/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem12_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:57:56,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:57:56,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:57:56,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:57:56,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:57:56,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:57:56,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:57:56,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:57:56,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:57:56,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:57:56,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:57:56,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:57:56,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:57:56,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:57:56,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:57:56,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:57:56,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:57:56,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:57:56,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:57:56,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:57:56,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:57:56,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:57:56,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:57:56,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:57:56,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:57:56,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:57:56,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:57:56,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:57:56,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:57:56,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:57:56,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:57:56,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:57:56,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:57:56,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:57:56,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:57:56,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:57:56,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:57:56,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:57:56,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:57:56,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:57:56,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:57:56,376 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 [2020-10-29 06:57:56,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:57:56,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:57:56,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:57:56,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:57:56,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:57:56,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:57:56,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:57:56,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:57:56,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:57:56,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:57:56,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:57:56,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:57:56,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:57:56,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:57:56,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:57:56,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:57:56,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:57:56,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:57:56,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:57:56,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:57:56,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:57:56,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:57:56,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:57:56,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:57:56,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:57:56,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:57:56,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:57:56,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:57:56,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:57:56,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:57:56,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:57:56,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:57:56,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:57:56,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:57:56,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:57:56,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-29 06:57:56,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8b86d5c/6b5b699b4a4e4727951c6c17a8f9ad99/FLAG521bde523 [2020-10-29 06:57:57,957 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:57:57,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2020-10-29 06:57:57,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8b86d5c/6b5b699b4a4e4727951c6c17a8f9ad99/FLAG521bde523 [2020-10-29 06:57:58,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8b86d5c/6b5b699b4a4e4727951c6c17a8f9ad99 [2020-10-29 06:57:58,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:57:58,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:57:58,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:57:58,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:57:58,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:57:58,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:58" (1/1) ... [2020-10-29 06:57:58,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:58, skipping insertion in model container [2020-10-29 06:57:58,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:58" (1/1) ... [2020-10-29 06:57:58,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:57:58,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:58:00,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:00,299 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:58:01,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:01,218 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:58:01,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01 WrapperNode [2020-10-29 06:58:01,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:58:01,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:58:01,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:58:01,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:58:01,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (1/1) ... [2020-10-29 06:58:01,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:58:01,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:58:01,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:58:01,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:58:01,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (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 [2020-10-29 06:58:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:58:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:58:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:58:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:58:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:58:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:58:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:58:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:58:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:58:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:58:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:58:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:58:01,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:58:01,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:58:07,711 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:58:07,712 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:58:07,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:58:07 BoogieIcfgContainer [2020-10-29 06:58:07,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:58:07,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:58:07,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:58:07,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:58:07,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:57:58" (1/3) ... [2020-10-29 06:58:07,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f32b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:58:07, skipping insertion in model container [2020-10-29 06:58:07,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:01" (2/3) ... [2020-10-29 06:58:07,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f32b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:58:07, skipping insertion in model container [2020-10-29 06:58:07,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:58:07" (3/3) ... [2020-10-29 06:58:07,727 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2020-10-29 06:58:07,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:58:07,745 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:58:07,760 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:58:07,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:58:07,797 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:58:07,797 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:58:07,797 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:58:07,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:58:07,798 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:58:07,798 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:58:07,798 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:58:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:58:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 06:58:07,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:07,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:07,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1921821756, now seen corresponding path program 1 times [2020-10-29 06:58:07,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:07,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473755056] [2020-10-29 06:58:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 06:58:08,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-29 06:58:08,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 06:58:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:58:08,845 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:58:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 06:58:08,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:08,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:08,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:08,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473755056] [2020-10-29 06:58:08,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:08,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:58:08,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827103158] [2020-10-29 06:58:08,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:58:08,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:08,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:58:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:58:08,956 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:58:09,120 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:58:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:19,640 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:58:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:58:19,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 06:58:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:19,684 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:58:19,685 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:58:19,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:58:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:58:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:58:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:58:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 06:58:19,879 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 19 [2020-10-29 06:58:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:19,880 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 06:58:19,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:58:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 06:58:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 06:58:19,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:19,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:19,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:58:19,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1044444113, now seen corresponding path program 1 times [2020-10-29 06:58:19,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:19,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124252188] [2020-10-29 06:58:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:21,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 06:58:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-29 06:58:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:21,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:58:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:58:21,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:21,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:21,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:21,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:58:21,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:21,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:21,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:21,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:21,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:21,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:21,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:58:21,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:21,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 06:58:21,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:21,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:58:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:21,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124252188] [2020-10-29 06:58:21,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:21,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:21,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253747457] [2020-10-29 06:58:21,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:21,530 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-29 06:58:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:34,846 INFO L93 Difference]: Finished difference Result 4755 states and 8344 transitions. [2020-10-29 06:58:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:58:34,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-10-29 06:58:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:34,876 INFO L225 Difference]: With dead ends: 4755 [2020-10-29 06:58:34,877 INFO L226 Difference]: Without dead ends: 3207 [2020-10-29 06:58:34,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:58:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2020-10-29 06:58:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3120. [2020-10-29 06:58:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-29 06:58:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4910 transitions. [2020-10-29 06:58:34,995 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4910 transitions. Word has length 88 [2020-10-29 06:58:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:34,996 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4910 transitions. [2020-10-29 06:58:34,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4910 transitions. [2020-10-29 06:58:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 06:58:35,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:35,008 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:58:35,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:58:35,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1909801181, now seen corresponding path program 1 times [2020-10-29 06:58:35,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:35,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280578969] [2020-10-29 06:58:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:35,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:35,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 06:58:35,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-29 06:58:35,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:35,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:58:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:58:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:35,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:35,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:58:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:35,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:36,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:58:36,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:58:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:36,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:58:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:58:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280578969] [2020-10-29 06:58:36,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:36,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:58:36,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814691083] [2020-10-29 06:58:36,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:58:36,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:36,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:58:36,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:58:36,110 INFO L87 Difference]: Start difference. First operand 3120 states and 4910 transitions. Second operand 6 states. [2020-10-29 06:58:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:48,345 INFO L93 Difference]: Finished difference Result 9439 states and 14986 transitions. [2020-10-29 06:58:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:58:48,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-29 06:58:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:48,386 INFO L225 Difference]: With dead ends: 9439 [2020-10-29 06:58:48,387 INFO L226 Difference]: Without dead ends: 6325 [2020-10-29 06:58:48,397 INFO L677 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 [2020-10-29 06:58:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2020-10-29 06:58:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 6283. [2020-10-29 06:58:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6283 states. [2020-10-29 06:58:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 8775 transitions. [2020-10-29 06:58:48,580 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 8775 transitions. Word has length 94 [2020-10-29 06:58:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:48,581 INFO L481 AbstractCegarLoop]: Abstraction has 6283 states and 8775 transitions. [2020-10-29 06:58:48,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:58:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 8775 transitions. [2020-10-29 06:58:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 06:58:48,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:48,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:48,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:58:48,586 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:48,586 INFO L82 PathProgramCache]: Analyzing trace with hash -462936123, now seen corresponding path program 1 times [2020-10-29 06:58:48,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:48,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798256552] [2020-10-29 06:58:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:49,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:58:49,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-29 06:58:49,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:49,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:49,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 06:58:49,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:49,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:49,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:49,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:58:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:49,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 06:58:49,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 06:58:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:49,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 06:58:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:58:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:49,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798256552] [2020-10-29 06:58:49,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:49,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:49,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453232490] [2020-10-29 06:58:49,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:49,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:50,006 INFO L87 Difference]: Start difference. First operand 6283 states and 8775 transitions. Second operand 7 states. [2020-10-29 06:59:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:03,724 INFO L93 Difference]: Finished difference Result 14480 states and 21313 transitions. [2020-10-29 06:59:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:59:03,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 06:59:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:03,763 INFO L225 Difference]: With dead ends: 14480 [2020-10-29 06:59:03,763 INFO L226 Difference]: Without dead ends: 8203 [2020-10-29 06:59:03,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:59:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8203 states. [2020-10-29 06:59:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8203 to 7122. [2020-10-29 06:59:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7122 states. [2020-10-29 06:59:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 9584 transitions. [2020-10-29 06:59:03,979 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 9584 transitions. Word has length 119 [2020-10-29 06:59:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:03,980 INFO L481 AbstractCegarLoop]: Abstraction has 7122 states and 9584 transitions. [2020-10-29 06:59:03,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 9584 transitions. [2020-10-29 06:59:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 06:59:03,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:03,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:59:03,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:59:03,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:03,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:03,983 INFO L82 PathProgramCache]: Analyzing trace with hash -675201431, now seen corresponding path program 1 times [2020-10-29 06:59:03,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:03,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592555371] [2020-10-29 06:59:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:59:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:59:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:59:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:05,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:59:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-29 06:59:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:05,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:59:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:59:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:59:05,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592555371] [2020-10-29 06:59:05,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:05,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:59:05,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29253967] [2020-10-29 06:59:05,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:59:05,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:05,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:59:05,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:59:05,460 INFO L87 Difference]: Start difference. First operand 7122 states and 9584 transitions. Second operand 5 states. [2020-10-29 06:59:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:16,710 INFO L93 Difference]: Finished difference Result 14246 states and 19116 transitions. [2020-10-29 06:59:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:16,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-29 06:59:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:16,768 INFO L225 Difference]: With dead ends: 14246 [2020-10-29 06:59:16,768 INFO L226 Difference]: Without dead ends: 11056 [2020-10-29 06:59:16,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2020-10-29 06:59:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 9482. [2020-10-29 06:59:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9482 states. [2020-10-29 06:59:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9482 states to 9482 states and 12377 transitions. [2020-10-29 06:59:17,051 INFO L78 Accepts]: Start accepts. Automaton has 9482 states and 12377 transitions. Word has length 164 [2020-10-29 06:59:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:17,051 INFO L481 AbstractCegarLoop]: Abstraction has 9482 states and 12377 transitions. [2020-10-29 06:59:17,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:59:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9482 states and 12377 transitions. [2020-10-29 06:59:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 06:59:17,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:17,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:59:17,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:59:17,059 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:17,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1207053355, now seen corresponding path program 1 times [2020-10-29 06:59:17,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:17,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490950594] [2020-10-29 06:59:17,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:18,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:18,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-29 06:59:18,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 06:59:19,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:59:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:19,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:19,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:19,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 06:59:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 06:59:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:20,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490950594] [2020-10-29 06:59:20,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:59:20,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42646633] [2020-10-29 06:59:20,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:20,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:20,312 INFO L87 Difference]: Start difference. First operand 9482 states and 12377 transitions. Second operand 7 states. [2020-10-29 06:59:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:32,494 INFO L93 Difference]: Finished difference Result 19319 states and 25385 transitions. [2020-10-29 06:59:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:59:32,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-29 06:59:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:32,528 INFO L225 Difference]: With dead ends: 19319 [2020-10-29 06:59:32,528 INFO L226 Difference]: Without dead ends: 10610 [2020-10-29 06:59:32,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:59:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2020-10-29 06:59:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 10295. [2020-10-29 06:59:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10295 states. [2020-10-29 06:59:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10295 states to 10295 states and 13219 transitions. [2020-10-29 06:59:32,856 INFO L78 Accepts]: Start accepts. Automaton has 10295 states and 13219 transitions. Word has length 218 [2020-10-29 06:59:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:32,857 INFO L481 AbstractCegarLoop]: Abstraction has 10295 states and 13219 transitions. [2020-10-29 06:59:32,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10295 states and 13219 transitions. [2020-10-29 06:59:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 06:59:32,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:32,861 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:32,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:59:32,862 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:32,862 INFO L82 PathProgramCache]: Analyzing trace with hash -99325808, now seen corresponding path program 1 times [2020-10-29 06:59:32,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:32,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11235233] [2020-10-29 06:59:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 06:59:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:59:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:34,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:34,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:34,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:35,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:59:35,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:59:35,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:35,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:59:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:59:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:59:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:35,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11235233] [2020-10-29 06:59:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:35,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943299414] [2020-10-29 06:59:35,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:35,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:35,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:35,381 INFO L87 Difference]: Start difference. First operand 10295 states and 13219 transitions. Second operand 7 states. [2020-10-29 06:59:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:52,548 INFO L93 Difference]: Finished difference Result 27302 states and 37264 transitions. [2020-10-29 06:59:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:59:52,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-29 06:59:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:52,630 INFO L225 Difference]: With dead ends: 27302 [2020-10-29 06:59:52,631 INFO L226 Difference]: Without dead ends: 18549 [2020-10-29 06:59:52,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:59:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18549 states. [2020-10-29 06:59:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18549 to 18358. [2020-10-29 06:59:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18358 states. [2020-10-29 06:59:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18358 states to 18358 states and 24444 transitions. [2020-10-29 06:59:53,112 INFO L78 Accepts]: Start accepts. Automaton has 18358 states and 24444 transitions. Word has length 239 [2020-10-29 06:59:53,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:53,113 INFO L481 AbstractCegarLoop]: Abstraction has 18358 states and 24444 transitions. [2020-10-29 06:59:53,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:53,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18358 states and 24444 transitions. [2020-10-29 06:59:53,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 06:59:53,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:53,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:59:53,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:59:53,119 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash 679636076, now seen corresponding path program 1 times [2020-10-29 06:59:53,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:53,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400726540] [2020-10-29 06:59:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:54,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 06:59:54,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1332 [2020-10-29 06:59:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:54,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:59:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:59:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:55,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:55,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:59:55,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 06:59:55,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:55,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:59:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:55,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:59:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:55,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:55,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:55,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:55,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:59:55,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:55,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400726540] [2020-10-29 06:59:55,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:55,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:59:55,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311761221] [2020-10-29 06:59:55,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:59:55,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:55,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:59:55,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:55,403 INFO L87 Difference]: Start difference. First operand 18358 states and 24444 transitions. Second operand 8 states. [2020-10-29 07:00:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:21,812 INFO L93 Difference]: Finished difference Result 43753 states and 60914 transitions. [2020-10-29 07:00:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:00:21,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2020-10-29 07:00:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:21,914 INFO L225 Difference]: With dead ends: 43753 [2020-10-29 07:00:21,915 INFO L226 Difference]: Without dead ends: 26937 [2020-10-29 07:00:21,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:00:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26937 states. [2020-10-29 07:00:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26937 to 25338. [2020-10-29 07:00:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2020-10-29 07:00:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 34763 transitions. [2020-10-29 07:00:22,657 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 34763 transitions. Word has length 253 [2020-10-29 07:00:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:22,658 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 34763 transitions. [2020-10-29 07:00:22,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:00:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 34763 transitions. [2020-10-29 07:00:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 07:00:22,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:22,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:00:22,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:00:22,664 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 237287268, now seen corresponding path program 1 times [2020-10-29 07:00:22,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:22,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523702715] [2020-10-29 07:00:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 07:00:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2037 [2020-10-29 07:00:24,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:00:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:00:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:24,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:25,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:00:25,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:00:25,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:25,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:25,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:00:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:00:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:25,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:25,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:00:25,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:00:25,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:25,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:25,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:00:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:00:25,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523702715] [2020-10-29 07:00:25,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:25,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:25,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010474928] [2020-10-29 07:00:25,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:25,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:25,519 INFO L87 Difference]: Start difference. First operand 25338 states and 34763 transitions. Second operand 7 states. [2020-10-29 07:00:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:50,215 INFO L93 Difference]: Finished difference Result 61050 states and 87146 transitions. [2020-10-29 07:00:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:50,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-29 07:00:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:50,332 INFO L225 Difference]: With dead ends: 61050 [2020-10-29 07:00:50,332 INFO L226 Difference]: Without dead ends: 37254 [2020-10-29 07:00:50,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37254 states. [2020-10-29 07:00:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37254 to 36930. [2020-10-29 07:00:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36930 states. [2020-10-29 07:00:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36930 states to 36930 states and 50076 transitions. [2020-10-29 07:00:51,710 INFO L78 Accepts]: Start accepts. Automaton has 36930 states and 50076 transitions. Word has length 257 [2020-10-29 07:00:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:51,711 INFO L481 AbstractCegarLoop]: Abstraction has 36930 states and 50076 transitions. [2020-10-29 07:00:51,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 36930 states and 50076 transitions. [2020-10-29 07:00:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 07:00:51,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:51,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:00:51,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:00:51,718 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -292581356, now seen corresponding path program 1 times [2020-10-29 07:00:51,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:51,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729151827] [2020-10-29 07:00:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:00:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 07:00:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:54,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:54,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:00:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:00:54,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:54,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:00:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:00:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 07:00:54,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:54,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 07:00:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:00:55,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729151827] [2020-10-29 07:00:55,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:55,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:55,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28398629] [2020-10-29 07:00:55,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:55,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:55,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:55,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:55,326 INFO L87 Difference]: Start difference. First operand 36930 states and 50076 transitions. Second operand 7 states. [2020-10-29 07:01:00,013 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:01:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:22,654 INFO L93 Difference]: Finished difference Result 77568 states and 106459 transitions. [2020-10-29 07:01:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:01:22,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-29 07:01:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:22,825 INFO L225 Difference]: With dead ends: 77568 [2020-10-29 07:01:22,964 INFO L226 Difference]: Without dead ends: 38990 [2020-10-29 07:01:23,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:01:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38990 states. [2020-10-29 07:01:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38990 to 38611. [2020-10-29 07:01:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38611 states. [2020-10-29 07:01:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38611 states to 38611 states and 51994 transitions. [2020-10-29 07:01:24,201 INFO L78 Accepts]: Start accepts. Automaton has 38611 states and 51994 transitions. Word has length 293 [2020-10-29 07:01:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:24,201 INFO L481 AbstractCegarLoop]: Abstraction has 38611 states and 51994 transitions. [2020-10-29 07:01:24,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 38611 states and 51994 transitions. [2020-10-29 07:01:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-29 07:01:24,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:24,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:01:24,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:01:24,211 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1946485467, now seen corresponding path program 1 times [2020-10-29 07:01:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:24,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532014243] [2020-10-29 07:01:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-29 07:01:28,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3953 [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-29 07:01:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:01:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,424 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:01:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:01:28,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:01:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:01:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:01:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 07:01:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:01:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:01:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:01:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532014243] [2020-10-29 07:01:29,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:29,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:29,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014552228] [2020-10-29 07:01:29,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:29,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:29,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:29,089 INFO L87 Difference]: Start difference. First operand 38611 states and 51994 transitions. Second operand 7 states.