/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:32:04,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:32:04,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:32:04,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:32:04,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:32:04,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:32:04,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:32:04,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:32:04,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:32:04,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:32:04,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:32:04,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:32:04,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:32:04,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:32:04,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:32:04,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:32:04,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:32:04,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:32:04,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:32:04,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:32:04,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:32:04,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:32:04,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:32:04,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:32:04,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:32:04,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:32:04,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:32:04,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:32:04,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:32:04,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:32:04,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:32:04,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:32:04,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:32:04,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:32:04,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:32:04,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:32:04,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:32:04,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:32:04,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:32:04,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:32:04,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:32:04,478 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 04:32:04,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:32:04,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:32:04,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:32:04,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:32:04,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:32:04,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:32:04,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:32:04,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:32:04,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:32:04,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:32:04,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:32:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:32:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:32:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:32:04,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:32:04,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:32:04,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:32:04,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:32:04,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:32:04,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:32:04,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:32:04,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:32:04,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:32:04,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:32:04,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:32:04,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:32:04,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:32:04,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:32:04,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:32:04,520 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 04:32:04,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:32:04,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:32:04,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:32:04,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:32:04,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:32:04,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26.c [2020-10-14 04:32:04,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf646e9ab/02802240e89f42a4af485004dfba6477/FLAGde289fc6f [2020-10-14 04:32:05,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:32:05,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label26.c [2020-10-14 04:32:05,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf646e9ab/02802240e89f42a4af485004dfba6477/FLAGde289fc6f [2020-10-14 04:32:06,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf646e9ab/02802240e89f42a4af485004dfba6477 [2020-10-14 04:32:06,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:32:06,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:32:06,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:32:06,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:32:06,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:32:06,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:06" (1/1) ... [2020-10-14 04:32:06,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8021c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:06, skipping insertion in model container [2020-10-14 04:32:06,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:32:06" (1/1) ... [2020-10-14 04:32:06,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:32:06,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:32:08,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:32:08,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:32:09,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:32:09,788 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:32:09,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09 WrapperNode [2020-10-14 04:32:09,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:32:09,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:32:09,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:32:09,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:32:09,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:09,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:09,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:09,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:10,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:10,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:10,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (1/1) ... [2020-10-14 04:32:10,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:32:10,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:32:10,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:32:10,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:32:10,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (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 04:32:10,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:32:10,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:32:10,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:32:10,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:32:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:32:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:32:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:32:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:32:10,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:32:10,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:32:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:32:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:32:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:32:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:32:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:32:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:32:22,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:32:22,266 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:32:22,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:22 BoogieIcfgContainer [2020-10-14 04:32:22,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:32:22,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:32:22,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:32:22,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:32:22,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:32:06" (1/3) ... [2020-10-14 04:32:22,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55962f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:22, skipping insertion in model container [2020-10-14 04:32:22,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:32:09" (2/3) ... [2020-10-14 04:32:22,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55962f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:32:22, skipping insertion in model container [2020-10-14 04:32:22,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:32:22" (3/3) ... [2020-10-14 04:32:22,288 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label26.c [2020-10-14 04:32:22,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:32:22,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:32:22,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:32:22,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:32:22,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:32:22,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:32:22,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:32:22,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:32:22,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:32:22,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:32:22,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:32:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:32:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 04:32:22,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:22,405 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] [2020-10-14 04:32:22,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:22,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2022464298, now seen corresponding path program 1 times [2020-10-14 04:32:22,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:22,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012198683] [2020-10-14 04:32:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:22,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:22,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:32:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-14 04:32:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:22,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:32:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:32:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:32:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:32:23,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:32:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:23,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:32:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:23,080 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 04:32:23,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012198683] [2020-10-14 04:32:23,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:32:23,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:32:23,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498604223] [2020-10-14 04:32:23,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:32:23,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:32:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:32:23,106 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:32:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:32:45,988 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 04:32:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:32:45,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 04:32:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:32:46,036 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 04:32:46,036 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 04:32:46,049 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 04:32:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 04:32:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 04:32:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 04:32:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 04:32:46,286 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 32 [2020-10-14 04:32:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:32:46,287 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 04:32:46,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:32:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 04:32:46,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 04:32:46,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:46,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:46,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:32:46,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2060753195, now seen corresponding path program 1 times [2020-10-14 04:32:46,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:46,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842858793] [2020-10-14 04:32:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 04:32:47,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:32:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-14 04:32:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:47,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:32:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:32:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:32:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:47,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:47,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:32:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:47,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:47,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:32:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:32:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:32:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:32:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 04:32:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:47,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:32:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:32:47,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842858793] [2020-10-14 04:32:47,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:32:47,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:32:47,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822905953] [2020-10-14 04:32:47,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:32:47,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:32:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:32:47,895 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 5 states. [2020-10-14 04:33:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:33:19,359 INFO L93 Difference]: Finished difference Result 7905 states and 13886 transitions. [2020-10-14 04:33:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:33:19,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 04:33:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:33:19,386 INFO L225 Difference]: With dead ends: 7905 [2020-10-14 04:33:19,386 INFO L226 Difference]: Without dead ends: 4712 [2020-10-14 04:33:19,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:33:19,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2020-10-14 04:33:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4652. [2020-10-14 04:33:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4652 states. [2020-10-14 04:33:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 7682 transitions. [2020-10-14 04:33:19,510 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 7682 transitions. Word has length 104 [2020-10-14 04:33:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:33:19,511 INFO L479 AbstractCegarLoop]: Abstraction has 4652 states and 7682 transitions. [2020-10-14 04:33:19,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:33:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 7682 transitions. [2020-10-14 04:33:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 04:33:19,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:19,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:33:19,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:33:19,515 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:19,515 INFO L82 PathProgramCache]: Analyzing trace with hash 35358019, now seen corresponding path program 1 times [2020-10-14 04:33:19,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:19,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078749849] [2020-10-14 04:33:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:20,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:20,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 04:33:20,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:33:20,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-14 04:33:20,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:20,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 04:33:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 04:33:20,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:33:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:20,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:33:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:33:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:33:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:20,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:20,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:33:20,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 04:33:20,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:20,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:33:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:33:20,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078749849] [2020-10-14 04:33:20,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:33:20,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:33:20,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948741145] [2020-10-14 04:33:20,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:33:20,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:20,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:33:20,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:33:20,845 INFO L87 Difference]: Start difference. First operand 4652 states and 7682 transitions. Second operand 6 states. [2020-10-14 04:34:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:34:01,709 INFO L93 Difference]: Finished difference Result 17774 states and 30092 transitions. [2020-10-14 04:34:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:34:01,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 04:34:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:34:01,782 INFO L225 Difference]: With dead ends: 17774 [2020-10-14 04:34:01,782 INFO L226 Difference]: Without dead ends: 13128 [2020-10-14 04:34:01,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 04:34:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13128 states. [2020-10-14 04:34:02,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13128 to 13116. [2020-10-14 04:34:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13116 states. [2020-10-14 04:34:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 20146 transitions. [2020-10-14 04:34:02,151 INFO L78 Accepts]: Start accepts. Automaton has 13116 states and 20146 transitions. Word has length 131 [2020-10-14 04:34:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:34:02,153 INFO L479 AbstractCegarLoop]: Abstraction has 13116 states and 20146 transitions. [2020-10-14 04:34:02,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:34:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 13116 states and 20146 transitions. [2020-10-14 04:34:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 04:34:02,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:34:02,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:34:02,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:34:02,167 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:34:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:34:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash -760767100, now seen corresponding path program 1 times [2020-10-14 04:34:02,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:34:02,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227512] [2020-10-14 04:34:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:34:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:02,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 04:34:02,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-14 04:34:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:02,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:34:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:34:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 04:34:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:02,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:34:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:02,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:02,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:34:02,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:34:02,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:02,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:34:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:34:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:34:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:34:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:34:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 04:34:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:03,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:34:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:34:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 04:34:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:34:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227512] [2020-10-14 04:34:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:34:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:34:03,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684262616] [2020-10-14 04:34:03,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:34:03,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:34:03,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:34:03,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:34:03,434 INFO L87 Difference]: Start difference. First operand 13116 states and 20146 transitions. Second operand 7 states. [2020-10-14 04:34:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:34:57,088 INFO L93 Difference]: Finished difference Result 31029 states and 48938 transitions. [2020-10-14 04:34:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:34:57,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-14 04:34:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:34:57,183 INFO L225 Difference]: With dead ends: 31029 [2020-10-14 04:34:57,183 INFO L226 Difference]: Without dead ends: 17919 [2020-10-14 04:34:57,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:34:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17919 states. [2020-10-14 04:34:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17919 to 17791. [2020-10-14 04:34:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17791 states. [2020-10-14 04:34:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17791 states to 17791 states and 26932 transitions. [2020-10-14 04:34:57,837 INFO L78 Accepts]: Start accepts. Automaton has 17791 states and 26932 transitions. Word has length 166 [2020-10-14 04:34:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:34:57,837 INFO L479 AbstractCegarLoop]: Abstraction has 17791 states and 26932 transitions. [2020-10-14 04:34:57,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:34:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 17791 states and 26932 transitions. [2020-10-14 04:34:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 04:34:57,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:34:57,845 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:34:57,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:34:57,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:34:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:34:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1393376281, now seen corresponding path program 1 times [2020-10-14 04:34:57,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:34:57,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732883509] [2020-10-14 04:34:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:34:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:59,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 04:34:59,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:34:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-14 04:34:59,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:59,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:34:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:34:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 04:34:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:34:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:34:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:59,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:59,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:34:59,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:34:59,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:59,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:34:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:34:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:34:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:34:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:34:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:34:59,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:34:59,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:34:59,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:34:59,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:34:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:34:59,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:34:59,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:34:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:34:59,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:35:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:35:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 138 [2020-10-14 04:35:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:35:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:35:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:35:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:35:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:35:00,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:35:00,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 04:35:00,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:35:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:35:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:35:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:35:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 04:35:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:35:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:35:00,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732883509] [2020-10-14 04:35:00,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:35:00,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:35:00,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230952915] [2020-10-14 04:35:00,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:35:00,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:35:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:35:00,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:35:00,502 INFO L87 Difference]: Start difference. First operand 17791 states and 26932 transitions. Second operand 7 states.