/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:14:17,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:14:17,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:14:17,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:14:17,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:14:17,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:14:17,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:14:17,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:14:17,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:14:17,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:14:17,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:14:17,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:14:17,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:14:17,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:14:17,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:14:17,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:14:17,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:14:17,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:14:17,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:14:17,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:14:17,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:14:17,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:14:17,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:14:17,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:14:17,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:14:17,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:14:17,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:14:17,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:14:17,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:14:17,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:14:17,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:14:17,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:14:17,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:14:17,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:14:17,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:14:17,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:14:17,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:14:17,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:14:17,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:14:17,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:14:17,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:14:17,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:14:17,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:14:17,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:14:17,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:14:17,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:14:17,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:14:17,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:14:17,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:14:17,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:14:17,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:14:17,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:14:17,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:14:17,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:14:17,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:14:17,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:14:17,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:14:17,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:14:17,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:14:17,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:14:17,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:14:17,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:14:17,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:14:17,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:14:17,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:14:17,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:14:17,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:14:17,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:14:17,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:14:17,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:14:17,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:14:17,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:14:17,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:14:17,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:14:17,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:14:17,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:14:17,605 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:14:17,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-14 21:14:17,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa34d60f0/608c55c3a6624679a94665f307b2db23/FLAG8f3db00d2 [2020-10-14 21:14:18,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:14:18,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label34.c [2020-10-14 21:14:18,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa34d60f0/608c55c3a6624679a94665f307b2db23/FLAG8f3db00d2 [2020-10-14 21:14:18,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa34d60f0/608c55c3a6624679a94665f307b2db23 [2020-10-14 21:14:19,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:14:19,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:14:19,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:19,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:14:19,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:14:19,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:18" (1/1) ... [2020-10-14 21:14:19,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:19, skipping insertion in model container [2020-10-14 21:14:19,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:18" (1/1) ... [2020-10-14 21:14:19,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:14:19,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:14:20,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:20,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:14:21,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:14:21,498 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:14:21,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21 WrapperNode [2020-10-14 21:14:21,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:14:21,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:14:21,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:14:21,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:14:21,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... [2020-10-14 21:14:21,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:14:21,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:14:21,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:14:21,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:14:21,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:14:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:14:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:14:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:14:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:14:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:14:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:14:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:14:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:14:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:14:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:14:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:14:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:14:26,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:14:26,833 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:14:26,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:26 BoogieIcfgContainer [2020-10-14 21:14:26,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:14:26,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:14:26,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:14:26,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:14:26,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:18" (1/3) ... [2020-10-14 21:14:26,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:26, skipping insertion in model container [2020-10-14 21:14:26,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:21" (2/3) ... [2020-10-14 21:14:26,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2fee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:26, skipping insertion in model container [2020-10-14 21:14:26,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:26" (3/3) ... [2020-10-14 21:14:26,872 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label34.c [2020-10-14 21:14:26,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:14:26,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:14:26,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:14:26,960 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:14:26,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:14:26,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:14:26,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:14:26,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:14:26,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:14:26,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:14:26,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:14:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:14:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 21:14:27,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:27,012 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] [2020-10-14 21:14:27,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash 522040021, now seen corresponding path program 1 times [2020-10-14 21:14:27,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:27,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066400392] [2020-10-14 21:14:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 21:14:27,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-14 21:14:27,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:27,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 21:14:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:14:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:14:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:27,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:14:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:27,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066400392] [2020-10-14 21:14:27,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:27,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:14:27,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757348828] [2020-10-14 21:14:27,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:14:27,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:27,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:14:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:14:27,746 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:14:36,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:36,143 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:14:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:14:36,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 21:14:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:36,179 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:14:36,179 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:14:36,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:14:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:14:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:14:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 21:14:36,349 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 22 [2020-10-14 21:14:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:36,349 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 21:14:36,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:14:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 21:14:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 21:14:36,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:36,355 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] [2020-10-14 21:14:36,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:14:36,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2030687649, now seen corresponding path program 1 times [2020-10-14 21:14:36,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:36,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806049384] [2020-10-14 21:14:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 21:14:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-14 21:14:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:14:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:14:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:14:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:14:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:37,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:14:37,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 21:14:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:37,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:14:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:14:37,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806049384] [2020-10-14 21:14:37,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:14:37,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:14:37,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334712130] [2020-10-14 21:14:37,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:14:37,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:37,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:14:37,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:14:37,736 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 7 states. [2020-10-14 21:14:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:47,832 INFO L93 Difference]: Finished difference Result 4738 states and 8693 transitions. [2020-10-14 21:14:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:14:47,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-14 21:14:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:47,856 INFO L225 Difference]: With dead ends: 4738 [2020-10-14 21:14:47,856 INFO L226 Difference]: Without dead ends: 3191 [2020-10-14 21:14:47,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:14:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-10-14 21:14:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3136. [2020-10-14 21:14:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-10-14 21:14:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4988 transitions. [2020-10-14 21:14:48,013 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4988 transitions. Word has length 95 [2020-10-14 21:14:48,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:48,014 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 4988 transitions. [2020-10-14 21:14:48,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:14:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4988 transitions. [2020-10-14 21:14:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 21:14:48,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:48,024 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] [2020-10-14 21:14:48,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:14:48,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -635841667, now seen corresponding path program 1 times [2020-10-14 21:14:48,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:48,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955707390] [2020-10-14 21:14:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 21:14:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:14:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-14 21:14:48,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:48,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:14:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:14:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:14:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:14:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:48,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:48,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:14:48,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 21:14:48,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:48,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:14:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:14:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:14:48,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:14:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:48,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:14:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:14:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:14:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:14:48,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:14:48,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:14:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:14:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:14:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:14:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:14:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:14:49,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955707390] [2020-10-14 21:14:49,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:14:49,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:14:49,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549877408] [2020-10-14 21:14:49,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:14:49,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:14:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:14:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:14:49,007 INFO L87 Difference]: Start difference. First operand 3136 states and 4988 transitions. Second operand 6 states. [2020-10-14 21:14:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:14:59,177 INFO L93 Difference]: Finished difference Result 9569 states and 15593 transitions. [2020-10-14 21:14:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:14:59,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 21:14:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:14:59,225 INFO L225 Difference]: With dead ends: 9569 [2020-10-14 21:14:59,225 INFO L226 Difference]: Without dead ends: 6439 [2020-10-14 21:14:59,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:14:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2020-10-14 21:14:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 6394. [2020-10-14 21:14:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-10-14 21:14:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 9126 transitions. [2020-10-14 21:14:59,428 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 9126 transitions. Word has length 97 [2020-10-14 21:14:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:14:59,432 INFO L479 AbstractCegarLoop]: Abstraction has 6394 states and 9126 transitions. [2020-10-14 21:14:59,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:14:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 9126 transitions. [2020-10-14 21:14:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 21:14:59,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:14:59,436 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] [2020-10-14 21:14:59,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:14:59,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:14:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:14:59,439 INFO L82 PathProgramCache]: Analyzing trace with hash -725028663, now seen corresponding path program 1 times [2020-10-14 21:14:59,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:14:59,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933556492] [2020-10-14 21:14:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:14:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:14:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:14:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 21:15:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 21:15:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:00,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:00,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:15:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:00,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:00,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:00,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:00,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:15:00,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:00,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:00,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:00,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:15:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 21:15:00,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:00,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:15:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:00,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933556492] [2020-10-14 21:15:00,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:00,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:00,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634966851] [2020-10-14 21:15:00,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:00,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:00,539 INFO L87 Difference]: Start difference. First operand 6394 states and 9126 transitions. Second operand 7 states. [2020-10-14 21:15:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:13,934 INFO L93 Difference]: Finished difference Result 19520 states and 28614 transitions. [2020-10-14 21:15:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:15:13,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-14 21:15:13,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:13,994 INFO L225 Difference]: With dead ends: 19520 [2020-10-14 21:15:13,995 INFO L226 Difference]: Without dead ends: 13132 [2020-10-14 21:15:14,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:15:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13132 states. [2020-10-14 21:15:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13132 to 12109. [2020-10-14 21:15:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12109 states. [2020-10-14 21:15:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12109 states to 12109 states and 16688 transitions. [2020-10-14 21:15:14,382 INFO L78 Accepts]: Start accepts. Automaton has 12109 states and 16688 transitions. Word has length 107 [2020-10-14 21:15:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:14,384 INFO L479 AbstractCegarLoop]: Abstraction has 12109 states and 16688 transitions. [2020-10-14 21:15:14,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 12109 states and 16688 transitions. [2020-10-14 21:15:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:15:14,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:14,388 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] [2020-10-14 21:15:14,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:15:14,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash -894642912, now seen corresponding path program 1 times [2020-10-14 21:15:14,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:14,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620361046] [2020-10-14 21:15:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:14,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:15:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-14 21:15:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:15,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:15:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:15,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:15,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:15:15,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:15,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:15:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 21:15:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:15,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:15:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:15:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:16,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620361046] [2020-10-14 21:15:16,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:16,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:15:16,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702948981] [2020-10-14 21:15:16,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:16,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:16,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:16,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:16,168 INFO L87 Difference]: Start difference. First operand 12109 states and 16688 transitions. Second operand 7 states. [2020-10-14 21:15:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:29,202 INFO L93 Difference]: Finished difference Result 31022 states and 43486 transitions. [2020-10-14 21:15:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:15:29,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:15:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:29,280 INFO L225 Difference]: With dead ends: 31022 [2020-10-14 21:15:29,281 INFO L226 Difference]: Without dead ends: 18919 [2020-10-14 21:15:29,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:15:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18919 states. [2020-10-14 21:15:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18919 to 16407. [2020-10-14 21:15:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16407 states. [2020-10-14 21:15:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16407 states to 16407 states and 21935 transitions. [2020-10-14 21:15:29,733 INFO L78 Accepts]: Start accepts. Automaton has 16407 states and 21935 transitions. Word has length 130 [2020-10-14 21:15:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:29,734 INFO L479 AbstractCegarLoop]: Abstraction has 16407 states and 21935 transitions. [2020-10-14 21:15:29,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16407 states and 21935 transitions. [2020-10-14 21:15:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 21:15:29,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:29,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:29,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:15:29,740 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1392466376, now seen corresponding path program 1 times [2020-10-14 21:15:29,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:29,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493952423] [2020-10-14 21:15:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 21:15:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:15:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-14 21:15:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:31,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:15:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:15:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:31,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:31,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:31,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:31,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:31,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:31,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:31,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:31,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:15:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:31,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:15:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:15:32,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:15:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:32,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:15:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:15:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:15:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:15:32,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493952423] [2020-10-14 21:15:32,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:32,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:15:32,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144491870] [2020-10-14 21:15:32,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:15:32,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:32,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:15:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:15:32,151 INFO L87 Difference]: Start difference. First operand 16407 states and 21935 transitions. Second operand 7 states. [2020-10-14 21:15:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:46,817 INFO L93 Difference]: Finished difference Result 34811 states and 46497 transitions. [2020-10-14 21:15:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:15:46,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 21:15:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:46,885 INFO L225 Difference]: With dead ends: 34811 [2020-10-14 21:15:46,885 INFO L226 Difference]: Without dead ends: 16789 [2020-10-14 21:15:46,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:15:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16789 states. [2020-10-14 21:15:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16789 to 15656. [2020-10-14 21:15:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15656 states. [2020-10-14 21:15:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15656 states to 15656 states and 18688 transitions. [2020-10-14 21:15:47,256 INFO L78 Accepts]: Start accepts. Automaton has 15656 states and 18688 transitions. Word has length 205 [2020-10-14 21:15:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:47,257 INFO L479 AbstractCegarLoop]: Abstraction has 15656 states and 18688 transitions. [2020-10-14 21:15:47,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:15:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 15656 states and 18688 transitions. [2020-10-14 21:15:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 21:15:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:47,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:47,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:15:47,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:47,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1655021633, now seen corresponding path program 1 times [2020-10-14 21:15:47,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:47,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673976174] [2020-10-14 21:15:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:47,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 21:15:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:15:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-14 21:15:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:15:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:15:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:15:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:15:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:15:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:15:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:15:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 21:15:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:15:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:15:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:15:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:15:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:15:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:15:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:15:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:15:49,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673976174] [2020-10-14 21:15:49,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:15:49,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:15:49,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228425702] [2020-10-14 21:15:49,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:15:49,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:49,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:15:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:15:49,548 INFO L87 Difference]: Start difference. First operand 15656 states and 18688 transitions. Second operand 6 states. [2020-10-14 21:16:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:11,828 INFO L93 Difference]: Finished difference Result 47320 states and 59686 transitions. [2020-10-14 21:16:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:16:11,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-14 21:16:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:11,900 INFO L225 Difference]: With dead ends: 47320 [2020-10-14 21:16:11,900 INFO L226 Difference]: Without dead ends: 30082 [2020-10-14 21:16:11,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2020-10-14 21:16:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 29177. [2020-10-14 21:16:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29177 states. [2020-10-14 21:16:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29177 states to 29177 states and 35250 transitions. [2020-10-14 21:16:12,447 INFO L78 Accepts]: Start accepts. Automaton has 29177 states and 35250 transitions. Word has length 242 [2020-10-14 21:16:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:12,448 INFO L479 AbstractCegarLoop]: Abstraction has 29177 states and 35250 transitions. [2020-10-14 21:16:12,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:16:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 29177 states and 35250 transitions. [2020-10-14 21:16:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 21:16:12,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:12,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:12,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:16:12,452 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2114423174, now seen corresponding path program 1 times [2020-10-14 21:16:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:12,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040628580] [2020-10-14 21:16:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 21:16:15,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2933 [2020-10-14 21:16:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:16:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:15,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:16:15,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:16:15,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 21:16:15,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:16:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:16:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:16,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:16:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:16:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:16,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:16:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:16:16,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040628580] [2020-10-14 21:16:16,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:16,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:16,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901270110] [2020-10-14 21:16:16,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:16,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:16,435 INFO L87 Difference]: Start difference. First operand 29177 states and 35250 transitions. Second operand 7 states. [2020-10-14 21:16:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:32,131 INFO L93 Difference]: Finished difference Result 59610 states and 72251 transitions. [2020-10-14 21:16:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:16:32,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-14 21:16:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:32,225 INFO L225 Difference]: With dead ends: 59610 [2020-10-14 21:16:32,226 INFO L226 Difference]: Without dead ends: 30439 [2020-10-14 21:16:32,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:16:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30439 states. [2020-10-14 21:16:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30439 to 30072. [2020-10-14 21:16:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30072 states. [2020-10-14 21:16:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30072 states to 30072 states and 36265 transitions. [2020-10-14 21:16:32,817 INFO L78 Accepts]: Start accepts. Automaton has 30072 states and 36265 transitions. Word has length 243 [2020-10-14 21:16:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:32,818 INFO L479 AbstractCegarLoop]: Abstraction has 30072 states and 36265 transitions. [2020-10-14 21:16:32,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30072 states and 36265 transitions. [2020-10-14 21:16:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 21:16:32,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:32,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:32,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:16:32,826 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash -864583191, now seen corresponding path program 1 times [2020-10-14 21:16:32,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:32,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307704526] [2020-10-14 21:16:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:36,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-14 21:16:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3228 [2020-10-14 21:16:36,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:36,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 21:16:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:16:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:36,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:16:36,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:36,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:36,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:16:36,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:16:36,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:36,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:16:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:36,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:16:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:16:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:16:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 21:16:36,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:36,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:16:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:16:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:36,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:16:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:16:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:16:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 21:16:36,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307704526] [2020-10-14 21:16:36,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:36,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:16:36,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317665430] [2020-10-14 21:16:36,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:36,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:36,794 INFO L87 Difference]: Start difference. First operand 30072 states and 36265 transitions. Second operand 7 states. [2020-10-14 21:16:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:55,864 INFO L93 Difference]: Finished difference Result 71471 states and 89895 transitions. [2020-10-14 21:16:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:16:55,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-14 21:16:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:55,999 INFO L225 Difference]: With dead ends: 71471 [2020-10-14 21:16:56,000 INFO L226 Difference]: Without dead ends: 42172 [2020-10-14 21:16:56,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42172 states. [2020-10-14 21:16:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42172 to 42011. [2020-10-14 21:16:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42011 states. [2020-10-14 21:16:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42011 states to 42011 states and 50518 transitions. [2020-10-14 21:16:56,798 INFO L78 Accepts]: Start accepts. Automaton has 42011 states and 50518 transitions. Word has length 333 [2020-10-14 21:16:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:56,798 INFO L479 AbstractCegarLoop]: Abstraction has 42011 states and 50518 transitions. [2020-10-14 21:16:56,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 42011 states and 50518 transitions. [2020-10-14 21:16:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-14 21:16:56,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:56,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:56,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:16:56,806 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 580324393, now seen corresponding path program 1 times [2020-10-14 21:16:56,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:56,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525872101] [2020-10-14 21:16:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:00,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-14 21:17:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3979 [2020-10-14 21:17:00,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:00,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:17:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:00,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:17:00,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:01,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:17:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:01,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:17:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:01,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:17:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-14 21:17:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:01,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:17:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:01,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:17:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:17:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:02,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:17:02,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:02,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 21:17:02,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:02,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:02,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:17:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 237 proven. 72 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:17:03,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525872101] [2020-10-14 21:17:03,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:03,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:17:03,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086269806] [2020-10-14 21:17:03,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:17:03,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:17:03,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:17:03,434 INFO L87 Difference]: Start difference. First operand 42011 states and 50518 transitions. Second operand 10 states. [2020-10-14 21:17:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:53,218 INFO L93 Difference]: Finished difference Result 119218 states and 162094 transitions. [2020-10-14 21:17:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 21:17:53,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 365 [2020-10-14 21:17:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:53,588 INFO L225 Difference]: With dead ends: 119218 [2020-10-14 21:17:53,588 INFO L226 Difference]: Without dead ends: 77980 [2020-10-14 21:17:53,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2020-10-14 21:17:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77980 states. [2020-10-14 21:17:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77980 to 72712. [2020-10-14 21:17:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72712 states. [2020-10-14 21:17:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72712 states to 72712 states and 94357 transitions. [2020-10-14 21:17:57,702 INFO L78 Accepts]: Start accepts. Automaton has 72712 states and 94357 transitions. Word has length 365 [2020-10-14 21:17:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:57,703 INFO L479 AbstractCegarLoop]: Abstraction has 72712 states and 94357 transitions. [2020-10-14 21:17:57,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 21:17:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 72712 states and 94357 transitions. [2020-10-14 21:17:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 21:17:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:57,708 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:17:57,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:17:57,708 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash -929087216, now seen corresponding path program 1 times [2020-10-14 21:17:57,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:57,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970912528] [2020-10-14 21:17:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:00,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:00,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 21:18:00,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:18:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2473 [2020-10-14 21:18:00,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:00,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 21:18:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:18:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:18:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:00,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:00,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:00,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:18:00,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:18:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:00,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:18:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:00,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:18:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 21:18:00,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:00,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:18:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:18:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:18:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:18:00,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:00,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:18:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 21:18:01,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970912528] [2020-10-14 21:18:01,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:01,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:18:01,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027659419] [2020-10-14 21:18:01,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:01,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:01,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:01,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:01,306 INFO L87 Difference]: Start difference. First operand 72712 states and 94357 transitions. Second operand 7 states.