/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:02:12,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:02:12,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:02:12,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:02:12,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:02:12,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:02:12,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:02:12,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:02:12,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:02:12,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:02:12,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:02:12,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:02:12,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:02:12,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:02:12,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:02:12,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:02:12,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:02:12,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:02:12,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:02:12,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:02:12,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:02:12,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:02:12,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:02:12,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:02:12,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:02:12,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:02:12,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:02:12,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:02:12,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:02:12,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:02:12,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:02:12,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:02:12,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:02:12,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:02:12,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:02:12,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:02:12,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:02:12,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:02:12,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:02:12,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:02:12,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:02:12,427 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 [2020-10-28 14:02:12,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:02:12,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:02:12,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:02:12,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:02:12,493 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:02:12,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:02:12,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:02:12,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:02:12,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:02:12,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:02:12,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:02:12,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:02:12,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:02:12,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:02:12,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:02:12,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:02:12,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:02:12,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:02:12,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:02:12,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:02:12,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:02:12,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:02:12,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:02:12,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:02:12,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:02:12,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:02:12,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:02:12,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:02:12,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:02:12,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:02:12,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:02:12,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:02:12,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:02:12,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:02:12,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:02:12,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label01.c [2020-10-28 14:02:13,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5836bc6bf/44aa298b82f44a429eb2a5f287eb025c/FLAG3cee61339 [2020-10-28 14:02:14,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:02:14,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label01.c [2020-10-28 14:02:14,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5836bc6bf/44aa298b82f44a429eb2a5f287eb025c/FLAG3cee61339 [2020-10-28 14:02:14,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5836bc6bf/44aa298b82f44a429eb2a5f287eb025c [2020-10-28 14:02:14,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:02:14,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:02:14,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:02:14,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:02:14,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:02:14,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:02:14" (1/1) ... [2020-10-28 14:02:14,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d2ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:14, skipping insertion in model container [2020-10-28 14:02:14,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:02:14" (1/1) ... [2020-10-28 14:02:14,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:02:14,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:02:16,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:02:16,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:02:18,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:02:18,128 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:02:18,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18 WrapperNode [2020-10-28 14:02:18,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:02:18,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:02:18,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:02:18,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:02:18,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (1/1) ... [2020-10-28 14:02:18,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:02:18,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:02:18,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:02:18,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:02:18,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (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 [2020-10-28 14:02:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:02:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:02:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:02:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:02:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:02:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:02:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:02:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:02:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:02:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:02:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:02:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:02:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:02:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:02:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:02:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:02:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:02:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:02:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:02:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:02:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:02:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:02:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:02:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:02:35,593 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:02:35,594 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:02:35,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:02:35 BoogieIcfgContainer [2020-10-28 14:02:35,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:02:35,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:02:35,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:02:35,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:02:35,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:02:14" (1/3) ... [2020-10-28 14:02:35,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7d45ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:02:35, skipping insertion in model container [2020-10-28 14:02:35,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:18" (2/3) ... [2020-10-28 14:02:35,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7d45ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:02:35, skipping insertion in model container [2020-10-28 14:02:35,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:02:35" (3/3) ... [2020-10-28 14:02:35,608 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label01.c [2020-10-28 14:02:35,621 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:02:35,628 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:02:35,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:02:35,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:02:35,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:02:35,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:02:35,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:02:35,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:02:35,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:02:35,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:02:35,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:02:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:02:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 14:02:35,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:35,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:35,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1283722413, now seen corresponding path program 1 times [2020-10-28 14:02:35,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:35,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323992993] [2020-10-28 14:02:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:36,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 14:02:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-28 14:02:36,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:36,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:02:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:02:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:02:36,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:02:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:36,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:36,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:02:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:02:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:02:36,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323992993] [2020-10-28 14:02:36,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:02:36,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:02:36,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975292231] [2020-10-28 14:02:37,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:02:37,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:02:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:02:37,021 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:03:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:04,552 INFO L93 Difference]: Finished difference Result 5100 states and 9572 transitions. [2020-10-28 14:03:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:03:04,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-28 14:03:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:04,607 INFO L225 Difference]: With dead ends: 5100 [2020-10-28 14:03:04,608 INFO L226 Difference]: Without dead ends: 3255 [2020-10-28 14:03:04,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:03:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-28 14:03:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209. [2020-10-28 14:03:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2020-10-28 14:03:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions. [2020-10-28 14:03:04,851 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 70 [2020-10-28 14:03:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:04,852 INFO L481 AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions. [2020-10-28 14:03:04,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:03:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions. [2020-10-28 14:03:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 14:03:04,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:04,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:03:04,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:03:04,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:04,861 INFO L82 PathProgramCache]: Analyzing trace with hash 575086692, now seen corresponding path program 1 times [2020-10-28 14:03:04,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:04,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919453945] [2020-10-28 14:03:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:06,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:06,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 14:03:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:03:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1700 [2020-10-28 14:03:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:06,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:03:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:03:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:03:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:03:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:03:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:06,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:03:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:06,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:07,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:07,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:03:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 14:03:07,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:07,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:03:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:03:07,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919453945] [2020-10-28 14:03:07,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:03:07,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:03:07,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15177611] [2020-10-28 14:03:07,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:03:07,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:07,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:03:07,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:03:07,173 INFO L87 Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 8 states. [2020-10-28 14:03:07,358 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:04:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:03,454 INFO L93 Difference]: Finished difference Result 12277 states and 20208 transitions. [2020-10-28 14:04:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 14:04:03,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-10-28 14:04:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:03,515 INFO L225 Difference]: With dead ends: 12277 [2020-10-28 14:04:03,515 INFO L226 Difference]: Without dead ends: 9074 [2020-10-28 14:04:03,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:04:03,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2020-10-28 14:04:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 9029. [2020-10-28 14:04:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9029 states. [2020-10-28 14:04:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9029 states to 9029 states and 13498 transitions. [2020-10-28 14:04:03,873 INFO L78 Accepts]: Start accepts. Automaton has 9029 states and 13498 transitions. Word has length 145 [2020-10-28 14:04:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:03,875 INFO L481 AbstractCegarLoop]: Abstraction has 9029 states and 13498 transitions. [2020-10-28 14:04:03,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:04:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 9029 states and 13498 transitions. [2020-10-28 14:04:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 14:04:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:03,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:04:03,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:04:03,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1341318878, now seen corresponding path program 1 times [2020-10-28 14:04:03,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:03,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607764127] [2020-10-28 14:04:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 14:04:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:04:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-28 14:04:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:06,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:04:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:04:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:04:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:04:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:06,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:06,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:06,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:06,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:04:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:06,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:04:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 14:04:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:06,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 14:04:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:04:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:04:06,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607764127] [2020-10-28 14:04:06,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:04:06,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:04:06,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092816961] [2020-10-28 14:04:06,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:04:06,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:04:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:04:06,972 INFO L87 Difference]: Start difference. First operand 9029 states and 13498 transitions. Second operand 7 states. [2020-10-28 14:05:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:05:09,689 INFO L93 Difference]: Finished difference Result 27410 states and 41978 transitions. [2020-10-28 14:05:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:05:09,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-28 14:05:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:05:09,782 INFO L225 Difference]: With dead ends: 27410 [2020-10-28 14:05:09,782 INFO L226 Difference]: Without dead ends: 18387 [2020-10-28 14:05:09,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:05:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18387 states. [2020-10-28 14:05:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18387 to 18080. [2020-10-28 14:05:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18080 states. [2020-10-28 14:05:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18080 states to 18080 states and 24579 transitions. [2020-10-28 14:05:10,341 INFO L78 Accepts]: Start accepts. Automaton has 18080 states and 24579 transitions. Word has length 171 [2020-10-28 14:05:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:05:10,341 INFO L481 AbstractCegarLoop]: Abstraction has 18080 states and 24579 transitions. [2020-10-28 14:05:10,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:05:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18080 states and 24579 transitions. [2020-10-28 14:05:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 14:05:10,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:05:10,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:05:10,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:05:10,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:05:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:05:10,348 INFO L82 PathProgramCache]: Analyzing trace with hash -424090858, now seen corresponding path program 1 times [2020-10-28 14:05:10,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:05:10,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827571045] [2020-10-28 14:05:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:05:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:05:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:05:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 14:05:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:05:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:05:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:05:12,219 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:05:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:05:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:05:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:12,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:05:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:05:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:05:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:05:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:05:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:05:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:05:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:05:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 14:05:12,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 14:05:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:05:12,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:05:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:05:12,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827571045] [2020-10-28 14:05:12,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:05:12,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:05:12,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632323394] [2020-10-28 14:05:12,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:05:12,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:05:12,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:05:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:05:12,544 INFO L87 Difference]: Start difference. First operand 18080 states and 24579 transitions. Second operand 5 states. [2020-10-28 14:05:12,713 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:06:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:06:11,666 INFO L93 Difference]: Finished difference Result 53382 states and 75253 transitions. [2020-10-28 14:06:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:06:11,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-28 14:06:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:06:11,844 INFO L225 Difference]: With dead ends: 53382 [2020-10-28 14:06:11,844 INFO L226 Difference]: Without dead ends: 35308 [2020-10-28 14:06:11,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:06:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35308 states. [2020-10-28 14:06:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35308 to 35273. [2020-10-28 14:06:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35273 states. [2020-10-28 14:06:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35273 states to 35273 states and 48518 transitions. [2020-10-28 14:06:13,005 INFO L78 Accepts]: Start accepts. Automaton has 35273 states and 48518 transitions. Word has length 193 [2020-10-28 14:06:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:06:13,007 INFO L481 AbstractCegarLoop]: Abstraction has 35273 states and 48518 transitions. [2020-10-28 14:06:13,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:06:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35273 states and 48518 transitions. [2020-10-28 14:06:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 14:06:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:06:13,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 14:06:13,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:06:13,014 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:06:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:06:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1198578357, now seen corresponding path program 1 times [2020-10-28 14:06:13,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:06:13,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897029288] [2020-10-28 14:06:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:06:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:06:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 14:06:15,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:06:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2465 [2020-10-28 14:06:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:15,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:06:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:06:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 14:06:15,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:06:15,801 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:06:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:06:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:06:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:15,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:15,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:06:15,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:06:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:06:15,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:15,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:06:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:06:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:06:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:06:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:06:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:06:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:16,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:16,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 14:06:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:06:16,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 14:06:16,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:16,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:06:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:06:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 14:06:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0