L93 Difference]: Finished difference Result 24674 states and 37082 transitions. [2020-10-13 08:32:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:02,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 08:32:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:02,528 INFO L225 Difference]: With dead ends: 24674 [2020-10-13 08:32:02,529 INFO L226 Difference]: Without dead ends: 14392 [2020-10-13 08:32:02,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14392 states. [2020-10-13 08:32:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14392 to 14363. [2020-10-13 08:32:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14363 states. [2020-10-13 08:32:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14363 states to 14363 states and 19990 transitions. [2020-10-13 08:32:02,965 INFO L78 Accepts]: Start accepts. Automaton has 14363 states and 19990 transitions. Word has length 123 [2020-10-13 08:32:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:02,966 INFO L479 AbstractCegarLoop]: Abstraction has 14363 states and 19990 transitions. [2020-10-13 08:32:02,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14363 states and 19990 transitions. [2020-10-13 08:32:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 08:32:02,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:02,982 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:32:02,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:32:02,983 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -503063568, now seen corresponding path program 1 times [2020-10-13 08:32:02,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:02,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575064676] [2020-10-13 08:32:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:05,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 08:32:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:32:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2275 [2020-10-13 08:32:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 08:32:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:32:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:05,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:05,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:32:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:05,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:32:05,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 08:32:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:32:05,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:05,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575064676] [2020-10-13 08:32:05,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:05,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:05,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119029464] [2020-10-13 08:32:05,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:05,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:05,999 INFO L87 Difference]: Start difference. First operand 14363 states and 19990 transitions. Second operand 5 states. [2020-10-13 08:32:40,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:40,999 INFO L93 Difference]: Finished difference Result 33619 states and 48648 transitions. [2020-10-13 08:32:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:41,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-13 08:32:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:41,103 INFO L225 Difference]: With dead ends: 33619 [2020-10-13 08:32:41,103 INFO L226 Difference]: Without dead ends: 19262 [2020-10-13 08:32:41,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:32:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19262 states. [2020-10-13 08:32:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19262 to 19232. [2020-10-13 08:32:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19232 states. [2020-10-13 08:32:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19232 states to 19232 states and 26145 transitions. [2020-10-13 08:32:41,752 INFO L78 Accepts]: Start accepts. Automaton has 19232 states and 26145 transitions. Word has length 201 [2020-10-13 08:32:41,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:41,754 INFO L479 AbstractCegarLoop]: Abstraction has 19232 states and 26145 transitions. [2020-10-13 08:32:41,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 19232 states and 26145 transitions. [2020-10-13 08:32:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 08:32:41,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:41,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:41,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:32:41,766 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:41,767 INFO L82 PathProgramCache]: Analyzing trace with hash 477015443, now seen corresponding path program 1 times [2020-10-13 08:32:41,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:41,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883184690] [2020-10-13 08:32:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:42,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:43,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 08:32:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:32:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2180 [2020-10-13 08:32:44,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:32:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:44,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:32:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:44,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:44,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:32:44,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:32:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:32:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:44,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:44,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:32:44,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:44,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:32:44,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:44,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:32:44,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:32:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:32:44,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883184690] [2020-10-13 08:32:44,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:32:44,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:32:44,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201839714] [2020-10-13 08:32:44,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:44,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:44,542 INFO L87 Difference]: Start difference. First operand 19232 states and 26145 transitions. Second operand 5 states. [2020-10-13 08:33:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:02,372 INFO L93 Difference]: Finished difference Result 38446 states and 52393 transitions. [2020-10-13 08:33:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:02,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 08:33:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:02,460 INFO L225 Difference]: With dead ends: 38446 [2020-10-13 08:33:02,460 INFO L226 Difference]: Without dead ends: 19220 [2020-10-13 08:33:02,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19220 states. [2020-10-13 08:33:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19220 to 19215. [2020-10-13 08:33:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19215 states. [2020-10-13 08:33:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19215 states to 19215 states and 26111 transitions. [2020-10-13 08:33:02,923 INFO L78 Accepts]: Start accepts. Automaton has 19215 states and 26111 transitions. Word has length 241 [2020-10-13 08:33:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:02,924 INFO L479 AbstractCegarLoop]: Abstraction has 19215 states and 26111 transitions. [2020-10-13 08:33:02,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 19215 states and 26111 transitions. [2020-10-13 08:33:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 08:33:02,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:02,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:02,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:33:02,931 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1159995766, now seen corresponding path program 1 times [2020-10-13 08:33:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:02,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198348679] [2020-10-13 08:33:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 08:33:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:33:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-10-13 08:33:05,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-13 08:33:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 08:33:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:33:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:33:05,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:33:05,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:05,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:33:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:33:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:33:05,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:05,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:33:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 08:33:05,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198348679] [2020-10-13 08:33:05,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:05,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:05,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455130585] [2020-10-13 08:33:05,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:05,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:05,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:05,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:05,508 INFO L87 Difference]: Start difference. First operand 19215 states and 26111 transitions. Second operand 5 states. [2020-10-13 08:33:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:30,341 INFO L93 Difference]: Finished difference Result 44939 states and 62358 transitions. [2020-10-13 08:33:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:30,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-13 08:33:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:30,437 INFO L225 Difference]: With dead ends: 44939 [2020-10-13 08:33:30,437 INFO L226 Difference]: Without dead ends: 25730 [2020-10-13 08:33:30,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25730 states. [2020-10-13 08:33:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25730 to 25723. [2020-10-13 08:33:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25723 states. [2020-10-13 08:33:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25723 states to 25723 states and 35415 transitions. [2020-10-13 08:33:31,310 INFO L78 Accepts]: Start accepts. Automaton has 25723 states and 35415 transitions. Word has length 251 [2020-10-13 08:33:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:31,310 INFO L479 AbstractCegarLoop]: Abstraction has 25723 states and 35415 transitions. [2020-10-13 08:33:31,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 25723 states and 35415 transitions. [2020-10-13 08:33:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 08:33:31,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:31,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:31,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:33:31,326 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:31,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1136533531, now seen corresponding path program 1 times [2020-10-13 08:33:31,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:31,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336216571] [2020-10-13 08:33:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking...