/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:54,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:54,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:54,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:54,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:54,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:54,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:54,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:54,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:54,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:54,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:54,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:54,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:54,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:54,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:54,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:54,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:54,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:54,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:54,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:54,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:54,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:54,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:54,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:54,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:54,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:54,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:54,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:54,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:54,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:54,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:54,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:54,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:54,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:54,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:54,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:54,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:54,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:54,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:54,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:54,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:54,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:55:54,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:54,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:54,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:54,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:54,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:54,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:54,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:54,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:54,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:54,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:54,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:54,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:54,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:54,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:54,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:54,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:54,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:54,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:54,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:54,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:54,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:54,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:54,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:54,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:54,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:54,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:54,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:54,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:54,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:54,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:55,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:55,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:55,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:55,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:55,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:55,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:55,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6170d57b/0696e9b86f694f16b79137d8298de2a3/FLAG6cce07f14 [2020-10-29 12:55:56,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:55:56,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:56,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6170d57b/0696e9b86f694f16b79137d8298de2a3/FLAG6cce07f14 [2020-10-29 12:55:56,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6170d57b/0696e9b86f694f16b79137d8298de2a3 [2020-10-29 12:55:56,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:55:56,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:55:56,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:56,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:55:56,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:55:56,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:56" (1/1) ... [2020-10-29 12:55:56,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b381535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:56, skipping insertion in model container [2020-10-29 12:55:56,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:56" (1/1) ... [2020-10-29 12:55:56,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:55:56,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:55:57,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:57,070 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:55:57,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:57,436 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:55:57,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57 WrapperNode [2020-10-29 12:55:57,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:57,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:55:57,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:55:57,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:55:57,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... [2020-10-29 12:55:57,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:55:57,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:55:57,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:55:57,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:55:57,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:55:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:55:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:55:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:55:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:55:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:55:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:55:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:55:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:55:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:55:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:55:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:55:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:55:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:55:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:55:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:55:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:55:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:55:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:55:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:55:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:55:59,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:55:59,123 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:55:59,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:59 BoogieIcfgContainer [2020-10-29 12:55:59,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:55:59,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:55:59,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:55:59,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:55:59,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:55:56" (1/3) ... [2020-10-29 12:55:59,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b17290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:59, skipping insertion in model container [2020-10-29 12:55:59,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:57" (2/3) ... [2020-10-29 12:55:59,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b17290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:59, skipping insertion in model container [2020-10-29 12:55:59,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:59" (3/3) ... [2020-10-29 12:55:59,135 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:59,147 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:55:59,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:55:59,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:55:59,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:55:59,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:55:59,215 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:55:59,215 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:55:59,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:55:59,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:55:59,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:55:59,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:55:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-10-29 12:55:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:55:59,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:59,261 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] [2020-10-29 12:55:59,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:59,268 INFO L82 PathProgramCache]: Analyzing trace with hash 255437413, now seen corresponding path program 1 times [2020-10-29 12:55:59,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:59,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445486709] [2020-10-29 12:55:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:59,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:04,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 12:56:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 12:56:04,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:04,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:04,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 12:56:04,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:56:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:56:05,195 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:05,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:05,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:05,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:56:05,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:05,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:05,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:05,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445486709] [2020-10-29 12:56:05,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:05,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:56:05,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119650306] [2020-10-29 12:56:05,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:56:05,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:05,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:56:05,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:56:05,377 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 4 states. [2020-10-29 12:56:05,758 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:56:07,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:07,615 INFO L93 Difference]: Finished difference Result 611 states and 1066 transitions. [2020-10-29 12:56:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:07,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-29 12:56:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:07,644 INFO L225 Difference]: With dead ends: 611 [2020-10-29 12:56:07,644 INFO L226 Difference]: Without dead ends: 495 [2020-10-29 12:56:07,655 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 [2020-10-29 12:56:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-29 12:56:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-29 12:56:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-29 12:56:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 731 transitions. [2020-10-29 12:56:07,772 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 731 transitions. Word has length 149 [2020-10-29 12:56:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:07,773 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 731 transitions. [2020-10-29 12:56:07,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:56:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 731 transitions. [2020-10-29 12:56:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:56:07,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:07,781 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] [2020-10-29 12:56:07,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:56:07,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1397685933, now seen corresponding path program 1 times [2020-10-29 12:56:07,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:07,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62421503] [2020-10-29 12:56:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 12:56:12,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 12:56:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:12,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:56:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 12:56:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:13,335 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:56:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:13,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62421503] [2020-10-29 12:56:13,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:13,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:56:13,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427140531] [2020-10-29 12:56:13,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:56:13,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:13,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:56:13,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:56:13,416 INFO L87 Difference]: Start difference. First operand 492 states and 731 transitions. Second operand 4 states. [2020-10-29 12:56:13,854 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:56:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:15,408 INFO L93 Difference]: Finished difference Result 1036 states and 1584 transitions. [2020-10-29 12:56:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:15,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-29 12:56:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:15,421 INFO L225 Difference]: With dead ends: 1036 [2020-10-29 12:56:15,422 INFO L226 Difference]: Without dead ends: 853 [2020-10-29 12:56:15,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-29 12:56:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 850. [2020-10-29 12:56:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-29 12:56:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1275 transitions. [2020-10-29 12:56:15,517 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1275 transitions. Word has length 149 [2020-10-29 12:56:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:15,519 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1275 transitions. [2020-10-29 12:56:15,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:56:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1275 transitions. [2020-10-29 12:56:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:56:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:15,530 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] [2020-10-29 12:56:15,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:56:15,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:15,534 INFO L82 PathProgramCache]: Analyzing trace with hash 872619772, now seen corresponding path program 1 times [2020-10-29 12:56:15,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:15,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127376087] [2020-10-29 12:56:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:17,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:19,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 12:56:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:56:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:56:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:20,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:56:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-29 12:56:21,292 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:21,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127376087] [2020-10-29 12:56:21,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:21,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:21,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46866104] [2020-10-29 12:56:21,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:21,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:21,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:21,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:21,398 INFO L87 Difference]: Start difference. First operand 850 states and 1275 transitions. Second operand 5 states. [2020-10-29 12:56:23,772 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:56:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:24,933 INFO L93 Difference]: Finished difference Result 2395 states and 3600 transitions. [2020-10-29 12:56:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:24,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 12:56:24,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:24,949 INFO L225 Difference]: With dead ends: 2395 [2020-10-29 12:56:24,949 INFO L226 Difference]: Without dead ends: 1637 [2020-10-29 12:56:24,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-10-29 12:56:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1634. [2020-10-29 12:56:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2020-10-29 12:56:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2430 transitions. [2020-10-29 12:56:25,075 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2430 transitions. Word has length 149 [2020-10-29 12:56:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:25,076 INFO L481 AbstractCegarLoop]: Abstraction has 1634 states and 2430 transitions. [2020-10-29 12:56:25,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2430 transitions. [2020-10-29 12:56:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 12:56:25,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:25,080 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] [2020-10-29 12:56:25,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:56:25,081 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:25,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1501656393, now seen corresponding path program 1 times [2020-10-29 12:56:25,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:25,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829723992] [2020-10-29 12:56:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:30,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:30,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 12:56:30,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 12:56:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 12:56:30,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:30,635 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:30,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:56:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:30,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829723992] [2020-10-29 12:56:30,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:30,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:30,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078300854] [2020-10-29 12:56:30,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:30,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:30,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:30,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:30,761 INFO L87 Difference]: Start difference. First operand 1634 states and 2430 transitions. Second operand 5 states. [2020-10-29 12:56:33,115 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:56:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:34,105 INFO L93 Difference]: Finished difference Result 4785 states and 7105 transitions. [2020-10-29 12:56:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:34,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 12:56:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:34,124 INFO L225 Difference]: With dead ends: 4785 [2020-10-29 12:56:34,125 INFO L226 Difference]: Without dead ends: 3164 [2020-10-29 12:56:34,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2020-10-29 12:56:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3161. [2020-10-29 12:56:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-10-29 12:56:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4654 transitions. [2020-10-29 12:56:34,321 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4654 transitions. Word has length 150 [2020-10-29 12:56:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:34,322 INFO L481 AbstractCegarLoop]: Abstraction has 3161 states and 4654 transitions. [2020-10-29 12:56:34,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4654 transitions. [2020-10-29 12:56:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 12:56:34,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:34,328 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] [2020-10-29 12:56:34,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:56:34,329 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1456133336, now seen corresponding path program 1 times [2020-10-29 12:56:34,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:34,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541716513] [2020-10-29 12:56:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:39,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 12:56:39,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:56:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 12:56:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:39,864 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:39,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541716513] [2020-10-29 12:56:39,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:39,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:39,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061935299] [2020-10-29 12:56:39,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:39,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:39,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:39,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:39,970 INFO L87 Difference]: Start difference. First operand 3161 states and 4654 transitions. Second operand 5 states. [2020-10-29 12:56:42,503 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:56:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:43,660 INFO L93 Difference]: Finished difference Result 8335 states and 12274 transitions. [2020-10-29 12:56:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:43,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 12:56:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:43,691 INFO L225 Difference]: With dead ends: 8335 [2020-10-29 12:56:43,691 INFO L226 Difference]: Without dead ends: 5500 [2020-10-29 12:56:43,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5500 states. [2020-10-29 12:56:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5500 to 5497. [2020-10-29 12:56:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-10-29 12:56:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 7976 transitions. [2020-10-29 12:56:44,133 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 7976 transitions. Word has length 151 [2020-10-29 12:56:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:44,134 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 7976 transitions. [2020-10-29 12:56:44,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 7976 transitions. [2020-10-29 12:56:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 12:56:44,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:44,143 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] [2020-10-29 12:56:44,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:56:44,144 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash 391292218, now seen corresponding path program 1 times [2020-10-29 12:56:44,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:44,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196427502] [2020-10-29 12:56:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 12:56:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:56:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:56:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:49,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:56:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:49,702 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:49,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:49,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:49,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196427502] [2020-10-29 12:56:49,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:49,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:49,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263441532] [2020-10-29 12:56:49,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:49,801 INFO L87 Difference]: Start difference. First operand 5497 states and 7976 transitions. Second operand 5 states. [2020-10-29 12:56:52,456 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:56:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:53,772 INFO L93 Difference]: Finished difference Result 15543 states and 22560 transitions. [2020-10-29 12:56:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:53,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 12:56:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:53,822 INFO L225 Difference]: With dead ends: 15543 [2020-10-29 12:56:53,823 INFO L226 Difference]: Without dead ends: 10594 [2020-10-29 12:56:53,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10594 states. [2020-10-29 12:56:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10594 to 10591. [2020-10-29 12:56:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10591 states. [2020-10-29 12:56:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10591 states to 10591 states and 15150 transitions. [2020-10-29 12:56:54,850 INFO L78 Accepts]: Start accepts. Automaton has 10591 states and 15150 transitions. Word has length 152 [2020-10-29 12:56:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:54,850 INFO L481 AbstractCegarLoop]: Abstraction has 10591 states and 15150 transitions. [2020-10-29 12:56:54,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10591 states and 15150 transitions. [2020-10-29 12:56:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 12:56:54,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:54,870 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] [2020-10-29 12:56:54,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:56:54,871 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash 958282936, now seen corresponding path program 1 times [2020-10-29 12:56:54,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:54,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479038675] [2020-10-29 12:56:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 12:56:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:00,376 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:00,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:00,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:00,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479038675] [2020-10-29 12:57:00,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:00,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:00,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107902876] [2020-10-29 12:57:00,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:00,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:00,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:00,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:00,442 INFO L87 Difference]: Start difference. First operand 10591 states and 15150 transitions. Second operand 5 states. [2020-10-29 12:57:03,292 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:57:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:04,648 INFO L93 Difference]: Finished difference Result 30851 states and 43998 transitions. [2020-10-29 12:57:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:04,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 12:57:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:04,703 INFO L225 Difference]: With dead ends: 30851 [2020-10-29 12:57:04,703 INFO L226 Difference]: Without dead ends: 20470 [2020-10-29 12:57:04,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20470 states. [2020-10-29 12:57:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20470 to 20467. [2020-10-29 12:57:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20467 states. [2020-10-29 12:57:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 28884 transitions. [2020-10-29 12:57:06,023 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 28884 transitions. Word has length 153 [2020-10-29 12:57:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:06,023 INFO L481 AbstractCegarLoop]: Abstraction has 20467 states and 28884 transitions. [2020-10-29 12:57:06,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 28884 transitions. [2020-10-29 12:57:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 12:57:06,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:06,057 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] [2020-10-29 12:57:06,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:57:06,057 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:06,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1057370809, now seen corresponding path program 1 times [2020-10-29 12:57:06,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:06,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168327579] [2020-10-29 12:57:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:11,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:57:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:57:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:11,517 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:11,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168327579] [2020-10-29 12:57:11,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:11,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:11,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813561227] [2020-10-29 12:57:11,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:11,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:11,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:11,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:11,684 INFO L87 Difference]: Start difference. First operand 20467 states and 28884 transitions. Second operand 5 states. [2020-10-29 12:57:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:13,920 INFO L93 Difference]: Finished difference Result 33824 states and 47630 transitions. [2020-10-29 12:57:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:13,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 12:57:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:13,950 INFO L225 Difference]: With dead ends: 33824 [2020-10-29 12:57:13,951 INFO L226 Difference]: Without dead ends: 13573 [2020-10-29 12:57:13,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13573 states. [2020-10-29 12:57:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13573 to 13549. [2020-10-29 12:57:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13549 states. [2020-10-29 12:57:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 19046 transitions. [2020-10-29 12:57:15,141 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 19046 transitions. Word has length 154 [2020-10-29 12:57:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:15,142 INFO L481 AbstractCegarLoop]: Abstraction has 13549 states and 19046 transitions. [2020-10-29 12:57:15,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 19046 transitions. [2020-10-29 12:57:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 12:57:15,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:15,159 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] [2020-10-29 12:57:15,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:57:15,160 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash -162109275, now seen corresponding path program 1 times [2020-10-29 12:57:15,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:15,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376917151] [2020-10-29 12:57:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:20,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:20,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 12:57:20,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:57:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:57:20,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:20,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 12:57:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:20,667 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:20,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:20,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376917151] [2020-10-29 12:57:20,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:20,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:20,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929660028] [2020-10-29 12:57:20,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:20,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:20,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:20,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:20,737 INFO L87 Difference]: Start difference. First operand 13549 states and 19046 transitions. Second operand 5 states. [2020-10-29 12:57:21,154 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:57:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:24,706 INFO L93 Difference]: Finished difference Result 24565 states and 34354 transitions. [2020-10-29 12:57:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:57:24,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-29 12:57:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:24,728 INFO L225 Difference]: With dead ends: 24565 [2020-10-29 12:57:24,728 INFO L226 Difference]: Without dead ends: 13572 [2020-10-29 12:57:24,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13572 states. [2020-10-29 12:57:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13572 to 13549. [2020-10-29 12:57:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13549 states. [2020-10-29 12:57:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 18946 transitions. [2020-10-29 12:57:25,744 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 18946 transitions. Word has length 161 [2020-10-29 12:57:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:25,744 INFO L481 AbstractCegarLoop]: Abstraction has 13549 states and 18946 transitions. [2020-10-29 12:57:25,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 18946 transitions. [2020-10-29 12:57:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 12:57:25,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:25,759 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] [2020-10-29 12:57:25,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:57:25,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:25,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:25,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1368141559, now seen corresponding path program 1 times [2020-10-29 12:57:25,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:25,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933668045] [2020-10-29 12:57:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:25,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:30,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:57:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:31,348 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:31,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:31,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933668045] [2020-10-29 12:57:31,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:31,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:31,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793597749] [2020-10-29 12:57:31,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:31,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:31,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:31,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:31,414 INFO L87 Difference]: Start difference. First operand 13549 states and 18946 transitions. Second operand 5 states. [2020-10-29 12:57:34,601 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:57:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:36,445 INFO L93 Difference]: Finished difference Result 36581 states and 50947 transitions. [2020-10-29 12:57:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:36,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-29 12:57:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:36,472 INFO L225 Difference]: With dead ends: 36581 [2020-10-29 12:57:36,472 INFO L226 Difference]: Without dead ends: 23520 [2020-10-29 12:57:36,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:57:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23520 states. [2020-10-29 12:57:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23520 to 23517. [2020-10-29 12:57:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23517 states. [2020-10-29 12:57:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23517 states to 23517 states and 32257 transitions. [2020-10-29 12:57:38,215 INFO L78 Accepts]: Start accepts. Automaton has 23517 states and 32257 transitions. Word has length 162 [2020-10-29 12:57:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:38,215 INFO L481 AbstractCegarLoop]: Abstraction has 23517 states and 32257 transitions. [2020-10-29 12:57:38,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 23517 states and 32257 transitions. [2020-10-29 12:57:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 12:57:38,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:38,236 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] [2020-10-29 12:57:38,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:57:38,236 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 53747977, now seen corresponding path program 1 times [2020-10-29 12:57:38,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:38,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093485986] [2020-10-29 12:57:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:43,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:57:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:43,736 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:43,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:43,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:43,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:43,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093485986] [2020-10-29 12:57:43,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:43,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:43,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686442376] [2020-10-29 12:57:43,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:43,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:43,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:43,801 INFO L87 Difference]: Start difference. First operand 23517 states and 32257 transitions. Second operand 5 states. [2020-10-29 12:57:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:46,561 INFO L93 Difference]: Finished difference Result 40604 states and 55762 transitions. [2020-10-29 12:57:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:46,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-29 12:57:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:46,581 INFO L225 Difference]: With dead ends: 40604 [2020-10-29 12:57:46,581 INFO L226 Difference]: Without dead ends: 17599 [2020-10-29 12:57:46,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17599 states. [2020-10-29 12:57:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17599 to 17576. [2020-10-29 12:57:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17576 states. [2020-10-29 12:57:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17576 states to 17576 states and 24095 transitions. [2020-10-29 12:57:48,000 INFO L78 Accepts]: Start accepts. Automaton has 17576 states and 24095 transitions. Word has length 163 [2020-10-29 12:57:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:48,001 INFO L481 AbstractCegarLoop]: Abstraction has 17576 states and 24095 transitions. [2020-10-29 12:57:48,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17576 states and 24095 transitions. [2020-10-29 12:57:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 12:57:48,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:48,015 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] [2020-10-29 12:57:48,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:57:48,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash -694402921, now seen corresponding path program 1 times [2020-10-29 12:57:48,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:48,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422327964] [2020-10-29 12:57:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 12:57:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:53,506 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:53,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:53,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:53,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422327964] [2020-10-29 12:57:53,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:53,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:53,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563794439] [2020-10-29 12:57:53,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:53,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:53,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:53,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:53,567 INFO L87 Difference]: Start difference. First operand 17576 states and 24095 transitions. Second operand 5 states. [2020-10-29 12:57:53,955 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:57:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:58,062 INFO L93 Difference]: Finished difference Result 30890 states and 42361 transitions. [2020-10-29 12:57:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:58,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-29 12:57:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:58,085 INFO L225 Difference]: With dead ends: 30890 [2020-10-29 12:57:58,085 INFO L226 Difference]: Without dead ends: 17542 [2020-10-29 12:57:58,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17542 states. [2020-10-29 12:57:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17542 to 17526. [2020-10-29 12:57:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17526 states. [2020-10-29 12:57:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17526 states to 17526 states and 23894 transitions. [2020-10-29 12:57:59,483 INFO L78 Accepts]: Start accepts. Automaton has 17526 states and 23894 transitions. Word has length 170 [2020-10-29 12:57:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:59,484 INFO L481 AbstractCegarLoop]: Abstraction has 17526 states and 23894 transitions. [2020-10-29 12:57:59,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 17526 states and 23894 transitions. [2020-10-29 12:57:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 12:57:59,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:59,495 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] [2020-10-29 12:57:59,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:57:59,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:59,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2029666163, now seen corresponding path program 1 times [2020-10-29 12:57:59,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:59,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473584574] [2020-10-29 12:57:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:59,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:04,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:04,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 12:58:04,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 12:58:04,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:05,100 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:58:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:05,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:05,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:05,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:58:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:05,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473584574] [2020-10-29 12:58:05,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:05,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:58:05,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957980285] [2020-10-29 12:58:05,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:58:05,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:05,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:58:05,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:58:05,192 INFO L87 Difference]: Start difference. First operand 17526 states and 23894 transitions. Second operand 9 states. [2020-10-29 12:58:05,622 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 12:58:10,785 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 12:58:11,234 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 12:58:16,177 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-10-29 12:58:17,166 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-10-29 12:58:18,156 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:58:18,582 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 12:58:20,139 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-29 12:58:21,103 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-29 12:58:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:28,743 INFO L93 Difference]: Finished difference Result 142656 states and 208765 transitions. [2020-10-29 12:58:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 12:58:28,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-10-29 12:58:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:28,934 INFO L225 Difference]: With dead ends: 142656 [2020-10-29 12:58:28,934 INFO L226 Difference]: Without dead ends: 127572 [2020-10-29 12:58:28,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:58:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127572 states. [2020-10-29 12:58:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127572 to 45510. [2020-10-29 12:58:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45510 states. [2020-10-29 12:58:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45510 states to 45510 states and 63453 transitions. [2020-10-29 12:58:35,012 INFO L78 Accepts]: Start accepts. Automaton has 45510 states and 63453 transitions. Word has length 171 [2020-10-29 12:58:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:35,013 INFO L481 AbstractCegarLoop]: Abstraction has 45510 states and 63453 transitions. [2020-10-29 12:58:35,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:58:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 45510 states and 63453 transitions. [2020-10-29 12:58:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 12:58:35,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:35,032 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] [2020-10-29 12:58:35,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:58:35,032 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2017305170, now seen corresponding path program 1 times [2020-10-29 12:58:35,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:35,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190886500] [2020-10-29 12:58:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 12:58:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:40,554 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:58:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:40,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:40,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:40,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:58:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:40,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190886500] [2020-10-29 12:58:40,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:40,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:58:40,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257339208] [2020-10-29 12:58:40,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:58:40,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:40,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:58:40,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:58:40,668 INFO L87 Difference]: Start difference. First operand 45510 states and 63453 transitions. Second operand 7 states. [2020-10-29 12:58:41,145 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:58:44,006 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 12:58:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:48,734 INFO L93 Difference]: Finished difference Result 79480 states and 114758 transitions. [2020-10-29 12:58:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:58:48,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-29 12:58:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:48,781 INFO L225 Difference]: With dead ends: 79480 [2020-10-29 12:58:48,781 INFO L226 Difference]: Without dead ends: 40120 [2020-10-29 12:58:48,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:58:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40120 states. [2020-10-29 12:58:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40120 to 33514. [2020-10-29 12:58:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33514 states. [2020-10-29 12:58:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33514 states to 33514 states and 47920 transitions. [2020-10-29 12:58:53,166 INFO L78 Accepts]: Start accepts. Automaton has 33514 states and 47920 transitions. Word has length 171 [2020-10-29 12:58:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:53,166 INFO L481 AbstractCegarLoop]: Abstraction has 33514 states and 47920 transitions. [2020-10-29 12:58:53,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:58:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 33514 states and 47920 transitions. [2020-10-29 12:58:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 12:58:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:53,182 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] [2020-10-29 12:58:53,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:58:53,183 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:53,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1411086981, now seen corresponding path program 1 times [2020-10-29 12:58:53,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:53,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396439291] [2020-10-29 12:58:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:58:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:58,636 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:58:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:58,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:58,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396439291] [2020-10-29 12:58:58,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:58,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:58:58,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65981399] [2020-10-29 12:58:58,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:58:58,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:58,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:58:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:58:58,681 INFO L87 Difference]: Start difference. First operand 33514 states and 47920 transitions. Second operand 4 states. [2020-10-29 12:59:01,609 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:59:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:08,276 INFO L93 Difference]: Finished difference Result 89330 states and 130525 transitions. [2020-10-29 12:59:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:59:08,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-29 12:59:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:08,380 INFO L225 Difference]: With dead ends: 89330 [2020-10-29 12:59:08,380 INFO L226 Difference]: Without dead ends: 61320 [2020-10-29 12:59:08,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:59:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61320 states. [2020-10-29 12:59:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61320 to 61317. [2020-10-29 12:59:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61317 states. [2020-10-29 12:59:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61317 states to 61317 states and 88466 transitions. [2020-10-29 12:59:16,574 INFO L78 Accepts]: Start accepts. Automaton has 61317 states and 88466 transitions. Word has length 171 [2020-10-29 12:59:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:59:16,574 INFO L481 AbstractCegarLoop]: Abstraction has 61317 states and 88466 transitions. [2020-10-29 12:59:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:59:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 61317 states and 88466 transitions. [2020-10-29 12:59:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 12:59:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:16,596 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] [2020-10-29 12:59:16,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:59:16,596 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:16,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1783844790, now seen corresponding path program 1 times [2020-10-29 12:59:16,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:16,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95963197] [2020-10-29 12:59:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:21,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 12:59:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:59:22,080 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:59:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:22,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:22,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:22,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:59:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:59:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:22,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95963197] [2020-10-29 12:59:22,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:22,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:59:22,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58033446] [2020-10-29 12:59:22,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:59:22,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:59:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:59:22,166 INFO L87 Difference]: Start difference. First operand 61317 states and 88466 transitions. Second operand 6 states. [2020-10-29 12:59:22,616 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 12:59:25,736 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 12:59:26,778 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 12:59:27,252 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 205