/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:09:21,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:09:21,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:09:21,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:09:21,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:09:21,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:09:21,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:09:21,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:09:21,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:09:21,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:09:21,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:09:21,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:09:21,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:09:21,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:09:21,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:09:21,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:09:21,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:09:21,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:09:21,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:09:21,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:09:21,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:09:21,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:09:21,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:09:21,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:09:21,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:09:21,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:09:21,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:09:21,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:09:21,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:09:21,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:09:21,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:09:21,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:09:21,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:09:21,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:09:21,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:09:21,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:09:21,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:09:21,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:09:21,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:09:21,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:09:21,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:09:21,425 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 23:09:21,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:09:21,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:09:21,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:09:21,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:09:21,450 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:09:21,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:09:21,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:09:21,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:09:21,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:09:21,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:09:21,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:09:21,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:09:21,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:09:21,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:09:21,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:09:21,452 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:09:21,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:09:21,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:09:21,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:09:21,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:09:21,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:09:21,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:09:21,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:09:21,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:09:21,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:09:21,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:09:21,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:09:21,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:09:21,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:09:21,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:09:21,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:09:21,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:09:21,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:09:21,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:09:21,787 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:09:21,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-14 23:09:21,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c65a63650/9d0ed658652347ccb53f486e5ec90207/FLAG33c091e94 [2020-10-14 23:09:22,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:09:22,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label46.c [2020-10-14 23:09:22,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c65a63650/9d0ed658652347ccb53f486e5ec90207/FLAG33c091e94 [2020-10-14 23:09:23,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c65a63650/9d0ed658652347ccb53f486e5ec90207 [2020-10-14 23:09:23,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:09:23,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:09:23,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:23,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:09:23,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:09:23,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:23" (1/1) ... [2020-10-14 23:09:23,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afd2ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:23, skipping insertion in model container [2020-10-14 23:09:23,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:23" (1/1) ... [2020-10-14 23:09:23,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:09:23,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:09:25,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:25,786 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:09:27,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:27,054 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:09:27,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27 WrapperNode [2020-10-14 23:09:27,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:27,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:09:27,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:09:27,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:09:27,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (1/1) ... [2020-10-14 23:09:27,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:09:27,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:09:27,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:09:27,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:09:27,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (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 23:09:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:09:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:09:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:09:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:09:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:09:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:09:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:09:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:09:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:09:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:09:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:09:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:09:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:09:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:09:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:09:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:09:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:09:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:09:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:09:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:09:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:09:40,534 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:09:40,535 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:09:40,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:40 BoogieIcfgContainer [2020-10-14 23:09:40,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:09:40,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:09:40,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:09:40,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:09:40,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:09:23" (1/3) ... [2020-10-14 23:09:40,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3454d936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:40, skipping insertion in model container [2020-10-14 23:09:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:27" (2/3) ... [2020-10-14 23:09:40,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3454d936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:40, skipping insertion in model container [2020-10-14 23:09:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:40" (3/3) ... [2020-10-14 23:09:40,559 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label46.c [2020-10-14 23:09:40,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:09:40,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:09:40,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:09:40,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:09:40,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:09:40,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:09:40,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:09:40,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:09:40,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:09:40,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:09:40,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:09:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:09:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:09:40,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:40,709 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] [2020-10-14 23:09:40,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:40,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1491137538, now seen corresponding path program 1 times [2020-10-14 23:09:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:40,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087096323] [2020-10-14 23:09:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:09:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-14 23:09:41,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:41,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:41,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:09:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:09:41,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:41,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:41,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:41,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:09:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:41,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:41,605 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 23:09:41,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087096323] [2020-10-14 23:09:41,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:41,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:09:41,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252819946] [2020-10-14 23:09:41,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:09:41,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:41,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:09:41,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:09:41,635 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:10:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:06,591 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-14 23:10:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:10:06,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 23:10:06,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:06,640 INFO L225 Difference]: With dead ends: 5031 [2020-10-14 23:10:06,640 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 23:10:06,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 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 23:10:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 23:10:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-14 23:10:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-14 23:10:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-14 23:10:06,949 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 38 [2020-10-14 23:10:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:06,950 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-14 23:10:06,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:10:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-14 23:10:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 23:10:06,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:06,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:06,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:10:06,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash -870554780, now seen corresponding path program 1 times [2020-10-14 23:10:06,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:06,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343436832] [2020-10-14 23:10:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:09,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 23:10:09,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:10:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2365 [2020-10-14 23:10:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:09,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:10:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:10:09,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:10:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:09,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:09,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:09,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:10:09,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:09,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:10:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:10,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:10:10,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:10:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 23:10:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:10,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:10:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:10:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:10:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:10:10,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343436832] [2020-10-14 23:10:10,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:10:10,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:10:10,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593077627] [2020-10-14 23:10:10,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:10:10,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:10:10,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:10:10,168 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 7 states. [2020-10-14 23:10:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:53,340 INFO L93 Difference]: Finished difference Result 9393 states and 14718 transitions. [2020-10-14 23:10:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:10:53,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 23:10:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:53,373 INFO L225 Difference]: With dead ends: 9393 [2020-10-14 23:10:53,374 INFO L226 Difference]: Without dead ends: 6215 [2020-10-14 23:10:53,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:10:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2020-10-14 23:10:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 6096. [2020-10-14 23:10:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6096 states. [2020-10-14 23:10:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6096 states to 6096 states and 8428 transitions. [2020-10-14 23:10:53,527 INFO L78 Accepts]: Start accepts. Automaton has 6096 states and 8428 transitions. Word has length 111 [2020-10-14 23:10:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:53,528 INFO L479 AbstractCegarLoop]: Abstraction has 6096 states and 8428 transitions. [2020-10-14 23:10:53,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:10:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 6096 states and 8428 transitions. [2020-10-14 23:10:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 23:10:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:53,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:53,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:10:53,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:53,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash -211023258, now seen corresponding path program 1 times [2020-10-14 23:10:53,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:53,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613505028] [2020-10-14 23:10:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 23:10:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:10:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1229 [2020-10-14 23:10:54,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:54,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:10:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:10:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:10:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:54,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:55,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:55,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:10:55,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:10:55,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 23:10:55,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:55,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:10:55,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:10:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:10:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:10:55,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613505028] [2020-10-14 23:10:55,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:10:55,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:10:55,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835535763] [2020-10-14 23:10:55,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:10:55,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:55,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:10:55,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:10:55,218 INFO L87 Difference]: Start difference. First operand 6096 states and 8428 transitions. Second operand 6 states. [2020-10-14 23:11:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:28,714 INFO L93 Difference]: Finished difference Result 18133 states and 25338 transitions. [2020-10-14 23:11:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:11:28,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-14 23:11:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:28,782 INFO L225 Difference]: With dead ends: 18133 [2020-10-14 23:11:28,782 INFO L226 Difference]: Without dead ends: 12043 [2020-10-14 23:11:28,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:11:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12043 states. [2020-10-14 23:11:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12043 to 11987. [2020-10-14 23:11:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11987 states. [2020-10-14 23:11:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11987 states to 11987 states and 15358 transitions. [2020-10-14 23:11:29,070 INFO L78 Accepts]: Start accepts. Automaton has 11987 states and 15358 transitions. Word has length 111 [2020-10-14 23:11:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:29,072 INFO L479 AbstractCegarLoop]: Abstraction has 11987 states and 15358 transitions. [2020-10-14 23:11:29,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:11:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11987 states and 15358 transitions. [2020-10-14 23:11:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 23:11:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:29,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:29,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:11:29,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:29,085 INFO L82 PathProgramCache]: Analyzing trace with hash 100518583, now seen corresponding path program 1 times [2020-10-14 23:11:29,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:29,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221764681] [2020-10-14 23:11:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:30,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 23:11:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:11:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-14 23:11:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:30,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:11:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:11:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:11:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:30,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:30,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:30,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:30,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:11:30,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:30,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:11:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:30,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:30,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:11:30,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221764681] [2020-10-14 23:11:30,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:11:30,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:11:30,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032798393] [2020-10-14 23:11:30,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:11:30,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:11:30,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:30,861 INFO L87 Difference]: Start difference. First operand 11987 states and 15358 transitions. Second operand 7 states. [2020-10-14 23:12:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:35,638 INFO L93 Difference]: Finished difference Result 36518 states and 47972 transitions. [2020-10-14 23:12:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:12:35,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-14 23:12:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:35,735 INFO L225 Difference]: With dead ends: 36518 [2020-10-14 23:12:35,735 INFO L226 Difference]: Without dead ends: 24537 [2020-10-14 23:12:35,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:12:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24537 states. [2020-10-14 23:12:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24537 to 24208. [2020-10-14 23:12:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24208 states. [2020-10-14 23:12:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24208 states to 24208 states and 29452 transitions. [2020-10-14 23:12:36,330 INFO L78 Accepts]: Start accepts. Automaton has 24208 states and 29452 transitions. Word has length 139 [2020-10-14 23:12:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:36,330 INFO L479 AbstractCegarLoop]: Abstraction has 24208 states and 29452 transitions. [2020-10-14 23:12:36,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:12:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 24208 states and 29452 transitions. [2020-10-14 23:12:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 23:12:36,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:36,335 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 23:12:36,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:12:36,335 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1819935887, now seen corresponding path program 1 times [2020-10-14 23:12:36,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:36,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353240067] [2020-10-14 23:12:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 23:12:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:12:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 23:12:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:12:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 23:12:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:12:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:41,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:12:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:12:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 23:12:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:12:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 23:12:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:42,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:42,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:12:42,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:12:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:42,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:12:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:12:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 23:12:42,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353240067] [2020-10-14 23:12:42,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:12:42,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:12:42,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195742641] [2020-10-14 23:12:42,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:42,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:42,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:42,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:42,371 INFO L87 Difference]: Start difference. First operand 24208 states and 29452 transitions. Second operand 7 states.