/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:58,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:58,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:58,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:58,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:58,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:58,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:58,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:58,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:58,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:58,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:58,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:58,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:58,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:58,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:58,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:58,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:58,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:58,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:58,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:58,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:58,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:58,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:58,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:58,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:58,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:58,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:58,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:58,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:58,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:58,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:58,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:58,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:58,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:58,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:58,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:58,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:58,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:58,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:58,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:58,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:58,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:22:58,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:58,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:58,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:58,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:58,966 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:58,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:58,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:58,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:58,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:58,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:58,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:58,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:58,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:58,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:58,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:58,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:58,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:58,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:58,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:58,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:58,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:58,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:58,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:58,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:58,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:59,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:59,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:59,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:59,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:59,407 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:59,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:22:59,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6113d5c56/b32d32be1de045588e229e5419c94b4d/FLAG1938c43de [2020-10-27 23:23:00,184 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:23:00,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:23:00,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6113d5c56/b32d32be1de045588e229e5419c94b4d/FLAG1938c43de [2020-10-27 23:23:00,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6113d5c56/b32d32be1de045588e229e5419c94b4d [2020-10-27 23:23:00,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:23:00,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:23:00,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:23:00,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:23:00,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:23:00,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:23:00" (1/1) ... [2020-10-27 23:23:00,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e04a4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:00, skipping insertion in model container [2020-10-27 23:23:00,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:23:00" (1/1) ... [2020-10-27 23:23:00,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:23:00,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:23:01,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:23:01,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:23:01,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:23:01,275 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:23:01,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01 WrapperNode [2020-10-27 23:23:01,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:23:01,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:23:01,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:23:01,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:23:01,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:23:01,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:23:01,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:23:01,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:23:01,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:23:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:23:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:23:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:23:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:23:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:23:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:23:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:23:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:23:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:23:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:23:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:23:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:23:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:23:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:23:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:23:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:23:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:23:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:23:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:23:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:23:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:23:02,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:23:02,876 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:23:02,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:02 BoogieIcfgContainer [2020-10-27 23:23:02,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:23:02,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:23:02,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:23:02,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:23:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:23:00" (1/3) ... [2020-10-27 23:23:02,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e879e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:02, skipping insertion in model container [2020-10-27 23:23:02,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (2/3) ... [2020-10-27 23:23:02,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e879e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:02, skipping insertion in model container [2020-10-27 23:23:02,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:02" (3/3) ... [2020-10-27 23:23:02,888 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 23:23:02,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:23:02,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:23:02,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:23:02,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:23:02,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:23:02,969 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:23:02,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:23:02,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:23:02,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:23:02,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:23:02,970 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:23:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2020-10-27 23:23:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 23:23:03,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:03,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:03,048 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash 255437413, now seen corresponding path program 1 times [2020-10-27 23:23:03,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:03,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497428427] [2020-10-27 23:23:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:03,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:08,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:08,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 23:23:08,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:23:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 23:23:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 23:23:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 23:23:09,128 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:09,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:23:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497428427] [2020-10-27 23:23:09,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:09,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:09,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852637485] [2020-10-27 23:23:09,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:09,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:09,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:09,313 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 4 states. [2020-10-27 23:23:09,757 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:23:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:11,587 INFO L93 Difference]: Finished difference Result 611 states and 1066 transitions. [2020-10-27 23:23:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:11,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-27 23:23:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:11,610 INFO L225 Difference]: With dead ends: 611 [2020-10-27 23:23:11,610 INFO L226 Difference]: Without dead ends: 495 [2020-10-27 23:23:11,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-27 23:23:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-27 23:23:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-27 23:23:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 731 transitions. [2020-10-27 23:23:11,716 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 731 transitions. Word has length 149 [2020-10-27 23:23:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:11,717 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 731 transitions. [2020-10-27 23:23:11,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 731 transitions. [2020-10-27 23:23:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 23:23:11,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:11,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:11,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:23:11,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1397685933, now seen corresponding path program 1 times [2020-10-27 23:23:11,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:11,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042175295] [2020-10-27 23:23:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:16,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 23:23:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:23:16,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 23:23:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 23:23:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:17,232 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:17,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:23:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042175295] [2020-10-27 23:23:17,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:17,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:17,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625839348] [2020-10-27 23:23:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:17,337 INFO L87 Difference]: Start difference. First operand 492 states and 731 transitions. Second operand 4 states. [2020-10-27 23:23:17,754 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:23:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:19,161 INFO L93 Difference]: Finished difference Result 1036 states and 1584 transitions. [2020-10-27 23:23:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:19,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-27 23:23:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:19,177 INFO L225 Difference]: With dead ends: 1036 [2020-10-27 23:23:19,178 INFO L226 Difference]: Without dead ends: 853 [2020-10-27 23:23:19,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-27 23:23:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 850. [2020-10-27 23:23:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-27 23:23:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1275 transitions. [2020-10-27 23:23:19,263 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1275 transitions. Word has length 149 [2020-10-27 23:23:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:19,263 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1275 transitions. [2020-10-27 23:23:19,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1275 transitions. [2020-10-27 23:23:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 23:23:19,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:19,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:19,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:23:19,269 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash 872619772, now seen corresponding path program 1 times [2020-10-27 23:23:19,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:19,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677361833] [2020-10-27 23:23:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:24,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 23:23:24,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 23:23:24,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:24,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 23:23:24,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:24,850 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:24,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:23:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:24,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677361833] [2020-10-27 23:23:24,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:24,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:24,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301304177] [2020-10-27 23:23:24,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:24,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:24,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:24,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:24,947 INFO L87 Difference]: Start difference. First operand 850 states and 1275 transitions. Second operand 5 states. [2020-10-27 23:23:27,048 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 23:23:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:28,024 INFO L93 Difference]: Finished difference Result 2404 states and 3612 transitions. [2020-10-27 23:23:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:28,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 23:23:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:28,034 INFO L225 Difference]: With dead ends: 2404 [2020-10-27 23:23:28,035 INFO L226 Difference]: Without dead ends: 1638 [2020-10-27 23:23:28,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-10-27 23:23:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1635. [2020-10-27 23:23:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2020-10-27 23:23:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2428 transitions. [2020-10-27 23:23:28,150 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2428 transitions. Word has length 149 [2020-10-27 23:23:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:28,150 INFO L481 AbstractCegarLoop]: Abstraction has 1635 states and 2428 transitions. [2020-10-27 23:23:28,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2428 transitions. [2020-10-27 23:23:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 23:23:28,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:28,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:28,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:23:28,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1572839832, now seen corresponding path program 1 times [2020-10-27 23:23:28,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:28,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730597685] [2020-10-27 23:23:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:33,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 23:23:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:23:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:23:33,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:23:33,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:23:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:33,713 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:33,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:23:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:33,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 30 [2020-10-27 23:23:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:33,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730597685] [2020-10-27 23:23:33,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:33,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157879235] [2020-10-27 23:23:33,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:33,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:33,839 INFO L87 Difference]: Start difference. First operand 1635 states and 2428 transitions. Second operand 5 states. [2020-10-27 23:23:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:35,319 INFO L93 Difference]: Finished difference Result 3242 states and 4811 transitions. [2020-10-27 23:23:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:35,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 23:23:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:35,331 INFO L225 Difference]: With dead ends: 3242 [2020-10-27 23:23:35,331 INFO L226 Difference]: Without dead ends: 1635 [2020-10-27 23:23:35,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2020-10-27 23:23:35,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2020-10-27 23:23:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2020-10-27 23:23:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2424 transitions. [2020-10-27 23:23:35,436 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2424 transitions. Word has length 150 [2020-10-27 23:23:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:35,436 INFO L481 AbstractCegarLoop]: Abstraction has 1635 states and 2424 transitions. [2020-10-27 23:23:35,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2424 transitions. [2020-10-27 23:23:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 23:23:35,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:35,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:35,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:23:35,441 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash -988192993, now seen corresponding path program 1 times [2020-10-27 23:23:35,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:35,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810098500] [2020-10-27 23:23:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:40,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 23:23:40,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:23:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:23:40,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:23:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 23:23:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:40,852 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:23:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:40,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810098500] [2020-10-27 23:23:40,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:40,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:40,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004047143] [2020-10-27 23:23:40,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:40,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:40,937 INFO L87 Difference]: Start difference. First operand 1635 states and 2424 transitions. Second operand 4 states. [2020-10-27 23:23:42,954 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 23:23:43,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:43,797 INFO L93 Difference]: Finished difference Result 3921 states and 5824 transitions. [2020-10-27 23:23:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:43,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-27 23:23:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:43,813 INFO L225 Difference]: With dead ends: 3921 [2020-10-27 23:23:43,813 INFO L226 Difference]: Without dead ends: 2414 [2020-10-27 23:23:43,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-10-27 23:23:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2411. [2020-10-27 23:23:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-10-27 23:23:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3525 transitions. [2020-10-27 23:23:43,961 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3525 transitions. Word has length 151 [2020-10-27 23:23:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:43,963 INFO L481 AbstractCegarLoop]: Abstraction has 2411 states and 3525 transitions. [2020-10-27 23:23:43,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3525 transitions. [2020-10-27 23:23:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 23:23:43,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:43,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:43,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:43,969 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2019248804, now seen corresponding path program 1 times [2020-10-27 23:23:43,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:43,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689146992] [2020-10-27 23:23:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:49,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:23:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:49,423 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:49,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689146992] [2020-10-27 23:23:49,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:49,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:49,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85929898] [2020-10-27 23:23:49,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:49,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:49,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:49,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:49,487 INFO L87 Difference]: Start difference. First operand 2411 states and 3525 transitions. Second operand 4 states. [2020-10-27 23:23:50,896 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:23:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:51,440 INFO L93 Difference]: Finished difference Result 6346 states and 9401 transitions. [2020-10-27 23:23:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:51,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-27 23:23:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:51,463 INFO L225 Difference]: With dead ends: 6346 [2020-10-27 23:23:51,463 INFO L226 Difference]: Without dead ends: 4391 [2020-10-27 23:23:51,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2020-10-27 23:23:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4388. [2020-10-27 23:23:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4388 states. [2020-10-27 23:23:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6431 transitions. [2020-10-27 23:23:51,724 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6431 transitions. Word has length 157 [2020-10-27 23:23:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:51,725 INFO L481 AbstractCegarLoop]: Abstraction has 4388 states and 6431 transitions. [2020-10-27 23:23:51,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6431 transitions. [2020-10-27 23:23:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 23:23:51,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:51,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:51,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:23:51,734 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:51,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:51,735 INFO L82 PathProgramCache]: Analyzing trace with hash -718902689, now seen corresponding path program 1 times [2020-10-27 23:23:51,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:51,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124928933] [2020-10-27 23:23:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 23:23:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:23:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:23:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:23:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:23:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 23:23:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:57,165 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:23:57,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:57,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:57,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:57,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124928933] [2020-10-27 23:23:57,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:57,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:23:57,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120692805] [2020-10-27 23:23:57,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:23:57,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:23:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:57,245 INFO L87 Difference]: Start difference. First operand 4388 states and 6431 transitions. Second operand 6 states. [2020-10-27 23:23:57,643 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 23:23:59,011 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 23:23:59,596 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 23:23:59,976 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 23:24:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:00,870 INFO L93 Difference]: Finished difference Result 12469 states and 19445 transitions. [2020-10-27 23:24:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:24:00,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-27 23:24:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:00,924 INFO L225 Difference]: With dead ends: 12469 [2020-10-27 23:24:00,924 INFO L226 Difference]: Without dead ends: 10706 [2020-10-27 23:24:00,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:24:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2020-10-27 23:24:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 7246. [2020-10-27 23:24:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7246 states. [2020-10-27 23:24:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 10939 transitions. [2020-10-27 23:24:01,566 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 10939 transitions. Word has length 157 [2020-10-27 23:24:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:01,567 INFO L481 AbstractCegarLoop]: Abstraction has 7246 states and 10939 transitions. [2020-10-27 23:24:01,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:24:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 10939 transitions. [2020-10-27 23:24:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 23:24:01,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:01,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:01,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:24:01,576 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:01,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1551403016, now seen corresponding path program 1 times [2020-10-27 23:24:01,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:01,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741666354] [2020-10-27 23:24:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 23:24:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,059 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:07,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:07,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:07,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:24:07,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:07,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741666354] [2020-10-27 23:24:07,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:07,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:07,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978571362] [2020-10-27 23:24:07,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:07,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:07,138 INFO L87 Difference]: Start difference. First operand 7246 states and 10939 transitions. Second operand 5 states. [2020-10-27 23:24:09,390 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 23:24:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:10,801 INFO L93 Difference]: Finished difference Result 20985 states and 31698 transitions. [2020-10-27 23:24:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:24:10,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 23:24:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:10,849 INFO L225 Difference]: With dead ends: 20985 [2020-10-27 23:24:10,849 INFO L226 Difference]: Without dead ends: 14011 [2020-10-27 23:24:10,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:10,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14011 states. [2020-10-27 23:24:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14011 to 14008. [2020-10-27 23:24:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14008 states. [2020-10-27 23:24:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14008 states to 14008 states and 20927 transitions. [2020-10-27 23:24:11,896 INFO L78 Accepts]: Start accepts. Automaton has 14008 states and 20927 transitions. Word has length 157 [2020-10-27 23:24:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:11,897 INFO L481 AbstractCegarLoop]: Abstraction has 14008 states and 20927 transitions. [2020-10-27 23:24:11,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14008 states and 20927 transitions. [2020-10-27 23:24:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 23:24:11,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:11,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:11,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:24:11,914 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash 206964931, now seen corresponding path program 1 times [2020-10-27 23:24:11,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:11,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35646498] [2020-10-27 23:24:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 23:24:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:24:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,300 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:17,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:17,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35646498] [2020-10-27 23:24:17,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:17,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525573655] [2020-10-27 23:24:17,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:17,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:17,338 INFO L87 Difference]: Start difference. First operand 14008 states and 20927 transitions. Second operand 4 states. [2020-10-27 23:24:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:21,146 INFO L93 Difference]: Finished difference Result 41824 states and 62489 transitions. [2020-10-27 23:24:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:24:21,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-27 23:24:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:21,218 INFO L225 Difference]: With dead ends: 41824 [2020-10-27 23:24:21,218 INFO L226 Difference]: Without dead ends: 27951 [2020-10-27 23:24:21,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27951 states. [2020-10-27 23:24:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27951 to 14018. [2020-10-27 23:24:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14018 states. [2020-10-27 23:24:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14018 states to 14018 states and 20937 transitions. [2020-10-27 23:24:22,528 INFO L78 Accepts]: Start accepts. Automaton has 14018 states and 20937 transitions. Word has length 158 [2020-10-27 23:24:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:22,528 INFO L481 AbstractCegarLoop]: Abstraction has 14018 states and 20937 transitions. [2020-10-27 23:24:22,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14018 states and 20937 transitions. [2020-10-27 23:24:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 23:24:22,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:22,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:22,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:24:22,541 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:22,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1553858425, now seen corresponding path program 1 times [2020-10-27 23:24:22,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:22,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865612990] [2020-10-27 23:24:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:27,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:27,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 23:24:27,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:24:27,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 23:24:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:24:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:27,947 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:28,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865612990] [2020-10-27 23:24:28,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:28,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:28,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497873986] [2020-10-27 23:24:28,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:28,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:28,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:28,004 INFO L87 Difference]: Start difference. First operand 14018 states and 20937 transitions. Second operand 4 states. [2020-10-27 23:24:30,459 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 23:24:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:32,189 INFO L93 Difference]: Finished difference Result 38691 states and 57879 transitions. [2020-10-27 23:24:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:32,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-27 23:24:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:32,240 INFO L225 Difference]: With dead ends: 38691 [2020-10-27 23:24:32,240 INFO L226 Difference]: Without dead ends: 25124 [2020-10-27 23:24:32,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25124 states. [2020-10-27 23:24:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25124 to 25121. [2020-10-27 23:24:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25121 states. [2020-10-27 23:24:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25121 states to 25121 states and 37154 transitions. [2020-10-27 23:24:34,063 INFO L78 Accepts]: Start accepts. Automaton has 25121 states and 37154 transitions. Word has length 159 [2020-10-27 23:24:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:34,063 INFO L481 AbstractCegarLoop]: Abstraction has 25121 states and 37154 transitions. [2020-10-27 23:24:34,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 25121 states and 37154 transitions. [2020-10-27 23:24:34,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 23:24:34,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:34,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:34,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:24:34,083 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:34,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:34,083 INFO L82 PathProgramCache]: Analyzing trace with hash 46206524, now seen corresponding path program 1 times [2020-10-27 23:24:34,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:34,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528462605] [2020-10-27 23:24:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:39,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:39,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 23:24:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:24:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:39,517 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:39,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528462605] [2020-10-27 23:24:39,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:39,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913180586] [2020-10-27 23:24:39,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:39,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:39,585 INFO L87 Difference]: Start difference. First operand 25121 states and 37154 transitions. Second operand 5 states. [2020-10-27 23:24:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:42,067 INFO L93 Difference]: Finished difference Result 44527 states and 65831 transitions. [2020-10-27 23:24:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:42,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 23:24:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:42,108 INFO L225 Difference]: With dead ends: 44527 [2020-10-27 23:24:42,108 INFO L226 Difference]: Without dead ends: 19747 [2020-10-27 23:24:42,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19747 states. [2020-10-27 23:24:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19747 to 19747. [2020-10-27 23:24:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19747 states. [2020-10-27 23:24:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19747 states to 19747 states and 29080 transitions. [2020-10-27 23:24:43,599 INFO L78 Accepts]: Start accepts. Automaton has 19747 states and 29080 transitions. Word has length 159 [2020-10-27 23:24:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:43,599 INFO L481 AbstractCegarLoop]: Abstraction has 19747 states and 29080 transitions. [2020-10-27 23:24:43,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 19747 states and 29080 transitions. [2020-10-27 23:24:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 23:24:43,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:43,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:43,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:24:43,611 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash -331718053, now seen corresponding path program 1 times [2020-10-27 23:24:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:43,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71709682] [2020-10-27 23:24:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 23:24:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:24:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:24:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:24:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:24:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:49,069 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:24:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:49,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:49,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:24:49,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:49,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71709682] [2020-10-27 23:24:49,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:49,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:49,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132287758] [2020-10-27 23:24:49,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:49,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:49,122 INFO L87 Difference]: Start difference. First operand 19747 states and 29080 transitions. Second operand 5 states. [2020-10-27 23:24:51,727 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 23:24:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:53,517 INFO L93 Difference]: Finished difference Result 33324 states and 49108 transitions. [2020-10-27 23:24:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:24:53,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-27 23:24:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:53,552 INFO L225 Difference]: With dead ends: 33324 [2020-10-27 23:24:53,552 INFO L226 Difference]: Without dead ends: 19906 [2020-10-27 23:24:53,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19906 states. [2020-10-27 23:24:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19906 to 19764. [2020-10-27 23:24:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19764 states. [2020-10-27 23:24:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 29108 transitions. [2020-10-27 23:24:55,141 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 29108 transitions. Word has length 165 [2020-10-27 23:24:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:55,142 INFO L481 AbstractCegarLoop]: Abstraction has 19764 states and 29108 transitions. [2020-10-27 23:24:55,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 29108 transitions. [2020-10-27 23:24:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 23:24:55,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:55,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:55,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:24:55,154 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:55,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1676092935, now seen corresponding path program 1 times [2020-10-27 23:24:55,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:55,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364580459] [2020-10-27 23:24:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:00,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:00,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:25:00,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:25:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:00,608 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:00,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364580459] [2020-10-27 23:25:00,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:00,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:00,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571459869] [2020-10-27 23:25:00,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:00,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:00,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:00,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:00,662 INFO L87 Difference]: Start difference. First operand 19764 states and 29108 transitions. Second operand 5 states. [2020-10-27 23:25:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:03,476 INFO L93 Difference]: Finished difference Result 39500 states and 58172 transitions. [2020-10-27 23:25:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:03,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 23:25:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:03,500 INFO L225 Difference]: With dead ends: 39500 [2020-10-27 23:25:03,500 INFO L226 Difference]: Without dead ends: 19759 [2020-10-27 23:25:03,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:25:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2020-10-27 23:25:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 19759. [2020-10-27 23:25:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19759 states. [2020-10-27 23:25:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19759 states to 19759 states and 29096 transitions. [2020-10-27 23:25:05,062 INFO L78 Accepts]: Start accepts. Automaton has 19759 states and 29096 transitions. Word has length 166 [2020-10-27 23:25:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:05,062 INFO L481 AbstractCegarLoop]: Abstraction has 19759 states and 29096 transitions. [2020-10-27 23:25:05,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19759 states and 29096 transitions. [2020-10-27 23:25:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 23:25:05,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:05,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:05,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:25:05,073 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -115064471, now seen corresponding path program 1 times [2020-10-27 23:25:05,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:05,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934277572] [2020-10-27 23:25:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 23:25:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:25:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:25:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:25:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 23:25:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:10,520 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:10,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934277572] [2020-10-27 23:25:10,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:10,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:10,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760590072] [2020-10-27 23:25:10,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:10,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:10,570 INFO L87 Difference]: Start difference. First operand 19759 states and 29096 transitions. Second operand 5 states. [2020-10-27 23:25:13,331 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 23:25:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:15,704 INFO L93 Difference]: Finished difference Result 51258 states and 75394 transitions. [2020-10-27 23:25:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:25:15,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-27 23:25:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:15,737 INFO L225 Difference]: With dead ends: 51258 [2020-10-27 23:25:15,737 INFO L226 Difference]: Without dead ends: 31656 [2020-10-27 23:25:15,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:25:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31656 states. [2020-10-27 23:25:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31656 to 31650. [2020-10-27 23:25:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31650 states. [2020-10-27 23:25:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31650 states to 31650 states and 45906 transitions. [2020-10-27 23:25:18,271 INFO L78 Accepts]: Start accepts. Automaton has 31650 states and 45906 transitions. Word has length 167 [2020-10-27 23:25:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:18,271 INFO L481 AbstractCegarLoop]: Abstraction has 31650 states and 45906 transitions. [2020-10-27 23:25:18,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 31650 states and 45906 transitions. [2020-10-27 23:25:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 23:25:18,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:18,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:18,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:25:18,289 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash 231235101, now seen corresponding path program 1 times [2020-10-27 23:25:18,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:18,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308692212] [2020-10-27 23:25:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:23,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 23:25:23,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:25:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:25:23,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:25:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:25:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:23,715 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:23,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308692212] [2020-10-27 23:25:23,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:23,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:23,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711892162] [2020-10-27 23:25:23,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:23,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:23,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:23,773 INFO L87 Difference]: Start difference. First operand 31650 states and 45906 transitions. Second operand 5 states. [2020-10-27 23:25:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:27,363 INFO L93 Difference]: Finished difference Result 56066 states and 81454 transitions. [2020-10-27 23:25:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:27,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-27 23:25:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:27,400 INFO L225 Difference]: With dead ends: 56066 [2020-10-27 23:25:27,400 INFO L226 Difference]: Without dead ends: 31650 [2020-10-27 23:25:27,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:25:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31650 states. [2020-10-27 23:25:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31650 to 31650. [2020-10-27 23:25:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31650 states. [2020-10-27 23:25:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31650 states to 31650 states and 45900 transitions. [2020-10-27 23:25:30,011 INFO L78 Accepts]: Start accepts. Automaton has 31650 states and 45900 transitions. Word has length 168 [2020-10-27 23:25:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:30,011 INFO L481 AbstractCegarLoop]: Abstraction has 31650 states and 45900 transitions. [2020-10-27 23:25:30,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:25:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 31650 states and 45900 transitions. [2020-10-27 23:25:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 23:25:30,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:30,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:30,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:25:30,024 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1868208536, now seen corresponding path program 1 times [2020-10-27 23:25:30,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:30,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379395298] [2020-10-27 23:25:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:30,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:31,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:35,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:35,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 23:25:35,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:25:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:25:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 23:25:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 23:25:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:35,413 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:35,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:35,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:35,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379395298] [2020-10-27 23:25:35,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:35,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:25:35,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481937388] [2020-10-27 23:25:35,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:25:35,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:35,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:25:35,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:25:35,473 INFO L87 Difference]: Start difference. First operand 31650 states and 45900 transitions. Second operand 4 states. [2020-10-27 23:25:38,702 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 23:25:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:42,218 INFO L93 Difference]: Finished difference Result 80432 states and 116649 transitions. [2020-10-27 23:25:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:42,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-27 23:25:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:42,417 INFO L225 Difference]: With dead ends: 80432 [2020-10-27 23:25:42,417 INFO L226 Difference]: Without dead ends: 49744 [2020-10-27 23:25:42,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49744 states. [2020-10-27 23:25:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49744 to 49741. [2020-10-27 23:25:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49741 states. [2020-10-27 23:25:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49741 states to 49741 states and 70991 transitions. [2020-10-27 23:25:46,465 INFO L78 Accepts]: Start accepts. Automaton has 49741 states and 70991 transitions. Word has length 169 [2020-10-27 23:25:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:46,465 INFO L481 AbstractCegarLoop]: Abstraction has 49741 states and 70991 transitions. [2020-10-27 23:25:46,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:25:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 49741 states and 70991 transitions. [2020-10-27 23:25:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 23:25:46,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:46,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:46,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:25:46,484 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1750008385, now seen corresponding path program 1 times [2020-10-27 23:25:46,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:46,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162289910] [2020-10-27 23:25:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 23:25:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 23:25:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:51,870 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:25:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:51,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:51,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162289910] [2020-10-27 23:25:51,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:51,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:25:51,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982108717] [2020-10-27 23:25:51,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:25:51,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:51,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:25:51,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:25:51,917 INFO L87 Difference]: Start difference. First operand 49741 states and 70991 transitions. Second operand 4 states. [2020-10-27 23:25:55,414 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 23:26:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:01,218 INFO L93 Difference]: Finished difference Result 137127 states and 197443 transitions. [2020-10-27 23:26:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:01,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-27 23:26:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:01,478 INFO L225 Difference]: With dead ends: 137127 [2020-10-27 23:26:01,478 INFO L226 Difference]: Without dead ends: 94495 [2020-10-27 23:26:01,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94495 states. [2020-10-27 23:26:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94495 to 94492. [2020-10-27 23:26:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94492 states. [2020-10-27 23:26:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94492 states to 94492 states and 134319 transitions. [2020-10-27 23:26:09,570 INFO L78 Accepts]: Start accepts. Automaton has 94492 states and 134319 transitions. Word has length 175 [2020-10-27 23:26:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:09,570 INFO L481 AbstractCegarLoop]: Abstraction has 94492 states and 134319 transitions. [2020-10-27 23:26:09,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 94492 states and 134319 transitions. [2020-10-27 23:26:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 23:26:09,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:09,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:26:09,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:26:09,840 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash -944140853, now seen corresponding path program 1 times [2020-10-27 23:26:09,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:09,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452020812] [2020-10-27 23:26:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:09,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 23:26:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:26:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:15,249 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:26:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:15,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:15,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:15,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:26:15,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:26:15,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452020812] [2020-10-27 23:26:15,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:15,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:15,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825189548] [2020-10-27 23:26:15,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:15,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:15,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:15,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:15,288 INFO L87 Difference]: Start difference. First operand 94492 states and 134319 transitions. Second operand 4 states. [2020-10-27 23:26:15,672 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-27 23:26:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:27,417 INFO L93 Difference]: Finished difference Result 198811 states and 289609 transitions. [2020-10-27 23:26:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:27,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-27 23:26:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:27,608 INFO L225 Difference]: With dead ends: 198811 [2020-10-27 23:26:27,608 INFO L226 Difference]: Without dead ends: 124145 [2020-10-27 23:26:27,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124145 states.