/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_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:20:47,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:20:47,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:20:47,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:20:47,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:20:47,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:20:47,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:20:47,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:20:47,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:20:47,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:20:47,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:20:47,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:20:47,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:20:47,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:20:47,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:20:47,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:20:47,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:20:47,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:20:47,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:20:47,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:20:47,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:20:47,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:20:47,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:20:47,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:20:47,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:20:47,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:20:47,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:20:47,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:20:47,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:20:47,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:20:47,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:20:47,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:20:47,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:20:47,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:20:47,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:20:47,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:20:47,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:20:47,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:20:47,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:20:47,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:20:47,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:20:47,904 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 13:20:47,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:20:47,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:20:47,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:20:47,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:20:47,951 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:20:47,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:20:47,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:20:47,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:20:47,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:20:47,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:20:47,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:20:47,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:20:47,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:20:47,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:20:47,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:20:47,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:20:47,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:20:47,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:20:47,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:20:47,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:20:47,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:20:47,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:20:47,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:20:47,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:20:47,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:20:47,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:20:47,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:20:47,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:20:47,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:20:47,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:20:48,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:20:48,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:20:48,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:20:48,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:20:48,346 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:20:48,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:20:48,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36068ea34/b32300e43dc04f60aa01cd78ffa98b02/FLAGa38daf544 [2020-10-29 13:20:49,083 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:20:49,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:20:49,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36068ea34/b32300e43dc04f60aa01cd78ffa98b02/FLAGa38daf544 [2020-10-29 13:20:49,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36068ea34/b32300e43dc04f60aa01cd78ffa98b02 [2020-10-29 13:20:49,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:20:49,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:20:49,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:20:49,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:20:49,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:20:49,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:20:49" (1/1) ... [2020-10-29 13:20:49,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0ef744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:49, skipping insertion in model container [2020-10-29 13:20:49,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:20:49" (1/1) ... [2020-10-29 13:20:49,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:20:49,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:20:49,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:20:49,952 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:20:50,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:20:50,089 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:20:50,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50 WrapperNode [2020-10-29 13:20:50,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:20:50,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:20:50,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:20:50,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:20:50,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (1/1) ... [2020-10-29 13:20:50,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:20:50,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:20:50,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:20:50,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:20:50,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (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 13:20:50,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:20:50,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:20:50,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:20:50,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:20:50,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:20:50,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:20:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:20:50,268 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:20:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:20:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:20:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:20:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:20:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:20:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:20:51,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:20:51,287 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:20:51,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:20:51 BoogieIcfgContainer [2020-10-29 13:20:51,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:20:51,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:20:51,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:20:51,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:20:51,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:20:49" (1/3) ... [2020-10-29 13:20:51,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8874fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:20:51, skipping insertion in model container [2020-10-29 13:20:51,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:20:50" (2/3) ... [2020-10-29 13:20:51,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8874fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:20:51, skipping insertion in model container [2020-10-29 13:20:51,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:20:51" (3/3) ... [2020-10-29 13:20:51,298 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:20:51,310 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:20:51,316 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:20:51,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:20:51,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:20:51,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:20:51,358 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:20:51,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:20:51,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:20:51,359 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:20:51,359 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:20:51,359 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:20:51,382 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-29 13:20:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:20:51,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:51,394 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] [2020-10-29 13:20:51,394 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:51,401 INFO L82 PathProgramCache]: Analyzing trace with hash 691850863, now seen corresponding path program 1 times [2020-10-29 13:20:51,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:51,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696738778] [2020-10-29 13:20:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:56,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:20:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:20:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:20:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:56,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:20:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:20:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:20:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:20:57,478 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:20:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:20:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:20:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:20:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:20:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:20:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:20:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:20:57,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:20:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:20:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:20:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:20:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:20:57,604 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 13:20:57,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696738778] [2020-10-29 13:20:57,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:20:57,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:20:57,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680663488] [2020-10-29 13:20:57,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:20:57,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:20:57,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:20:57,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:20:57,632 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-29 13:20:58,166 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 13:20:59,369 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 13:20:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:20:59,771 INFO L93 Difference]: Finished difference Result 336 states and 551 transitions. [2020-10-29 13:20:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:20:59,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-29 13:20:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:20:59,787 INFO L225 Difference]: With dead ends: 336 [2020-10-29 13:20:59,787 INFO L226 Difference]: Without dead ends: 219 [2020-10-29 13:20:59,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:20:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-29 13:20:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2020-10-29 13:20:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-29 13:20:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2020-10-29 13:20:59,879 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 81 [2020-10-29 13:20:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:20:59,880 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2020-10-29 13:20:59,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:20:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2020-10-29 13:20:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:20:59,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:20:59,886 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] [2020-10-29 13:20:59,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:20:59,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:20:59,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:20:59,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1457282553, now seen corresponding path program 1 times [2020-10-29 13:20:59,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:20:59,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185711169] [2020-10-29 13:20:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:20:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:20:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:04,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:21:04,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:21:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:21:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:04,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:21:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:21:04,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:21:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:21:05,320 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:05,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:05,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:05,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:05,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:21:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:05,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:21:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:21:05,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:21:05,423 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 13:21:05,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185711169] [2020-10-29 13:21:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:05,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:21:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205004564] [2020-10-29 13:21:05,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:21:05,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:05,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:21:05,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:21:05,439 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand 6 states. [2020-10-29 13:21:05,853 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 13:21:06,767 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 13:21:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:07,132 INFO L93 Difference]: Finished difference Result 526 states and 785 transitions. [2020-10-29 13:21:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:21:07,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-29 13:21:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:07,145 INFO L225 Difference]: With dead ends: 526 [2020-10-29 13:21:07,145 INFO L226 Difference]: Without dead ends: 356 [2020-10-29 13:21:07,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:21:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-29 13:21:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 353. [2020-10-29 13:21:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-10-29 13:21:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 521 transitions. [2020-10-29 13:21:07,202 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 521 transitions. Word has length 82 [2020-10-29 13:21:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:07,203 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 521 transitions. [2020-10-29 13:21:07,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:21:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 521 transitions. [2020-10-29 13:21:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 13:21:07,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:07,205 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] [2020-10-29 13:21:07,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:21:07,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:07,207 INFO L82 PathProgramCache]: Analyzing trace with hash 550509455, now seen corresponding path program 1 times [2020-10-29 13:21:07,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:07,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173394786] [2020-10-29 13:21:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 13:21:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:21:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:21:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:12,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:21:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:21:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:21:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:21:12,603 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:21:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:12,679 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 13:21:12,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173394786] [2020-10-29 13:21:12,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:12,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:21:12,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85646302] [2020-10-29 13:21:12,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:21:12,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:12,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:21:12,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:21:12,683 INFO L87 Difference]: Start difference. First operand 353 states and 521 transitions. Second operand 6 states. [2020-10-29 13:21:12,975 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 13:21:13,623 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 13:21:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:14,090 INFO L93 Difference]: Finished difference Result 883 states and 1347 transitions. [2020-10-29 13:21:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:21:14,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-29 13:21:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:14,096 INFO L225 Difference]: With dead ends: 883 [2020-10-29 13:21:14,096 INFO L226 Difference]: Without dead ends: 588 [2020-10-29 13:21:14,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:21:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-29 13:21:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 585. [2020-10-29 13:21:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-29 13:21:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 880 transitions. [2020-10-29 13:21:14,179 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 880 transitions. Word has length 83 [2020-10-29 13:21:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:14,183 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 880 transitions. [2020-10-29 13:21:14,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:21:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 880 transitions. [2020-10-29 13:21:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:21:14,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:14,193 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] [2020-10-29 13:21:14,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:21:14,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash 341130904, now seen corresponding path program 1 times [2020-10-29 13:21:14,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:14,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695963267] [2020-10-29 13:21:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:19,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:19,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 13:21:19,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:21:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:21:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:21:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:21:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:21:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:19,599 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:19,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:19,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:19,657 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 13:21:19,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695963267] [2020-10-29 13:21:19,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:19,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:21:19,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884166297] [2020-10-29 13:21:19,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:21:19,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:19,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:21:19,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:21:19,662 INFO L87 Difference]: Start difference. First operand 585 states and 880 transitions. Second operand 8 states. [2020-10-29 13:21:20,000 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 13:21:20,870 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 13:21:21,185 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:21:21,483 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 13:21:21,774 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:21:22,167 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:21:22,500 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:21:22,854 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 13:21:23,159 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 13:21:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:24,242 INFO L93 Difference]: Finished difference Result 5348 states and 8336 transitions. [2020-10-29 13:21:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 13:21:24,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-29 13:21:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:24,271 INFO L225 Difference]: With dead ends: 5348 [2020-10-29 13:21:24,272 INFO L226 Difference]: Without dead ends: 4885 [2020-10-29 13:21:24,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-29 13:21:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2020-10-29 13:21:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 1098. [2020-10-29 13:21:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-10-29 13:21:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1668 transitions. [2020-10-29 13:21:24,425 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1668 transitions. Word has length 84 [2020-10-29 13:21:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:24,425 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1668 transitions. [2020-10-29 13:21:24,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:21:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1668 transitions. [2020-10-29 13:21:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 13:21:24,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:24,428 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] [2020-10-29 13:21:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:21:24,428 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1680204061, now seen corresponding path program 1 times [2020-10-29 13:21:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:24,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809309843] [2020-10-29 13:21:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:25,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:21:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:21:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:21:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:21:29,845 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:29,929 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 13:21:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809309843] [2020-10-29 13:21:29,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:29,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:21:29,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901458085] [2020-10-29 13:21:29,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:21:29,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:29,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:21:29,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:21:29,934 INFO L87 Difference]: Start difference. First operand 1098 states and 1668 transitions. Second operand 6 states. [2020-10-29 13:21:30,343 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 13:21:31,359 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:21:31,618 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 13:21:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:33,019 INFO L93 Difference]: Finished difference Result 7889 states and 12182 transitions. [2020-10-29 13:21:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:21:33,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-10-29 13:21:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:33,056 INFO L225 Difference]: With dead ends: 7889 [2020-10-29 13:21:33,057 INFO L226 Difference]: Without dead ends: 6913 [2020-10-29 13:21:33,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:21:33,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6913 states. [2020-10-29 13:21:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6913 to 4157. [2020-10-29 13:21:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4157 states. [2020-10-29 13:21:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 6378 transitions. [2020-10-29 13:21:33,452 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 6378 transitions. Word has length 86 [2020-10-29 13:21:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:33,453 INFO L481 AbstractCegarLoop]: Abstraction has 4157 states and 6378 transitions. [2020-10-29 13:21:33,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:21:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 6378 transitions. [2020-10-29 13:21:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 13:21:33,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:33,456 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] [2020-10-29 13:21:33,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:21:33,457 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1738275150, now seen corresponding path program 1 times [2020-10-29 13:21:33,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:33,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788200515] [2020-10-29 13:21:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:38,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 13:21:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:21:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:21:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:38,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:21:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:38,727 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-29 13:21:39,016 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:39,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:39,064 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 13:21:39,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788200515] [2020-10-29 13:21:39,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:39,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:21:39,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898551499] [2020-10-29 13:21:39,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:21:39,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:39,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:21:39,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:21:39,066 INFO L87 Difference]: Start difference. First operand 4157 states and 6378 transitions. Second operand 8 states. [2020-10-29 13:21:39,420 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 13:21:40,446 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:21:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:41,468 INFO L93 Difference]: Finished difference Result 9718 states and 14982 transitions. [2020-10-29 13:21:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:21:41,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-29 13:21:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:41,501 INFO L225 Difference]: With dead ends: 9718 [2020-10-29 13:21:41,501 INFO L226 Difference]: Without dead ends: 5859 [2020-10-29 13:21:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:21:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2020-10-29 13:21:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 4008. [2020-10-29 13:21:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-29 13:21:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 6152 transitions. [2020-10-29 13:21:42,020 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 6152 transitions. Word has length 86 [2020-10-29 13:21:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:42,020 INFO L481 AbstractCegarLoop]: Abstraction has 4008 states and 6152 transitions. [2020-10-29 13:21:42,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:21:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 6152 transitions. [2020-10-29 13:21:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:21:42,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:42,023 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] [2020-10-29 13:21:42,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:21:42,023 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1981733249, now seen corresponding path program 1 times [2020-10-29 13:21:42,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:42,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530233137] [2020-10-29 13:21:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:42,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:47,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:21:47,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:21:47,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:21:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:47,418 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:47,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:47,464 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 13:21:47,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530233137] [2020-10-29 13:21:47,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:47,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:21:47,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738555812] [2020-10-29 13:21:47,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:21:47,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:47,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:21:47,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:21:47,467 INFO L87 Difference]: Start difference. First operand 4008 states and 6152 transitions. Second operand 8 states. [2020-10-29 13:21:47,840 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 13:21:48,747 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 13:21:49,072 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 13:21:49,401 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:21:49,787 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 13:21:50,131 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 13:21:50,454 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 13:21:50,754 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:21:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:21:52,929 INFO L93 Difference]: Finished difference Result 24281 states and 37430 transitions. [2020-10-29 13:21:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 13:21:52,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 13:21:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:21:53,003 INFO L225 Difference]: With dead ends: 24281 [2020-10-29 13:21:53,004 INFO L226 Difference]: Without dead ends: 20614 [2020-10-29 13:21:53,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:21:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20614 states. [2020-10-29 13:21:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20614 to 8484. [2020-10-29 13:21:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8484 states. [2020-10-29 13:21:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8484 states to 8484 states and 13000 transitions. [2020-10-29 13:21:54,215 INFO L78 Accepts]: Start accepts. Automaton has 8484 states and 13000 transitions. Word has length 87 [2020-10-29 13:21:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:21:54,215 INFO L481 AbstractCegarLoop]: Abstraction has 8484 states and 13000 transitions. [2020-10-29 13:21:54,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:21:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8484 states and 13000 transitions. [2020-10-29 13:21:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:21:54,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:54,218 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] [2020-10-29 13:21:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:21:54,219 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1249410664, now seen corresponding path program 1 times [2020-10-29 13:21:54,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716410594] [2020-10-29 13:21:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:21:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:54,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:55,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:57,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:59,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:59,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:21:59,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:21:59,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:21:59,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:59,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:59,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:21:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:21:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:21:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:21:59,744 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:21:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:21:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:21:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:21:59,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:21:59,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:21:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:21:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:21:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:21:59,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:21:59,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:21:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:21:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:21:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:21:59,844 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 13:21:59,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716410594] [2020-10-29 13:21:59,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:21:59,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:21:59,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654530388] [2020-10-29 13:21:59,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:21:59,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:21:59,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:21:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:21:59,855 INFO L87 Difference]: Start difference. First operand 8484 states and 13000 transitions. Second operand 9 states. [2020-10-29 13:22:00,228 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 13:22:01,369 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:22:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:03,348 INFO L93 Difference]: Finished difference Result 21022 states and 32184 transitions. [2020-10-29 13:22:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:22:03,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 13:22:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:03,383 INFO L225 Difference]: With dead ends: 21022 [2020-10-29 13:22:03,383 INFO L226 Difference]: Without dead ends: 12723 [2020-10-29 13:22:03,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:22:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12723 states. [2020-10-29 13:22:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12723 to 8484. [2020-10-29 13:22:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8484 states. [2020-10-29 13:22:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8484 states to 8484 states and 12992 transitions. [2020-10-29 13:22:04,557 INFO L78 Accepts]: Start accepts. Automaton has 8484 states and 12992 transitions. Word has length 87 [2020-10-29 13:22:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:04,558 INFO L481 AbstractCegarLoop]: Abstraction has 8484 states and 12992 transitions. [2020-10-29 13:22:04,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:22:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8484 states and 12992 transitions. [2020-10-29 13:22:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:22:04,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:04,560 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] [2020-10-29 13:22:04,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:22:04,560 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1170573890, now seen corresponding path program 1 times [2020-10-29 13:22:04,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:04,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352936062] [2020-10-29 13:22:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:08,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:09,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:09,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:22:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:22:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:22:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:09,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 13:22:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:22:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:09,925 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:22:09,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:09,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:22:09,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:09,955 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 13:22:09,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352936062] [2020-10-29 13:22:09,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:09,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:22:09,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906024916] [2020-10-29 13:22:09,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:09,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:09,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:09,957 INFO L87 Difference]: Start difference. First operand 8484 states and 12992 transitions. Second operand 6 states. [2020-10-29 13:22:10,275 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 13:22:11,418 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 13:22:11,775 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:22:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:19,010 INFO L93 Difference]: Finished difference Result 63019 states and 96741 transitions. [2020-10-29 13:22:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:22:19,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-29 13:22:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:19,147 INFO L225 Difference]: With dead ends: 63019 [2020-10-29 13:22:19,148 INFO L226 Difference]: Without dead ends: 54790 [2020-10-29 13:22:19,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:22:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54790 states. [2020-10-29 13:22:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54790 to 33321. [2020-10-29 13:22:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33321 states. [2020-10-29 13:22:24,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33321 states to 33321 states and 50941 transitions. [2020-10-29 13:22:24,070 INFO L78 Accepts]: Start accepts. Automaton has 33321 states and 50941 transitions. Word has length 87 [2020-10-29 13:22:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:24,071 INFO L481 AbstractCegarLoop]: Abstraction has 33321 states and 50941 transitions. [2020-10-29 13:22:24,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 33321 states and 50941 transitions. [2020-10-29 13:22:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:22:24,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:24,076 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] [2020-10-29 13:22:24,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:22:24,077 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:24,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1812530711, now seen corresponding path program 1 times [2020-10-29 13:22:24,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798404089] [2020-10-29 13:22:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:24,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:29,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:22:29,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:22:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:29,434 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:22:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:29,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:29,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:22:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:29,467 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 13:22:29,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798404089] [2020-10-29 13:22:29,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:29,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:22:29,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843953067] [2020-10-29 13:22:29,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:29,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:29,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:29,469 INFO L87 Difference]: Start difference. First operand 33321 states and 50941 transitions. Second operand 6 states. [2020-10-29 13:22:29,810 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 13:22:30,703 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:22:31,099 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 13:22:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:36,972 INFO L93 Difference]: Finished difference Result 69300 states and 105845 transitions. [2020-10-29 13:22:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:22:36,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:22:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:37,057 INFO L225 Difference]: With dead ends: 69300 [2020-10-29 13:22:37,058 INFO L226 Difference]: Without dead ends: 47921 [2020-10-29 13:22:37,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:22:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47921 states. [2020-10-29 13:22:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47921 to 46107. [2020-10-29 13:22:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46107 states. [2020-10-29 13:22:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46107 states to 46107 states and 70655 transitions. [2020-10-29 13:22:43,759 INFO L78 Accepts]: Start accepts. Automaton has 46107 states and 70655 transitions. Word has length 88 [2020-10-29 13:22:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:43,759 INFO L481 AbstractCegarLoop]: Abstraction has 46107 states and 70655 transitions. [2020-10-29 13:22:43,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 46107 states and 70655 transitions. [2020-10-29 13:22:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:22:43,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:43,764 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] [2020-10-29 13:22:43,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:22:43,765 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:43,765 INFO L82 PathProgramCache]: Analyzing trace with hash 25318940, now seen corresponding path program 1 times [2020-10-29 13:22:43,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:43,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227859573] [2020-10-29 13:22:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:22:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:22:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:22:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:49,371 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:22:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:22:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:49,433 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 13:22:49,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227859573] [2020-10-29 13:22:49,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:49,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:22:49,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291221563] [2020-10-29 13:22:49,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:22:49,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:22:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:22:49,436 INFO L87 Difference]: Start difference. First operand 46107 states and 70655 transitions. Second operand 8 states. [2020-10-29 13:22:49,860 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:22:51,074 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:22:51,372 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 13:22:51,943 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 13:22:52,286 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 13:22:52,740 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 13:22:53,108 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:22:53,462 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 13:22:53,790 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 13:23:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:10,501 INFO L93 Difference]: Finished difference Result 172057 states and 263813 transitions. [2020-10-29 13:23:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 13:23:10,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-29 13:23:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:10,748 INFO L225 Difference]: With dead ends: 172057 [2020-10-29 13:23:10,749 INFO L226 Difference]: Without dead ends: 126990 [2020-10-29 13:23:10,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-29 13:23:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126990 states. [2020-10-29 13:23:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126990 to 46107. [2020-10-29 13:23:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46107 states. [2020-10-29 13:23:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46107 states to 46107 states and 70431 transitions. [2020-10-29 13:23:18,634 INFO L78 Accepts]: Start accepts. Automaton has 46107 states and 70431 transitions. Word has length 88 [2020-10-29 13:23:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:18,635 INFO L481 AbstractCegarLoop]: Abstraction has 46107 states and 70431 transitions. [2020-10-29 13:23:18,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:23:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 46107 states and 70431 transitions. [2020-10-29 13:23:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:23:18,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:18,640 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] [2020-10-29 13:23:18,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:23:18,640 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash -2034461765, now seen corresponding path program 1 times [2020-10-29 13:23:18,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:18,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795858692] [2020-10-29 13:23:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:23,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:23:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:23:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:23:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:23,999 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:23:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:24,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:23:24,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:24,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:23:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:23:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:24,056 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 13:23:24,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795858692] [2020-10-29 13:23:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:24,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:23:24,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487155164] [2020-10-29 13:23:24,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:23:24,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:23:24,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:23:24,065 INFO L87 Difference]: Start difference. First operand 46107 states and 70431 transitions. Second operand 5 states. [2020-10-29 13:23:24,381 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:23:25,285 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:23:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:37,081 INFO L93 Difference]: Finished difference Result 127033 states and 193419 transitions. [2020-10-29 13:23:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:23:37,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-29 13:23:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:37,227 INFO L225 Difference]: With dead ends: 127033 [2020-10-29 13:23:37,228 INFO L226 Difference]: Without dead ends: 81966 [2020-10-29 13:23:37,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:23:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81966 states. [2020-10-29 13:23:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81966 to 81963. [2020-10-29 13:23:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81963 states. [2020-10-29 13:23:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81963 states to 81963 states and 123631 transitions. [2020-10-29 13:23:49,504 INFO L78 Accepts]: Start accepts. Automaton has 81963 states and 123631 transitions. Word has length 88 [2020-10-29 13:23:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:49,505 INFO L481 AbstractCegarLoop]: Abstraction has 81963 states and 123631 transitions. [2020-10-29 13:23:49,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:23:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 81963 states and 123631 transitions. [2020-10-29 13:23:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:23:49,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:49,510 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] [2020-10-29 13:23:49,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:23:49,511 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:49,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1656023928, now seen corresponding path program 1 times [2020-10-29 13:23:49,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:49,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878168674] [2020-10-29 13:23:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:50,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:54,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:54,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:23:54,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 13:23:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:23:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:54,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:23:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:23:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:23:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:55,072 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:23:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:55,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:23:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:23:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:55,119 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 13:23:55,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878168674] [2020-10-29 13:23:55,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:55,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:23:55,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956476947] [2020-10-29 13:23:55,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:23:55,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:55,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:23:55,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:23:55,121 INFO L87 Difference]: Start difference. First operand 81963 states and 123631 transitions. Second operand 9 states. [2020-10-29 13:23:55,494 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 13:23:56,920 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 13:24:18,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:18,404 INFO L93 Difference]: Finished difference Result 205313 states and 308875 transitions. [2020-10-29 13:24:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:24:18,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 13:24:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:18,691 INFO L225 Difference]: With dead ends: 205313 [2020-10-29 13:24:18,692 INFO L226 Difference]: Without dead ends: 124306 [2020-10-29 13:24:18,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:24:18,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124306 states.