/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=SHALLOWEST --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/Problem16_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:00:40,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:00:40,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:00:40,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:00:40,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:00:40,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:00:40,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:00:40,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:00:40,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:00:40,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:00:40,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:00:40,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:00:40,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:00:40,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:00:40,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:00:40,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:00:40,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:00:40,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:00:40,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:00:40,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:00:40,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:00:40,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:00:40,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:00:40,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:00:40,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:00:40,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:00:40,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:00:40,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:00:40,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:00:40,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:00:40,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:00:40,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:00:40,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:00:40,410 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 [2020-10-27 00:00:40,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:00:40,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:00:40,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:00:40,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:00:40,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:00:40,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:00:40,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:00:40,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:00:40,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:00:40,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:00:40,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:00:40,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:00:40,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:00:40,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:00:40,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:00:40,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:00:40,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:00:40,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:00:40,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:00:40,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:00:40,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:00:40,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:40,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:00:40,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:00:40,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:00:40,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:00:40,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:00:40,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:00:40,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:00:40,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:00:40,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:00:40,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:00:40,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:00:40,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:00:40,992 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:00:40,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43.c [2020-10-27 00:00:41,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3c7a69e/8282bc50f6c94a98ae77469453835522/FLAGce99a733e [2020-10-27 00:00:41,890 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:00:41,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label43.c [2020-10-27 00:00:41,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3c7a69e/8282bc50f6c94a98ae77469453835522/FLAGce99a733e [2020-10-27 00:00:42,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d3c7a69e/8282bc50f6c94a98ae77469453835522 [2020-10-27 00:00:42,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:00:42,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:00:42,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:42,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:00:42,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:00:42,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:42" (1/1) ... [2020-10-27 00:00:42,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290b80f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:42, skipping insertion in model container [2020-10-27 00:00:42,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:42" (1/1) ... [2020-10-27 00:00:42,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:00:42,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:00:43,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:43,107 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:00:43,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:43,615 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:00:43,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43 WrapperNode [2020-10-27 00:00:43,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:43,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:00:43,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:00:43,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:00:43,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:00:43,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:00:43,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:00:43,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:00:43,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (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 [2020-10-27 00:00:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:00:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:00:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:00:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:00:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:00:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:00:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:00:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:00:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:00:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:00:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:00:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:00:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:00:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:00:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:00:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:00:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:00:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:00:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:00:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:00:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:00:46,626 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:00:46,627 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:00:46,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:46 BoogieIcfgContainer [2020-10-27 00:00:46,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:00:46,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:00:46,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:00:46,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:00:46,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:42" (1/3) ... [2020-10-27 00:00:46,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ded498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:46, skipping insertion in model container [2020-10-27 00:00:46,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (2/3) ... [2020-10-27 00:00:46,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ded498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:46, skipping insertion in model container [2020-10-27 00:00:46,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:46" (3/3) ... [2020-10-27 00:00:46,640 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label43.c [2020-10-27 00:00:46,656 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:00:46,663 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:00:46,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:00:46,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:00:46,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:00:46,715 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:00:46,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:00:46,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:00:46,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:00:46,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:00:46,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:00:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:00:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 00:00:46,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:46,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:46,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 401088596, now seen corresponding path program 1 times [2020-10-27 00:00:46,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:46,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748876819] [2020-10-27 00:00:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 00:00:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 00:00:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 00:00:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-27 00:00:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:47,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:00:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:47,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748876819] [2020-10-27 00:00:47,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:47,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:00:47,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064461163] [2020-10-27 00:00:47,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:00:47,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:00:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:00:47,670 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 00:00:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:54,727 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-27 00:00:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:00:54,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 00:00:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:54,756 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 00:00:54,756 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 00:00:54,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 00:00:54,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-27 00:00:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-27 00:00:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1667 transitions. [2020-10-27 00:00:54,929 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1667 transitions. Word has length 16 [2020-10-27 00:00:54,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:54,930 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1667 transitions. [2020-10-27 00:00:54,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:00:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1667 transitions. [2020-10-27 00:00:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 00:00:54,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:54,951 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:54,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:00:54,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 358648890, now seen corresponding path program 1 times [2020-10-27 00:00:54,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:54,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059362901] [2020-10-27 00:00:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:59,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 00:00:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:00:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4815 [2020-10-27 00:00:59,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 00:00:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:01:00,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:01:00,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:01:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 00:01:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:00,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:00,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:01:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:01:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:01:00,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059362901] [2020-10-27 00:01:00,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:00,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:00,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418272007] [2020-10-27 00:01:00,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:00,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:00,440 INFO L87 Difference]: Start difference. First operand 1032 states and 1667 transitions. Second operand 8 states. [2020-10-27 00:01:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:06,052 INFO L93 Difference]: Finished difference Result 2430 states and 3853 transitions. [2020-10-27 00:01:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:06,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-27 00:01:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:06,063 INFO L225 Difference]: With dead ends: 2430 [2020-10-27 00:01:06,064 INFO L226 Difference]: Without dead ends: 1404 [2020-10-27 00:01:06,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:01:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-27 00:01:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1384. [2020-10-27 00:01:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-27 00:01:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1952 transitions. [2020-10-27 00:01:06,147 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1952 transitions. Word has length 183 [2020-10-27 00:01:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:06,150 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1952 transitions. [2020-10-27 00:01:06,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1952 transitions. [2020-10-27 00:01:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 00:01:06,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:06,155 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:06,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:01:06,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:06,157 INFO L82 PathProgramCache]: Analyzing trace with hash 571495604, now seen corresponding path program 1 times [2020-10-27 00:01:06,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:06,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24119480] [2020-10-27 00:01:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 00:01:10,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-10-27 00:01:10,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:01:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 00:01:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:10,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:01:10,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:01:10,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 00:01:10,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:01:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 00:01:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:10,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:01:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:01:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:01:10,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24119480] [2020-10-27 00:01:10,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:10,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:01:10,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833730324] [2020-10-27 00:01:10,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:10,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:10,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:10,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:10,830 INFO L87 Difference]: Start difference. First operand 1384 states and 1952 transitions. Second operand 7 states. [2020-10-27 00:01:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:16,024 INFO L93 Difference]: Finished difference Result 3493 states and 5066 transitions. [2020-10-27 00:01:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:16,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-27 00:01:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:16,045 INFO L225 Difference]: With dead ends: 3493 [2020-10-27 00:01:16,046 INFO L226 Difference]: Without dead ends: 2115 [2020-10-27 00:01:16,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-10-27 00:01:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1738. [2020-10-27 00:01:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-27 00:01:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2365 transitions. [2020-10-27 00:01:16,118 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2365 transitions. Word has length 184 [2020-10-27 00:01:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:16,119 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 2365 transitions. [2020-10-27 00:01:16,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2365 transitions. [2020-10-27 00:01:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-27 00:01:16,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:16,127 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:16,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:01:16,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash 315128080, now seen corresponding path program 1 times [2020-10-27 00:01:16,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:16,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313825876] [2020-10-27 00:01:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:01:21,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:21,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 00:01:21,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:21,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:01:21,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:01:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 00:01:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:01:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 00:01:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:22,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:22,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:01:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:01:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 24 proven. 197 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-27 00:01:22,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313825876] [2020-10-27 00:01:22,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:22,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:22,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391323240] [2020-10-27 00:01:22,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:22,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:22,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:22,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:22,539 INFO L87 Difference]: Start difference. First operand 1738 states and 2365 transitions. Second operand 7 states. [2020-10-27 00:01:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:28,889 INFO L93 Difference]: Finished difference Result 4931 states and 6877 transitions. [2020-10-27 00:01:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:01:28,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-27 00:01:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:28,915 INFO L225 Difference]: With dead ends: 4931 [2020-10-27 00:01:28,916 INFO L226 Difference]: Without dead ends: 3199 [2020-10-27 00:01:28,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:01:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-10-27 00:01:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3146. [2020-10-27 00:01:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-10-27 00:01:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 3967 transitions. [2020-10-27 00:01:29,045 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 3967 transitions. Word has length 352 [2020-10-27 00:01:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:29,046 INFO L481 AbstractCegarLoop]: Abstraction has 3146 states and 3967 transitions. [2020-10-27 00:01:29,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 3967 transitions. [2020-10-27 00:01:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-27 00:01:29,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:29,058 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:29,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:01:29,058 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1119092480, now seen corresponding path program 1 times [2020-10-27 00:01:29,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:29,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398383865] [2020-10-27 00:01:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:29,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-27 00:01:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 00:01:34,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:34,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:01:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 00:01:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:34,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:34,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:01:34,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:34,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:35,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:01:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-27 00:01:35,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:01:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:01:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:01:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:36,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:01:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:36,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:01:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:01:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 24 proven. 197 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-27 00:01:36,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398383865] [2020-10-27 00:01:36,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:36,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:36,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295243038] [2020-10-27 00:01:36,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:36,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:36,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:36,848 INFO L87 Difference]: Start difference. First operand 3146 states and 3967 transitions. Second operand 8 states. [2020-10-27 00:01:36,993 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 00:01:37,180 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 00:01:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:44,186 INFO L93 Difference]: Finished difference Result 7086 states and 9027 transitions. [2020-10-27 00:01:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:01:44,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 472 [2020-10-27 00:01:44,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:44,212 INFO L225 Difference]: With dead ends: 7086 [2020-10-27 00:01:44,212 INFO L226 Difference]: Without dead ends: 3946 [2020-10-27 00:01:44,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:44,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2020-10-27 00:01:44,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3841. [2020-10-27 00:01:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2020-10-27 00:01:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4707 transitions. [2020-10-27 00:01:44,361 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4707 transitions. Word has length 472 [2020-10-27 00:01:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:44,361 INFO L481 AbstractCegarLoop]: Abstraction has 3841 states and 4707 transitions. [2020-10-27 00:01:44,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4707 transitions. [2020-10-27 00:01:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-27 00:01:44,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:44,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:44,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:01:44,380 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:44,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:44,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1221489318, now seen corresponding path program 1 times [2020-10-27 00:01:44,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:44,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355169189] [2020-10-27 00:01:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:45,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-27 00:01:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:49,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:49,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:49,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:01:49,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:49,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:01:49,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:01:49,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:49,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:01:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:01:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:01:50,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-27 00:01:50,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:01:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:01:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-27 00:01:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:50,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:50,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-27 00:01:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:50,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:50,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:50,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:01:50,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:01:50,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 128 proven. 203 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-27 00:01:51,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355169189] [2020-10-27 00:01:51,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:51,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:51,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242733922] [2020-10-27 00:01:51,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:51,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:51,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:51,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:51,576 INFO L87 Difference]: Start difference. First operand 3841 states and 4707 transitions. Second operand 8 states. [2020-10-27 00:01:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:59,270 INFO L93 Difference]: Finished difference Result 8766 states and 11187 transitions. [2020-10-27 00:01:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:01:59,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 563 [2020-10-27 00:01:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:59,294 INFO L225 Difference]: With dead ends: 8766 [2020-10-27 00:01:59,294 INFO L226 Difference]: Without dead ends: 4529 [2020-10-27 00:01:59,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:01:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2020-10-27 00:01:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4149. [2020-10-27 00:01:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4149 states. [2020-10-27 00:01:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 4561 transitions. [2020-10-27 00:01:59,420 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 4561 transitions. Word has length 563 [2020-10-27 00:01:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:59,421 INFO L481 AbstractCegarLoop]: Abstraction has 4149 states and 4561 transitions. [2020-10-27 00:01:59,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 4561 transitions. [2020-10-27 00:01:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-27 00:01:59,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:59,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:59,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:01:59,441 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1640065612, now seen corresponding path program 1 times [2020-10-27 00:01:59,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:59,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344220487] [2020-10-27 00:01:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 618 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:04,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:02:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:05,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 00:02:05,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:05,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:02:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:05,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:02:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 00:02:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 166 proven. 212 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2020-10-27 00:02:06,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344220487] [2020-10-27 00:02:06,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:06,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:06,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061330542] [2020-10-27 00:02:06,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:06,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:06,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:06,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:06,026 INFO L87 Difference]: Start difference. First operand 4149 states and 4561 transitions. Second operand 7 states. [2020-10-27 00:02:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:10,431 INFO L93 Difference]: Finished difference Result 10027 states and 11218 transitions. [2020-10-27 00:02:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:10,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-27 00:02:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:10,459 INFO L225 Difference]: With dead ends: 10027 [2020-10-27 00:02:10,459 INFO L226 Difference]: Without dead ends: 6221 [2020-10-27 00:02:10,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2020-10-27 00:02:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 5868. [2020-10-27 00:02:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5868 states. [2020-10-27 00:02:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5868 states to 5868 states and 6412 transitions. [2020-10-27 00:02:10,623 INFO L78 Accepts]: Start accepts. Automaton has 5868 states and 6412 transitions. Word has length 600 [2020-10-27 00:02:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:10,624 INFO L481 AbstractCegarLoop]: Abstraction has 5868 states and 6412 transitions. [2020-10-27 00:02:10,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5868 states and 6412 transitions. [2020-10-27 00:02:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-27 00:02:10,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:10,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:10,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:02:10,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1445125578, now seen corresponding path program 1 times [2020-10-27 00:02:10,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:10,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872795908] [2020-10-27 00:02:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-27 00:02:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:15,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-27 00:02:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:02:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:16,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:16,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:02:16,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:16,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:16,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:16,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-27 00:02:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:17,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-27 00:02:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 163 proven. 468 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-27 00:02:17,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872795908] [2020-10-27 00:02:17,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:17,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:02:17,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441249000] [2020-10-27 00:02:17,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:02:17,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:02:17,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:02:17,937 INFO L87 Difference]: Start difference. First operand 5868 states and 6412 transitions. Second operand 9 states. [2020-10-27 00:02:18,087 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:02:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:23,798 INFO L93 Difference]: Finished difference Result 14813 states and 16370 transitions. [2020-10-27 00:02:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:02:23,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 635 [2020-10-27 00:02:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:23,834 INFO L225 Difference]: With dead ends: 14813 [2020-10-27 00:02:23,834 INFO L226 Difference]: Without dead ends: 9288 [2020-10-27 00:02:23,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-27 00:02:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2020-10-27 00:02:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 8261. [2020-10-27 00:02:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8261 states. [2020-10-27 00:02:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 9001 transitions. [2020-10-27 00:02:24,060 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 9001 transitions. Word has length 635 [2020-10-27 00:02:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:24,060 INFO L481 AbstractCegarLoop]: Abstraction has 8261 states and 9001 transitions. [2020-10-27 00:02:24,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:02:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 9001 transitions. [2020-10-27 00:02:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-27 00:02:24,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:24,085 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:24,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:02:24,085 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:24,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:24,086 INFO L82 PathProgramCache]: Analyzing trace with hash -347514140, now seen corresponding path program 1 times [2020-10-27 00:02:24,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:24,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793193315] [2020-10-27 00:02:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:29,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:29,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:02:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:29,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:29,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:29,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:02:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:02:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:30,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:30,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:30,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 00:02:30,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:02:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:30,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:30,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:02:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:02:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-27 00:02:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:02:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 329 proven. 306 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2020-10-27 00:02:31,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793193315] [2020-10-27 00:02:31,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:31,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:31,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176871059] [2020-10-27 00:02:31,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:31,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:31,455 INFO L87 Difference]: Start difference. First operand 8261 states and 9001 transitions. Second operand 7 states. [2020-10-27 00:02:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:35,814 INFO L93 Difference]: Finished difference Result 16879 states and 18413 transitions. [2020-10-27 00:02:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:02:35,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-27 00:02:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:35,840 INFO L225 Difference]: With dead ends: 16879 [2020-10-27 00:02:35,840 INFO L226 Difference]: Without dead ends: 8624 [2020-10-27 00:02:35,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2020-10-27 00:02:36,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8604. [2020-10-27 00:02:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8604 states. [2020-10-27 00:02:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 9364 transitions. [2020-10-27 00:02:36,057 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 9364 transitions. Word has length 1006 [2020-10-27 00:02:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:36,059 INFO L481 AbstractCegarLoop]: Abstraction has 8604 states and 9364 transitions. [2020-10-27 00:02:36,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 9364 transitions. [2020-10-27 00:02:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-27 00:02:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:36,083 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:36,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:02:36,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:36,085 INFO L82 PathProgramCache]: Analyzing trace with hash 808366112, now seen corresponding path program 1 times [2020-10-27 00:02:36,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:36,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651494854] [2020-10-27 00:02:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:36,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-27 00:02:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-27 00:02:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:02:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:41,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:41,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:02:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:02:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:42,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:42,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:42,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:02:42,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:42,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:42,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:42,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:42,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:02:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:42,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:02:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:02:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 329 proven. 306 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-27 00:02:43,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651494854] [2020-10-27 00:02:43,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:43,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:02:43,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270598293] [2020-10-27 00:02:43,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:43,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:43,215 INFO L87 Difference]: Start difference. First operand 8604 states and 9364 transitions. Second operand 8 states. [2020-10-27 00:02:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:48,035 INFO L93 Difference]: Finished difference Result 20276 states and 22158 transitions. [2020-10-27 00:02:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:02:48,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1008 [2020-10-27 00:02:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:48,075 INFO L225 Difference]: With dead ends: 20276 [2020-10-27 00:02:48,076 INFO L226 Difference]: Without dead ends: 11678 [2020-10-27 00:02:48,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:02:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11678 states. [2020-10-27 00:02:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11678 to 11664. [2020-10-27 00:02:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11664 states. [2020-10-27 00:02:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11664 states to 11664 states and 12692 transitions. [2020-10-27 00:02:48,510 INFO L78 Accepts]: Start accepts. Automaton has 11664 states and 12692 transitions. Word has length 1008 [2020-10-27 00:02:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:48,511 INFO L481 AbstractCegarLoop]: Abstraction has 11664 states and 12692 transitions. [2020-10-27 00:02:48,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11664 states and 12692 transitions. [2020-10-27 00:02:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-27 00:02:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:48,544 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:02:48,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:02:48,545 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1441132508, now seen corresponding path program 1 times [2020-10-27 00:02:48,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:48,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153987743] [2020-10-27 00:02:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:02:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:02:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:02:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:02:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:02:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:02:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:02:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-10-27 00:02:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:54,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 819 [2020-10-27 00:02:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 280 proven. 134 refuted. 0 times theorem prover too weak. 1583 trivial. 0 not checked. [2020-10-27 00:02:55,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153987743] [2020-10-27 00:02:55,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:55,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:02:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925499081] [2020-10-27 00:02:55,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:55,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:55,315 INFO L87 Difference]: Start difference. First operand 11664 states and 12692 transitions. Second operand 8 states. [2020-10-27 00:03:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:01,255 INFO L93 Difference]: Finished difference Result 25377 states and 27745 transitions. [2020-10-27 00:03:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:03:01,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1042 [2020-10-27 00:03:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:01,326 INFO L225 Difference]: With dead ends: 25377 [2020-10-27 00:03:01,326 INFO L226 Difference]: Without dead ends: 13719 [2020-10-27 00:03:01,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:03:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13719 states. [2020-10-27 00:03:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13719 to 13707. [2020-10-27 00:03:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13707 states. [2020-10-27 00:03:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13707 states to 13707 states and 14926 transitions. [2020-10-27 00:03:01,655 INFO L78 Accepts]: Start accepts. Automaton has 13707 states and 14926 transitions. Word has length 1042 [2020-10-27 00:03:01,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:01,657 INFO L481 AbstractCegarLoop]: Abstraction has 13707 states and 14926 transitions. [2020-10-27 00:03:01,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13707 states and 14926 transitions. [2020-10-27 00:03:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2020-10-27 00:03:01,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:01,689 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:03:01,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:03:01,690 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1295800910, now seen corresponding path program 1 times [2020-10-27 00:03:01,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:01,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142701505] [2020-10-27 00:03:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-27 00:03:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:07,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:03:07,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:03:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-27 00:03:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:03:07,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:03:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-27 00:03:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:03:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:07,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:07,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-10-27 00:03:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:07,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:03:07,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 390 proven. 458 refuted. 0 times theorem prover too weak. 1214 trivial. 0 not checked. [2020-10-27 00:03:08,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142701505] [2020-10-27 00:03:08,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:08,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:08,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74219981] [2020-10-27 00:03:08,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:08,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:08,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:08,643 INFO L87 Difference]: Start difference. First operand 13707 states and 14926 transitions. Second operand 7 states. [2020-10-27 00:03:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:15,974 INFO L93 Difference]: Finished difference Result 33179 states and 36347 transitions. [2020-10-27 00:03:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:15,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1047 [2020-10-27 00:03:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:16,046 INFO L225 Difference]: With dead ends: 33179 [2020-10-27 00:03:16,047 INFO L226 Difference]: Without dead ends: 19478 [2020-10-27 00:03:16,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19478 states. [2020-10-27 00:03:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19478 to 18796. [2020-10-27 00:03:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18796 states. [2020-10-27 00:03:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18796 states to 18796 states and 20600 transitions. [2020-10-27 00:03:16,461 INFO L78 Accepts]: Start accepts. Automaton has 18796 states and 20600 transitions. Word has length 1047 [2020-10-27 00:03:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:16,462 INFO L481 AbstractCegarLoop]: Abstraction has 18796 states and 20600 transitions. [2020-10-27 00:03:16,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 18796 states and 20600 transitions. [2020-10-27 00:03:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-27 00:03:16,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:16,498 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:16,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:03:16,498 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:16,499 INFO L82 PathProgramCache]: Analyzing trace with hash 107100118, now seen corresponding path program 1 times [2020-10-27 00:03:16,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:16,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872937362] [2020-10-27 00:03:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-27 00:03:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:03:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:03:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:03:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-27 00:03:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-27 00:03:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 367 proven. 134 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-27 00:03:23,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872937362] [2020-10-27 00:03:23,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:23,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:23,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346748958] [2020-10-27 00:03:23,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:23,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:23,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:23,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:23,461 INFO L87 Difference]: Start difference. First operand 18796 states and 20600 transitions. Second operand 7 states. [2020-10-27 00:03:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:28,495 INFO L93 Difference]: Finished difference Result 37590 states and 41211 transitions. [2020-10-27 00:03:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:28,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1053 [2020-10-27 00:03:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:28,551 INFO L225 Difference]: With dead ends: 37590 [2020-10-27 00:03:28,551 INFO L226 Difference]: Without dead ends: 19137 [2020-10-27 00:03:28,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2020-10-27 00:03:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 19133. [2020-10-27 00:03:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19133 states. [2020-10-27 00:03:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19133 states to 19133 states and 20864 transitions. [2020-10-27 00:03:28,963 INFO L78 Accepts]: Start accepts. Automaton has 19133 states and 20864 transitions. Word has length 1053 [2020-10-27 00:03:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:28,964 INFO L481 AbstractCegarLoop]: Abstraction has 19133 states and 20864 transitions. [2020-10-27 00:03:28,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 19133 states and 20864 transitions. [2020-10-27 00:03:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-27 00:03:29,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:29,004 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:29,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:03:29,005 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash 358531414, now seen corresponding path program 1 times [2020-10-27 00:03:29,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:29,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409283200] [2020-10-27 00:03:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1151 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5261 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:03:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:35,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:03:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:03:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:03:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:03:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:03:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 902 [2020-10-27 00:03:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:03:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 624 proven. 182 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2020-10-27 00:03:36,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409283200] [2020-10-27 00:03:36,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:36,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322133644] [2020-10-27 00:03:36,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:36,368 INFO L87 Difference]: Start difference. First operand 19133 states and 20864 transitions. Second operand 7 states. [2020-10-27 00:03:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:44,250 INFO L93 Difference]: Finished difference Result 41998 states and 45987 transitions. [2020-10-27 00:03:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:44,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1125 [2020-10-27 00:03:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:44,322 INFO L225 Difference]: With dead ends: 41998 [2020-10-27 00:03:44,323 INFO L226 Difference]: Without dead ends: 23208 [2020-10-27 00:03:44,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2020-10-27 00:03:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 22867. [2020-10-27 00:03:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22867 states. [2020-10-27 00:03:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 24800 transitions. [2020-10-27 00:03:44,815 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 24800 transitions. Word has length 1125 [2020-10-27 00:03:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:44,816 INFO L481 AbstractCegarLoop]: Abstraction has 22867 states and 24800 transitions. [2020-10-27 00:03:44,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 24800 transitions. [2020-10-27 00:03:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2020-10-27 00:03:44,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:44,854 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:03:44,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:03:44,854 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1017443802, now seen corresponding path program 1 times [2020-10-27 00:03:44,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:44,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116053835] [2020-10-27 00:03:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:45,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1171 [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:03:50,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:03:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-27 00:03:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:03:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:03:51,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:03:51,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:03:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:03:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:03:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:03:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:03:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 00:03:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2661 backedges. 1247 proven. 19 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2020-10-27 00:03:52,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116053835] [2020-10-27 00:03:52,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:52,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:03:52,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248768800] [2020-10-27 00:03:52,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:03:52,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:03:52,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:03:52,904 INFO L87 Difference]: Start difference. First operand 22867 states and 24800 transitions. Second operand 6 states. [2020-10-27 00:03:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:57,141 INFO L93 Difference]: Finished difference Result 45493 states and 49624 transitions. [2020-10-27 00:03:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:03:57,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1147 [2020-10-27 00:03:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:57,208 INFO L225 Difference]: With dead ends: 45493 [2020-10-27 00:03:57,208 INFO L226 Difference]: Without dead ends: 22969 [2020-10-27 00:03:57,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22969 states. [2020-10-27 00:03:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22969 to 22530. [2020-10-27 00:03:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22530 states. [2020-10-27 00:03:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22530 states to 22530 states and 24127 transitions. [2020-10-27 00:03:57,735 INFO L78 Accepts]: Start accepts. Automaton has 22530 states and 24127 transitions. Word has length 1147 [2020-10-27 00:03:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:57,736 INFO L481 AbstractCegarLoop]: Abstraction has 22530 states and 24127 transitions. [2020-10-27 00:03:57,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:03:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 22530 states and 24127 transitions. [2020-10-27 00:03:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2020-10-27 00:03:57,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:57,770 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:57,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:03:57,770 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:57,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1622669520, now seen corresponding path program 1 times [2020-10-27 00:03:57,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:57,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294255185] [2020-10-27 00:03:57,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1228 [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:04:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:04:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:03,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:04:03,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:03,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:04:03,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:04:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:04:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:04:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:04:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:04:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1066 [2020-10-27 00:04:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 00:04:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3346 backedges. 524 proven. 162 refuted. 0 times theorem prover too weak. 2660 trivial. 0 not checked. [2020-10-27 00:04:04,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294255185] [2020-10-27 00:04:04,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:04,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:04,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291170882] [2020-10-27 00:04:04,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:04,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:04,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:04,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:04,881 INFO L87 Difference]: Start difference. First operand 22530 states and 24127 transitions. Second operand 7 states.