/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:26:29,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:26:29,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:26:29,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:26:29,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:26:29,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:26:29,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:26:29,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:26:29,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:26:29,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:26:29,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:26:29,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:26:29,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:26:29,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:26:29,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:26:29,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:26:29,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:26:29,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:26:29,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:26:29,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:26:29,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:26:29,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:26:29,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:26:29,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:26:29,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:26:29,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:26:29,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:26:29,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:26:29,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:26:29,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:26:29,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:26:29,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:26:29,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:26:29,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:26:29,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:26:29,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:26:29,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:26:29,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:26:29,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:26:29,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:26:29,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:26:29,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:26:29,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:26:29,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:26:29,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:26:29,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:26:29,507 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:26:29,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:26:29,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:26:29,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:26:29,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:26:29,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:26:29,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:26:29,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:26:29,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:26:29,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:26:29,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:26:29,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:26:29,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:26:29,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:26:29,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:26:29,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:26:29,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:26:29,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:26:29,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:26:29,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:26:29,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:26:29,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:26:29,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:26:29,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:26:29,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:26:29,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:26:29,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:26:29,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:26:29,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:26:29,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:26:29,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:26:29,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2020-10-14 04:26:29,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db36daf5/64cd74c1edc64ae099a4b2f7145b8daf/FLAGfd2728f39 [2020-10-14 04:26:30,891 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:26:30,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label07.c [2020-10-14 04:26:30,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db36daf5/64cd74c1edc64ae099a4b2f7145b8daf/FLAGfd2728f39 [2020-10-14 04:26:31,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db36daf5/64cd74c1edc64ae099a4b2f7145b8daf [2020-10-14 04:26:31,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:26:31,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:26:31,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:26:31,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:26:31,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:26:31,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:31" (1/1) ... [2020-10-14 04:26:31,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:31, skipping insertion in model container [2020-10-14 04:26:31,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:26:31" (1/1) ... [2020-10-14 04:26:31,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:26:31,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:26:34,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:26:34,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:26:35,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:26:35,221 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:26:35,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35 WrapperNode [2020-10-14 04:26:35,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:26:35,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:26:35,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:26:35,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:26:35,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... [2020-10-14 04:26:35,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:26:35,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:26:35,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:26:35,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:26:35,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:26:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:26:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:26:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:26:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:26:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:26:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:26:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:26:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:26:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:26:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:26:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:26:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:26:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:26:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:26:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:26:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:26:49,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:26:49,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:26:49,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:26:49 BoogieIcfgContainer [2020-10-14 04:26:49,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:26:49,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:26:49,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:26:49,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:26:49,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:26:31" (1/3) ... [2020-10-14 04:26:49,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f3bcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:26:49, skipping insertion in model container [2020-10-14 04:26:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:26:35" (2/3) ... [2020-10-14 04:26:49,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f3bcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:26:49, skipping insertion in model container [2020-10-14 04:26:49,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:26:49" (3/3) ... [2020-10-14 04:26:49,166 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label07.c [2020-10-14 04:26:49,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:26:49,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:26:49,208 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:26:49,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:26:49,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:26:49,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:26:49,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:26:49,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:26:49,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:26:49,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:26:49,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:26:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:26:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 04:26:49,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:26:49,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:26:49,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:26:49,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:26:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash -62108620, now seen corresponding path program 1 times [2020-10-14 04:26:49,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:26:49,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395976097] [2020-10-14 04:26:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:26:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:50,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:50,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:26:50,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-14 04:26:50,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:50,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:26:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:26:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:26:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:26:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:26:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:26:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:26:50,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:26:50,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:26:50,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:26:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:26:50,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:26:50,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:26:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:26:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:26:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:26:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:26:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:26:50,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395976097] [2020-10-14 04:26:50,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:26:50,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:26:50,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384395] [2020-10-14 04:26:50,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:26:50,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:26:50,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:26:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:26:50,419 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:27:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:16,909 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 04:27:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:27:16,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 04:27:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:16,971 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 04:27:16,971 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 04:27:16,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:27:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 04:27:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 04:27:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 04:27:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 04:27:17,265 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 67 [2020-10-14 04:27:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:17,268 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 04:27:17,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:27:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 04:27:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 04:27:17,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:17,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:27:17,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:27:17,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 921515016, now seen corresponding path program 1 times [2020-10-14 04:27:17,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:17,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307781019] [2020-10-14 04:27:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:19,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:19,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:27:19,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:27:19,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-14 04:27:19,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:19,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:27:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:27:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:27:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:19,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:19,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:19,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:27:19,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:19,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:19,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:27:19,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:27:19,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:19,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:19,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:27:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:19,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307781019] [2020-10-14 04:27:19,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:27:19,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:27:19,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098443691] [2020-10-14 04:27:19,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:27:19,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:19,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:27:19,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:27:19,486 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 5 states. [2020-10-14 04:27:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:27:52,773 INFO L93 Difference]: Finished difference Result 9241 states and 16045 transitions. [2020-10-14 04:27:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:27:52,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 04:27:52,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:27:52,812 INFO L225 Difference]: With dead ends: 9241 [2020-10-14 04:27:52,813 INFO L226 Difference]: Without dead ends: 6048 [2020-10-14 04:27:52,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:27:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2020-10-14 04:27:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 6039. [2020-10-14 04:27:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6039 states. [2020-10-14 04:27:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6039 states to 6039 states and 10109 transitions. [2020-10-14 04:27:53,035 INFO L78 Accepts]: Start accepts. Automaton has 6039 states and 10109 transitions. Word has length 139 [2020-10-14 04:27:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:27:53,039 INFO L479 AbstractCegarLoop]: Abstraction has 6039 states and 10109 transitions. [2020-10-14 04:27:53,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:27:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6039 states and 10109 transitions. [2020-10-14 04:27:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 04:27:53,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:27:53,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:27:53,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:27:53,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:27:53,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:27:53,051 INFO L82 PathProgramCache]: Analyzing trace with hash -607340246, now seen corresponding path program 1 times [2020-10-14 04:27:53,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:27:53,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358551991] [2020-10-14 04:27:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:27:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:53,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:54,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 04:27:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:27:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-14 04:27:54,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:54,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:27:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:27:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:27:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:27:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:54,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:27:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:27:54,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:54,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:27:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:27:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:27:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:27:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:27:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:27:54,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:27:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:27:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:27:54,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:27:54,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:27:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:27:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:27:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:27:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:27:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:27:55,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358551991] [2020-10-14 04:27:55,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:27:55,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:27:55,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745237546] [2020-10-14 04:27:55,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:27:55,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:27:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:27:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:27:55,040 INFO L87 Difference]: Start difference. First operand 6039 states and 10109 transitions. Second operand 5 states. [2020-10-14 04:28:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:28:46,185 INFO L93 Difference]: Finished difference Result 14962 states and 25693 transitions. [2020-10-14 04:28:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:28:46,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-14 04:28:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:28:46,255 INFO L225 Difference]: With dead ends: 14962 [2020-10-14 04:28:46,255 INFO L226 Difference]: Without dead ends: 8929 [2020-10-14 04:28:46,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:28:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2020-10-14 04:28:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 8880. [2020-10-14 04:28:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8880 states. [2020-10-14 04:28:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 13984 transitions. [2020-10-14 04:28:46,635 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 13984 transitions. Word has length 148 [2020-10-14 04:28:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:28:46,635 INFO L479 AbstractCegarLoop]: Abstraction has 8880 states and 13984 transitions. [2020-10-14 04:28:46,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:28:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 13984 transitions. [2020-10-14 04:28:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 04:28:46,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:28:46,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:28:46,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:28:46,647 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:28:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:28:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1023595776, now seen corresponding path program 1 times [2020-10-14 04:28:46,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:28:46,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634024614] [2020-10-14 04:28:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:28:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 04:28:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:28:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-10-14 04:28:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:48,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:28:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:28:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:28:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:28:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:49,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:49,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:28:49,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:49,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:28:49,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:49,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:49,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:28:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:28:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:28:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:28:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:28:49,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:28:49,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:28:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:28:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 04:28:49,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:28:49,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:28:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:28:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:28:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:28:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:28:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:28:49,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634024614] [2020-10-14 04:28:49,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:28:49,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:28:49,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224579264] [2020-10-14 04:28:49,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:28:49,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:28:49,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:28:49,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:28:49,478 INFO L87 Difference]: Start difference. First operand 8880 states and 13984 transitions. Second operand 5 states. [2020-10-14 04:29:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:29:45,152 INFO L93 Difference]: Finished difference Result 20639 states and 33519 transitions. [2020-10-14 04:29:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:29:45,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 04:29:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:29:45,221 INFO L225 Difference]: With dead ends: 20639 [2020-10-14 04:29:45,224 INFO L226 Difference]: Without dead ends: 11765 [2020-10-14 04:29:45,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:29:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2020-10-14 04:29:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 11700. [2020-10-14 04:29:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11700 states. [2020-10-14 04:29:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11700 states to 11700 states and 18938 transitions. [2020-10-14 04:29:45,632 INFO L78 Accepts]: Start accepts. Automaton has 11700 states and 18938 transitions. Word has length 168 [2020-10-14 04:29:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:29:45,633 INFO L479 AbstractCegarLoop]: Abstraction has 11700 states and 18938 transitions. [2020-10-14 04:29:45,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:29:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11700 states and 18938 transitions. [2020-10-14 04:29:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 04:29:45,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:29:45,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:29:45,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:29:45,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:29:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:29:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1387989390, now seen corresponding path program 1 times [2020-10-14 04:29:45,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:29:45,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584494542] [2020-10-14 04:29:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:29:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:50,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:50,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 04:29:50,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:29:50,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4880 [2020-10-14 04:29:50,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:50,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:50,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:29:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 04:29:50,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:29:50,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:29:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:50,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:50,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:29:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:29:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:50,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:29:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:29:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:29:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:50,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:50,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:29:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:29:50,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:50,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:29:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:29:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:29:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:51,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:29:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:29:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:51,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:29:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:29:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:29:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:29:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:29:51,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584494542] [2020-10-14 04:29:51,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:29:51,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:29:51,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623016598] [2020-10-14 04:29:51,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:29:51,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:29:51,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:29:51,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:29:51,223 INFO L87 Difference]: Start difference. First operand 11700 states and 18938 transitions. Second operand 7 states.