/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=DEEPEST --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/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:29:35,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:29:35,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:29:35,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:29:35,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:29:35,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:29:35,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:29:35,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:29:35,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:29:35,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:29:35,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:29:35,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:29:35,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:29:35,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:29:35,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:29:35,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:29:35,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:29:35,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:29:35,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:29:35,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:29:35,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:29:35,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:29:35,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:29:35,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:29:35,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:29:35,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:29:35,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:29:35,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:29:35,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:29:35,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:29:35,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:29:35,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:29:35,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:29:35,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:29:35,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:29:35,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:29:35,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:29:35,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:29:35,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:29:35,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:29:35,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:29:35,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:29:35,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:29:35,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:29:35,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:29:35,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:29:35,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:29:35,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:29:35,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:29:35,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:29:35,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:29:35,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:29:35,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:29:35,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:29:35,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:29:35,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:29:35,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:29:35,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:29:35,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:29:35,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:29:35,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:29:35,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:29:35,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:29:35,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:29:35,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:29:35,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:29:35,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:29:35,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:29:35,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:29:35,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:29:35,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:29:35,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:29:35,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:29:35,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:29:35,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:29:35,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:29:35,885 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:29:35,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:29:35,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0ae896d/6475dd7e05734ebc80d74f5ce60eb147/FLAG2eef6d9a9 [2020-10-28 00:29:36,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:29:36,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:29:36,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0ae896d/6475dd7e05734ebc80d74f5ce60eb147/FLAG2eef6d9a9 [2020-10-28 00:29:36,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca0ae896d/6475dd7e05734ebc80d74f5ce60eb147 [2020-10-28 00:29:36,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:29:36,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:29:36,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:29:36,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:29:36,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:29:36,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:29:36" (1/1) ... [2020-10-28 00:29:36,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c652ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:36, skipping insertion in model container [2020-10-28 00:29:36,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:29:36" (1/1) ... [2020-10-28 00:29:36,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:29:37,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:29:37,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:29:37,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:29:37,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:29:37,874 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:29:37,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37 WrapperNode [2020-10-28 00:29:37,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:29:37,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:29:37,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:29:37,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:29:37,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... [2020-10-28 00:29:37,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:29:37,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:29:37,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:29:37,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:29:37,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:29:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:29:38,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:29:38,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:29:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:29:38,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:29:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:29:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:29:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:29:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:29:38,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:29:38,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:29:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:29:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:29:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:29:38,091 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:29:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:29:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:29:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:29:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:29:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:29:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:29:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:29:39,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:29:39,605 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:29:39,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:29:39 BoogieIcfgContainer [2020-10-28 00:29:39,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:29:39,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:29:39,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:29:39,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:29:39,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:29:36" (1/3) ... [2020-10-28 00:29:39,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b374a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:29:39, skipping insertion in model container [2020-10-28 00:29:39,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:37" (2/3) ... [2020-10-28 00:29:39,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b374a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:29:39, skipping insertion in model container [2020-10-28 00:29:39,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:29:39" (3/3) ... [2020-10-28 00:29:39,624 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:29:39,635 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:29:39,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:29:39,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:29:39,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:29:39,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:29:39,690 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:29:39,690 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:29:39,690 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:29:39,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:29:39,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:29:39,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:29:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-28 00:29:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:29:39,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:39,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:39,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:39,742 INFO L82 PathProgramCache]: Analyzing trace with hash -388104051, now seen corresponding path program 1 times [2020-10-28 00:29:39,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:39,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978126546] [2020-10-28 00:29:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:29:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:29:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:29:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:29:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 00:29:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:29:45,749 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:45,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:45,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:45,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:29:45,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:45,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978126546] [2020-10-28 00:29:45,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:45,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:45,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899715887] [2020-10-28 00:29:45,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:45,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:45,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:45,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:45,934 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 4 states. [2020-10-28 00:29:46,293 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:29:48,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:48,248 INFO L93 Difference]: Finished difference Result 653 states and 1127 transitions. [2020-10-28 00:29:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:48,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:29:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:48,272 INFO L225 Difference]: With dead ends: 653 [2020-10-28 00:29:48,272 INFO L226 Difference]: Without dead ends: 529 [2020-10-28 00:29:48,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-28 00:29:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2020-10-28 00:29:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-28 00:29:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 781 transitions. [2020-10-28 00:29:48,378 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 781 transitions. Word has length 157 [2020-10-28 00:29:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:48,379 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 781 transitions. [2020-10-28 00:29:48,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 781 transitions. [2020-10-28 00:29:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:29:48,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:48,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:48,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:29:48,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1450377450, now seen corresponding path program 1 times [2020-10-28 00:29:48,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:48,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706023408] [2020-10-28 00:29:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:48,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:29:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:29:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:29:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:29:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 00:29:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:53,873 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:53,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:53,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:29:53,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:53,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:29:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:53,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706023408] [2020-10-28 00:29:53,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:53,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:53,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267042791] [2020-10-28 00:29:53,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:53,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:53,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:53,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:53,976 INFO L87 Difference]: Start difference. First operand 526 states and 781 transitions. Second operand 5 states. [2020-10-28 00:29:55,725 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:29:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:56,707 INFO L93 Difference]: Finished difference Result 1509 states and 2232 transitions. [2020-10-28 00:29:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:29:56,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 00:29:56,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:56,715 INFO L225 Difference]: With dead ends: 1509 [2020-10-28 00:29:56,715 INFO L226 Difference]: Without dead ends: 1004 [2020-10-28 00:29:56,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:29:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-28 00:29:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1001. [2020-10-28 00:29:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-28 00:29:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1470 transitions. [2020-10-28 00:29:56,839 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1470 transitions. Word has length 157 [2020-10-28 00:29:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:56,841 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1470 transitions. [2020-10-28 00:29:56,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1470 transitions. [2020-10-28 00:29:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 00:29:56,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:56,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:56,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:29:56,859 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:56,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1489476679, now seen corresponding path program 1 times [2020-10-28 00:29:56,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:56,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742195315] [2020-10-28 00:29:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 00:30:01,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:30:01,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:30:01,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 00:30:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:30:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:02,262 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:02,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:02,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:30:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:30:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:02,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742195315] [2020-10-28 00:30:02,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:02,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:02,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727716601] [2020-10-28 00:30:02,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:02,410 INFO L87 Difference]: Start difference. First operand 1001 states and 1470 transitions. Second operand 4 states. [2020-10-28 00:30:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:05,149 INFO L93 Difference]: Finished difference Result 2951 states and 4332 transitions. [2020-10-28 00:30:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:30:05,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 00:30:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:05,163 INFO L225 Difference]: With dead ends: 2951 [2020-10-28 00:30:05,163 INFO L226 Difference]: Without dead ends: 1978 [2020-10-28 00:30:05,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2020-10-28 00:30:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1003. [2020-10-28 00:30:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 00:30:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1472 transitions. [2020-10-28 00:30:05,236 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1472 transitions. Word has length 158 [2020-10-28 00:30:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:05,236 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1472 transitions. [2020-10-28 00:30:05,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1472 transitions. [2020-10-28 00:30:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:30:05,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:05,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:05,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:30:05,240 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1156684470, now seen corresponding path program 1 times [2020-10-28 00:30:05,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:05,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670347468] [2020-10-28 00:30:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:10,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:30:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:30:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:30:10,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:30:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 00:30:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:10,678 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:30:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:10,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670347468] [2020-10-28 00:30:10,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:10,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:10,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988594846] [2020-10-28 00:30:10,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:10,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:10,795 INFO L87 Difference]: Start difference. First operand 1003 states and 1472 transitions. Second operand 4 states. [2020-10-28 00:30:12,948 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:30:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:14,005 INFO L93 Difference]: Finished difference Result 2750 states and 4047 transitions. [2020-10-28 00:30:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:14,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 00:30:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:14,018 INFO L225 Difference]: With dead ends: 2750 [2020-10-28 00:30:14,018 INFO L226 Difference]: Without dead ends: 1924 [2020-10-28 00:30:14,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-10-28 00:30:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1921. [2020-10-28 00:30:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-28 00:30:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2790 transitions. [2020-10-28 00:30:14,140 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2790 transitions. Word has length 159 [2020-10-28 00:30:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:14,144 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 2790 transitions. [2020-10-28 00:30:14,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:14,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2790 transitions. [2020-10-28 00:30:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:30:14,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:14,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:14,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:30:14,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:14,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:14,150 INFO L82 PathProgramCache]: Analyzing trace with hash -241594375, now seen corresponding path program 1 times [2020-10-28 00:30:14,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:14,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34015572] [2020-10-28 00:30:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:19,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:19,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:30:19,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:30:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 00:30:19,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:30:19,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:30:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:19,627 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:19,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34015572] [2020-10-28 00:30:19,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:19,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:19,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854666875] [2020-10-28 00:30:19,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:19,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:19,695 INFO L87 Difference]: Start difference. First operand 1921 states and 2790 transitions. Second operand 5 states. [2020-10-28 00:30:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:21,299 INFO L93 Difference]: Finished difference Result 3230 states and 4710 transitions. [2020-10-28 00:30:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:21,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 00:30:21,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:21,307 INFO L225 Difference]: With dead ends: 3230 [2020-10-28 00:30:21,308 INFO L226 Difference]: Without dead ends: 1474 [2020-10-28 00:30:21,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:30:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-10-28 00:30:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2020-10-28 00:30:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-10-28 00:30:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2135 transitions. [2020-10-28 00:30:21,398 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2135 transitions. Word has length 159 [2020-10-28 00:30:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:21,398 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2135 transitions. [2020-10-28 00:30:21,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2135 transitions. [2020-10-28 00:30:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 00:30:21,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:21,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:21,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:30:21,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash -128273501, now seen corresponding path program 1 times [2020-10-28 00:30:21,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:21,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404148843] [2020-10-28 00:30:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 00:30:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:26,749 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:26,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:26,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404148843] [2020-10-28 00:30:26,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:26,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:26,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032050364] [2020-10-28 00:30:26,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:26,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:26,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:26,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:26,843 INFO L87 Difference]: Start difference. First operand 1474 states and 2135 transitions. Second operand 4 states. [2020-10-28 00:30:29,007 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:30:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:29,266 INFO L93 Difference]: Finished difference Result 3470 states and 5133 transitions. [2020-10-28 00:30:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:29,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-28 00:30:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:29,278 INFO L225 Difference]: With dead ends: 3470 [2020-10-28 00:30:29,278 INFO L226 Difference]: Without dead ends: 2211 [2020-10-28 00:30:29,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2020-10-28 00:30:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1916. [2020-10-28 00:30:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-10-28 00:30:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2853 transitions. [2020-10-28 00:30:29,396 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2853 transitions. Word has length 161 [2020-10-28 00:30:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:29,397 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2853 transitions. [2020-10-28 00:30:29,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2853 transitions. [2020-10-28 00:30:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 00:30:29,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:29,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:30:29,401 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1582863569, now seen corresponding path program 1 times [2020-10-28 00:30:29,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:29,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376169778] [2020-10-28 00:30:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 00:30:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:34,763 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:34,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376169778] [2020-10-28 00:30:34,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:34,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:34,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114167668] [2020-10-28 00:30:34,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:34,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:34,826 INFO L87 Difference]: Start difference. First operand 1916 states and 2853 transitions. Second operand 4 states. [2020-10-28 00:30:36,858 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:30:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:37,287 INFO L93 Difference]: Finished difference Result 4670 states and 7114 transitions. [2020-10-28 00:30:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:37,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-28 00:30:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:37,302 INFO L225 Difference]: With dead ends: 4670 [2020-10-28 00:30:37,302 INFO L226 Difference]: Without dead ends: 3009 [2020-10-28 00:30:37,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-10-28 00:30:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 2692. [2020-10-28 00:30:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2020-10-28 00:30:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4116 transitions. [2020-10-28 00:30:37,460 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4116 transitions. Word has length 163 [2020-10-28 00:30:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:37,460 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 4116 transitions. [2020-10-28 00:30:37,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4116 transitions. [2020-10-28 00:30:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 00:30:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:37,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:37,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:30:37,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:37,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2083262247, now seen corresponding path program 1 times [2020-10-28 00:30:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:37,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033162333] [2020-10-28 00:30:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 00:30:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:42,878 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:42,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:42,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:42,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:30:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:30:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:43,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033162333] [2020-10-28 00:30:43,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:43,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:30:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120027736] [2020-10-28 00:30:43,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:30:43,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:43,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:30:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:30:43,010 INFO L87 Difference]: Start difference. First operand 2692 states and 4116 transitions. Second operand 6 states. [2020-10-28 00:30:43,309 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:30:45,014 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:30:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:46,152 INFO L93 Difference]: Finished difference Result 7005 states and 10975 transitions. [2020-10-28 00:30:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:30:46,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-28 00:30:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:46,177 INFO L225 Difference]: With dead ends: 7005 [2020-10-28 00:30:46,178 INFO L226 Difference]: Without dead ends: 5068 [2020-10-28 00:30:46,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:30:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2020-10-28 00:30:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 5065. [2020-10-28 00:30:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5065 states. [2020-10-28 00:30:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 7770 transitions. [2020-10-28 00:30:46,503 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 7770 transitions. Word has length 164 [2020-10-28 00:30:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:46,503 INFO L481 AbstractCegarLoop]: Abstraction has 5065 states and 7770 transitions. [2020-10-28 00:30:46,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:30:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 7770 transitions. [2020-10-28 00:30:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 00:30:46,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:46,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:46,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:30:46,510 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:46,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1124871080, now seen corresponding path program 1 times [2020-10-28 00:30:46,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:46,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770831813] [2020-10-28 00:30:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 00:30:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:51,922 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:51,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:51,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770831813] [2020-10-28 00:30:51,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:51,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:51,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096705916] [2020-10-28 00:30:51,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:51,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:51,983 INFO L87 Difference]: Start difference. First operand 5065 states and 7770 transitions. Second operand 5 states. [2020-10-28 00:30:53,826 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:55,098 INFO L93 Difference]: Finished difference Result 14864 states and 22763 transitions. [2020-10-28 00:30:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:30:55,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 00:30:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:55,143 INFO L225 Difference]: With dead ends: 14864 [2020-10-28 00:30:55,144 INFO L226 Difference]: Without dead ends: 9810 [2020-10-28 00:30:55,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2020-10-28 00:30:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9807. [2020-10-28 00:30:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9807 states. [2020-10-28 00:30:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 14910 transitions. [2020-10-28 00:30:55,743 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 14910 transitions. Word has length 164 [2020-10-28 00:30:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:55,744 INFO L481 AbstractCegarLoop]: Abstraction has 9807 states and 14910 transitions. [2020-10-28 00:30:55,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 14910 transitions. [2020-10-28 00:30:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 00:30:55,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:55,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:55,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:30:55,754 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:55,754 INFO L82 PathProgramCache]: Analyzing trace with hash 346275192, now seen corresponding path program 1 times [2020-10-28 00:30:55,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:55,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650338987] [2020-10-28 00:30:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:31:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:01,111 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:01,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:01,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650338987] [2020-10-28 00:31:01,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:01,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:31:01,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330650920] [2020-10-28 00:31:01,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:31:01,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:01,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:31:01,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:01,160 INFO L87 Difference]: Start difference. First operand 9807 states and 14910 transitions. Second operand 5 states. [2020-10-28 00:31:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:02,947 INFO L93 Difference]: Finished difference Result 19538 states and 29724 transitions. [2020-10-28 00:31:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:02,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 00:31:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:02,975 INFO L225 Difference]: With dead ends: 19538 [2020-10-28 00:31:02,976 INFO L226 Difference]: Without dead ends: 9807 [2020-10-28 00:31:02,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:31:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2020-10-28 00:31:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 9807. [2020-10-28 00:31:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9807 states. [2020-10-28 00:31:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 14908 transitions. [2020-10-28 00:31:03,479 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 14908 transitions. Word has length 165 [2020-10-28 00:31:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:03,479 INFO L481 AbstractCegarLoop]: Abstraction has 9807 states and 14908 transitions. [2020-10-28 00:31:03,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:31:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 14908 transitions. [2020-10-28 00:31:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 00:31:03,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:03,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:03,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:31:03,488 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:03,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1711514070, now seen corresponding path program 1 times [2020-10-28 00:31:03,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:03,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085098898] [2020-10-28 00:31:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 00:31:08,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:08,811 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:08,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:08,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:08,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:31:08,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085098898] [2020-10-28 00:31:08,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:08,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:08,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120796114] [2020-10-28 00:31:08,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:08,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:08,879 INFO L87 Difference]: Start difference. First operand 9807 states and 14908 transitions. Second operand 4 states. [2020-10-28 00:31:10,916 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:12,154 INFO L93 Difference]: Finished difference Result 23402 states and 35616 transitions. [2020-10-28 00:31:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:12,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-28 00:31:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:12,189 INFO L225 Difference]: With dead ends: 23402 [2020-10-28 00:31:12,189 INFO L226 Difference]: Without dead ends: 14023 [2020-10-28 00:31:12,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2020-10-28 00:31:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 14020. [2020-10-28 00:31:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14020 states. [2020-10-28 00:31:12,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14020 states to 14020 states and 21012 transitions. [2020-10-28 00:31:12,976 INFO L78 Accepts]: Start accepts. Automaton has 14020 states and 21012 transitions. Word has length 166 [2020-10-28 00:31:12,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:12,977 INFO L481 AbstractCegarLoop]: Abstraction has 14020 states and 21012 transitions. [2020-10-28 00:31:12,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14020 states and 21012 transitions. [2020-10-28 00:31:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:31:12,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:12,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:12,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:31:12,988 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash 924840650, now seen corresponding path program 1 times [2020-10-28 00:31:12,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:12,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403523188] [2020-10-28 00:31:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:31:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:31:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:31:18,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:31:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 00:31:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:18,399 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:31:18,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:18,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403523188] [2020-10-28 00:31:18,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:18,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:18,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711699906] [2020-10-28 00:31:18,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:18,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:18,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:18,438 INFO L87 Difference]: Start difference. First operand 14020 states and 21012 transitions. Second operand 4 states. [2020-10-28 00:31:20,612 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:21,162 INFO L93 Difference]: Finished difference Result 35800 states and 54793 transitions. [2020-10-28 00:31:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:21,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-10-28 00:31:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:21,219 INFO L225 Difference]: With dead ends: 35800 [2020-10-28 00:31:21,219 INFO L226 Difference]: Without dead ends: 22203 [2020-10-28 00:31:21,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22203 states. [2020-10-28 00:31:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22203 to 21336. [2020-10-28 00:31:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21336 states. [2020-10-28 00:31:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21336 states to 21336 states and 32780 transitions. [2020-10-28 00:31:22,453 INFO L78 Accepts]: Start accepts. Automaton has 21336 states and 32780 transitions. Word has length 167 [2020-10-28 00:31:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:22,454 INFO L481 AbstractCegarLoop]: Abstraction has 21336 states and 32780 transitions. [2020-10-28 00:31:22,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 21336 states and 32780 transitions. [2020-10-28 00:31:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 00:31:22,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:22,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:22,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:31:22,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1442538025, now seen corresponding path program 1 times [2020-10-28 00:31:22,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:22,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253792156] [2020-10-28 00:31:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:31:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 00:31:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 00:31:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:27,839 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:27,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253792156] [2020-10-28 00:31:27,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:31:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027845256] [2020-10-28 00:31:27,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:31:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:31:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:31:27,894 INFO L87 Difference]: Start difference. First operand 21336 states and 32780 transitions. Second operand 6 states. [2020-10-28 00:31:28,201 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 00:31:29,539 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:31:30,096 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:33,063 INFO L93 Difference]: Finished difference Result 68816 states and 107709 transitions. [2020-10-28 00:31:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 00:31:33,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-28 00:31:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:33,191 INFO L225 Difference]: With dead ends: 68816 [2020-10-28 00:31:33,191 INFO L226 Difference]: Without dead ends: 52004 [2020-10-28 00:31:33,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:31:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52004 states. [2020-10-28 00:31:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52004 to 51726. [2020-10-28 00:31:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51726 states. [2020-10-28 00:31:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51726 states to 51726 states and 79921 transitions. [2020-10-28 00:31:36,324 INFO L78 Accepts]: Start accepts. Automaton has 51726 states and 79921 transitions. Word has length 170 [2020-10-28 00:31:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:36,324 INFO L481 AbstractCegarLoop]: Abstraction has 51726 states and 79921 transitions. [2020-10-28 00:31:36,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:31:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 51726 states and 79921 transitions. [2020-10-28 00:31:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 00:31:36,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:36,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:36,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:31:36,481 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:36,482 INFO L82 PathProgramCache]: Analyzing trace with hash 395943476, now seen corresponding path program 1 times [2020-10-28 00:31:36,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:36,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773261760] [2020-10-28 00:31:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:41,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:41,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 00:31:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:31:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:31:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:31:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:31:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 00:31:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:41,855 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:41,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773261760] [2020-10-28 00:31:41,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:41,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:31:41,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427553953] [2020-10-28 00:31:41,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:31:41,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:41,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:31:41,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:41,907 INFO L87 Difference]: Start difference. First operand 51726 states and 79921 transitions. Second operand 5 states. [2020-10-28 00:31:42,204 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:31:43,926 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:31:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:48,388 INFO L93 Difference]: Finished difference Result 123321 states and 192237 transitions. [2020-10-28 00:31:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:31:48,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 00:31:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:48,523 INFO L225 Difference]: With dead ends: 123321 [2020-10-28 00:31:48,524 INFO L226 Difference]: Without dead ends: 75912 [2020-10-28 00:31:48,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:31:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75912 states. [2020-10-28 00:31:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75912 to 75906. [2020-10-28 00:31:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75906 states. [2020-10-28 00:31:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75906 states to 75906 states and 117587 transitions. [2020-10-28 00:31:53,167 INFO L78 Accepts]: Start accepts. Automaton has 75906 states and 117587 transitions. Word has length 170 [2020-10-28 00:31:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:53,167 INFO L481 AbstractCegarLoop]: Abstraction has 75906 states and 117587 transitions. [2020-10-28 00:31:53,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:31:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 75906 states and 117587 transitions. [2020-10-28 00:31:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 00:31:53,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:53,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:53,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:31:53,176 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash 243855847, now seen corresponding path program 1 times [2020-10-28 00:31:53,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:53,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629422235] [2020-10-28 00:31:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 00:31:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:58,565 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:58,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:31:58,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629422235] [2020-10-28 00:31:58,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:58,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:31:58,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437416385] [2020-10-28 00:31:58,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:31:58,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:31:58,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:58,653 INFO L87 Difference]: Start difference. First operand 75906 states and 117587 transitions. Second operand 5 states. [2020-10-28 00:32:00,974 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:32:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:10,249 INFO L93 Difference]: Finished difference Result 211917 states and 327963 transitions. [2020-10-28 00:32:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:32:10,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 00:32:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:10,604 INFO L225 Difference]: With dead ends: 211917 [2020-10-28 00:32:10,604 INFO L226 Difference]: Without dead ends: 136697 [2020-10-28 00:32:10,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:32:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136697 states. [2020-10-28 00:32:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136697 to 136694. [2020-10-28 00:32:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136694 states. [2020-10-28 00:32:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136694 states to 136694 states and 209216 transitions. [2020-10-28 00:32:20,419 INFO L78 Accepts]: Start accepts. Automaton has 136694 states and 209216 transitions. Word has length 170 [2020-10-28 00:32:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:32:20,422 INFO L481 AbstractCegarLoop]: Abstraction has 136694 states and 209216 transitions. [2020-10-28 00:32:20,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:32:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136694 states and 209216 transitions. [2020-10-28 00:32:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 00:32:20,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:32:20,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:32:20,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:32:20,438 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:32:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:32:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1826828347, now seen corresponding path program 1 times [2020-10-28 00:32:20,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:32:20,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216761221] [2020-10-28 00:32:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:32:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:25,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 00:32:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:32:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:32:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:32:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:32:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:32:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:25,823 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:32:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:32:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:32:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:32:25,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216761221] [2020-10-28 00:32:25,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:32:25,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:32:25,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268887929] [2020-10-28 00:32:25,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:32:25,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:32:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:32:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:32:25,884 INFO L87 Difference]: Start difference. First operand 136694 states and 209216 transitions. Second operand 5 states. [2020-10-28 00:32:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:36,444 INFO L93 Difference]: Finished difference Result 273230 states and 418184 transitions. [2020-10-28 00:32:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:32:36,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 00:32:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:36,704 INFO L225 Difference]: With dead ends: 273230 [2020-10-28 00:32:36,705 INFO L226 Difference]: Without dead ends: 136694 [2020-10-28 00:32:36,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:32:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136694 states. [2020-10-28 00:32:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136694 to 136694. [2020-10-28 00:32:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136694 states. [2020-10-28 00:32:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136694 states to 136694 states and 209184 transitions. [2020-10-28 00:32:46,368 INFO L78 Accepts]: Start accepts. Automaton has 136694 states and 209184 transitions. Word has length 171 [2020-10-28 00:32:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:32:46,368 INFO L481 AbstractCegarLoop]: Abstraction has 136694 states and 209184 transitions. [2020-10-28 00:32:46,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:32:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 136694 states and 209184 transitions. [2020-10-28 00:32:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 00:32:46,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:32:46,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:32:46,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:32:46,382 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:32:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:32:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1102521265, now seen corresponding path program 1 times [2020-10-28 00:32:46,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:32:46,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606461329] [2020-10-28 00:32:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:32:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:47,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:51,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 00:32:51,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:32:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:32:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:32:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:32:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:32:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:51,730 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:32:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:32:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:51,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:51,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:32:51,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:32:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:32:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:32:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:32:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:32:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:32:51,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606461329] [2020-10-28 00:32:51,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:32:51,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:32:51,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379636334] [2020-10-28 00:32:51,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:32:51,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:32:51,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:32:51,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:32:51,774 INFO L87 Difference]: Start difference. First operand 136694 states and 209184 transitions. Second operand 4 states. [2020-10-28 00:32:54,289 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210