/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:09:09,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:09:09,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:09:09,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:09:09,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:09:09,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:09:09,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:09:09,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:09:09,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:09:09,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:09:09,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:09:09,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:09:09,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:09:09,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:09:09,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:09:09,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:09:09,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:09:09,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:09:09,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:09:09,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:09:09,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:09:09,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:09:09,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:09:09,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:09:09,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:09:09,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:09:09,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:09:09,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:09:09,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:09:09,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:09:09,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:09:09,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:09:09,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:09:09,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:09:09,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:09:09,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:09:09,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:09:09,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:09:09,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:09:09,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:09:09,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:09:09,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:09:10,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:09:10,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:09:10,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:09:10,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:09:10,011 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:09:10,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:09:10,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:09:10,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:09:10,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:09:10,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:09:10,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:09:10,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:09:10,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:09:10,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:09:10,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:09:10,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:09:10,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:09:10,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:09:10,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:09:10,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:09:10,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:09:10,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:09:10,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:09:10,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:09:10,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:09:10,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:09:10,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:09:10,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:09:10,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:09:10,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:09:10,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:09:10,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:09:10,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:09:10,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:09:10,447 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:09:10,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:09:10,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/331454b0a/d829ea991856428da4b953ee88c38e1e/FLAGcb048ceb7 [2020-10-29 14:09:11,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:09:11,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:09:11,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/331454b0a/d829ea991856428da4b953ee88c38e1e/FLAGcb048ceb7 [2020-10-29 14:09:11,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/331454b0a/d829ea991856428da4b953ee88c38e1e [2020-10-29 14:09:11,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:09:11,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:09:11,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:09:11,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:09:11,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:09:11,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:09:11" (1/1) ... [2020-10-29 14:09:11,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214ad69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:11, skipping insertion in model container [2020-10-29 14:09:11,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:09:11" (1/1) ... [2020-10-29 14:09:11,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:09:11,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:09:13,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:09:13,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:09:14,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:09:14,125 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:09:14,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14 WrapperNode [2020-10-29 14:09:14,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:09:14,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:09:14,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:09:14,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:09:14,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... [2020-10-29 14:09:14,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:09:14,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:09:14,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:09:14,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:09:14,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:09:14,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:09:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:09:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:09:14,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:09:14,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:09:14,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:09:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:09:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:09:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:09:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:09:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:09:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:09:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:09:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:09:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:09:14,491 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:09:14,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:09:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:09:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:09:18,061 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:09:18,061 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:09:18,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:09:18 BoogieIcfgContainer [2020-10-29 14:09:18,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:09:18,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:09:18,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:09:18,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:09:18,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:09:11" (1/3) ... [2020-10-29 14:09:18,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:09:18, skipping insertion in model container [2020-10-29 14:09:18,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:14" (2/3) ... [2020-10-29 14:09:18,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:09:18, skipping insertion in model container [2020-10-29 14:09:18,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:09:18" (3/3) ... [2020-10-29 14:09:18,074 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 14:09:18,086 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:09:18,092 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:09:18,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:09:18,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:09:18,140 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:09:18,140 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:09:18,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:09:18,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:09:18,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:09:18,141 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:09:18,141 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:09:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states. [2020-10-29 14:09:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 14:09:18,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:18,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:09:18,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash -864452950, now seen corresponding path program 1 times [2020-10-29 14:09:18,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:18,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122576184] [2020-10-29 14:09:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:23,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:23,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 14:09:23,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:09:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-29 14:09:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:23,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:09:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 14:09:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 14:09:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:09:25,274 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:09:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 14:09:25,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:25,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:25,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122576184] [2020-10-29 14:09:25,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:25,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:09:25,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818252977] [2020-10-29 14:09:25,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:09:25,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:25,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:09:25,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:09:25,614 INFO L87 Difference]: Start difference. First operand 1001 states. Second operand 4 states. [2020-10-29 14:09:26,695 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-29 14:09:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:35,045 INFO L93 Difference]: Finished difference Result 1739 states and 3102 transitions. [2020-10-29 14:09:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:09:35,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-29 14:09:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:35,089 INFO L225 Difference]: With dead ends: 1739 [2020-10-29 14:09:35,089 INFO L226 Difference]: Without dead ends: 1422 [2020-10-29 14:09:35,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2020-10-29 14:09:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1419. [2020-10-29 14:09:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-10-29 14:09:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2186 transitions. [2020-10-29 14:09:35,298 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2186 transitions. Word has length 321 [2020-10-29 14:09:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:35,305 INFO L481 AbstractCegarLoop]: Abstraction has 1419 states and 2186 transitions. [2020-10-29 14:09:35,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:09:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2186 transitions. [2020-10-29 14:09:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 14:09:35,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:35,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:09:35,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:09:35,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:35,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1662929519, now seen corresponding path program 1 times [2020-10-29 14:09:35,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:35,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522326046] [2020-10-29 14:09:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:36,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:40,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:40,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 14:09:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:09:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 14:09:40,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:40,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:09:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-29 14:09:40,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 14:09:40,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:41,702 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:09:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:41,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:41,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:41,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:09:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:41,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:41,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:42,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522326046] [2020-10-29 14:09:42,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:42,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:09:42,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146472355] [2020-10-29 14:09:42,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:09:42,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:42,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:09:42,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:09:42,059 INFO L87 Difference]: Start difference. First operand 1419 states and 2186 transitions. Second operand 4 states. [2020-10-29 14:09:42,976 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-29 14:09:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:49,860 INFO L93 Difference]: Finished difference Result 2754 states and 4288 transitions. [2020-10-29 14:09:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:09:49,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-29 14:09:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:49,877 INFO L225 Difference]: With dead ends: 2754 [2020-10-29 14:09:49,877 INFO L226 Difference]: Without dead ends: 2388 [2020-10-29 14:09:49,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-29 14:09:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2385. [2020-10-29 14:09:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2385 states. [2020-10-29 14:09:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3688 transitions. [2020-10-29 14:09:49,995 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3688 transitions. Word has length 321 [2020-10-29 14:09:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:49,996 INFO L481 AbstractCegarLoop]: Abstraction has 2385 states and 3688 transitions. [2020-10-29 14:09:49,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:09:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3688 transitions. [2020-10-29 14:09:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 14:09:50,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:50,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:09:50,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:09:50,005 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:50,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1652432454, now seen corresponding path program 1 times [2020-10-29 14:09:50,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:50,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418692282] [2020-10-29 14:09:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 14:09:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 14:09:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 14:09:55,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:55,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 14:09:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:09:56,349 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:09:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:56,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:56,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:09:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:56,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:56,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418692282] [2020-10-29 14:09:56,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:56,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:56,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428873113] [2020-10-29 14:09:56,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:56,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:56,711 INFO L87 Difference]: Start difference. First operand 2385 states and 3688 transitions. Second operand 5 states. [2020-10-29 14:10:05,120 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:10:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:07,756 INFO L93 Difference]: Finished difference Result 7068 states and 10921 transitions. [2020-10-29 14:10:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:07,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-29 14:10:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:07,784 INFO L225 Difference]: With dead ends: 7068 [2020-10-29 14:10:07,784 INFO L226 Difference]: Without dead ends: 4698 [2020-10-29 14:10:07,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-29 14:10:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4543. [2020-10-29 14:10:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4543 states. [2020-10-29 14:10:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 7007 transitions. [2020-10-29 14:10:07,980 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 7007 transitions. Word has length 321 [2020-10-29 14:10:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:07,981 INFO L481 AbstractCegarLoop]: Abstraction has 4543 states and 7007 transitions. [2020-10-29 14:10:07,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 7007 transitions. [2020-10-29 14:10:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 14:10:07,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:07,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:10:07,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:10:07,994 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:07,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1314669983, now seen corresponding path program 1 times [2020-10-29 14:10:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840660787] [2020-10-29 14:10:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:13,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 14:10:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:10:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 14:10:13,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 14:10:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:14,159 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:10:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840660787] [2020-10-29 14:10:14,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:14,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:14,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874594209] [2020-10-29 14:10:14,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:14,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:14,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:14,400 INFO L87 Difference]: Start difference. First operand 4543 states and 7007 transitions. Second operand 5 states. [2020-10-29 14:10:22,608 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:10:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:25,103 INFO L93 Difference]: Finished difference Result 13442 states and 20701 transitions. [2020-10-29 14:10:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:25,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-29 14:10:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:25,147 INFO L225 Difference]: With dead ends: 13442 [2020-10-29 14:10:25,147 INFO L226 Difference]: Without dead ends: 8921 [2020-10-29 14:10:25,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2020-10-29 14:10:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8820. [2020-10-29 14:10:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8820 states. [2020-10-29 14:10:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8820 states to 8820 states and 13519 transitions. [2020-10-29 14:10:25,578 INFO L78 Accepts]: Start accepts. Automaton has 8820 states and 13519 transitions. Word has length 323 [2020-10-29 14:10:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:25,578 INFO L481 AbstractCegarLoop]: Abstraction has 8820 states and 13519 transitions. [2020-10-29 14:10:25,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8820 states and 13519 transitions. [2020-10-29 14:10:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 14:10:25,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:25,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:10:25,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:10:25,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:25,599 INFO L82 PathProgramCache]: Analyzing trace with hash 149491586, now seen corresponding path program 1 times [2020-10-29 14:10:25,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:25,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50165554] [2020-10-29 14:10:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:30,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 14:10:30,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:10:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:10:30,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:30,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 14:10:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:31,626 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:10:31,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:31,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:31,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50165554] [2020-10-29 14:10:31,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:31,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:31,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809501509] [2020-10-29 14:10:31,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:31,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:31,835 INFO L87 Difference]: Start difference. First operand 8820 states and 13519 transitions. Second operand 5 states. [2020-10-29 14:10:40,026 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:10:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:42,591 INFO L93 Difference]: Finished difference Result 26000 states and 39783 transitions. [2020-10-29 14:10:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:42,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-29 14:10:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:42,650 INFO L225 Difference]: With dead ends: 26000 [2020-10-29 14:10:42,651 INFO L226 Difference]: Without dead ends: 17247 [2020-10-29 14:10:42,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17247 states. [2020-10-29 14:10:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17247 to 17070. [2020-10-29 14:10:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17070 states. [2020-10-29 14:10:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 25991 transitions. [2020-10-29 14:10:43,549 INFO L78 Accepts]: Start accepts. Automaton has 17070 states and 25991 transitions. Word has length 325 [2020-10-29 14:10:43,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:43,550 INFO L481 AbstractCegarLoop]: Abstraction has 17070 states and 25991 transitions. [2020-10-29 14:10:43,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 17070 states and 25991 transitions. [2020-10-29 14:10:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 14:10:43,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:43,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:10:43,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:10:43,583 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:43,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1726940631, now seen corresponding path program 1 times [2020-10-29 14:10:43,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:43,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871738441] [2020-10-29 14:10:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:48,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 14:10:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:49,591 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:10:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:49,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871738441] [2020-10-29 14:10:49,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:49,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:49,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940273868] [2020-10-29 14:10:49,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:49,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:49,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:49,815 INFO L87 Difference]: Start difference. First operand 17070 states and 25991 transitions. Second operand 5 states. [2020-10-29 14:10:58,793 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:11:01,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:01,669 INFO L93 Difference]: Finished difference Result 50330 states and 76511 transitions. [2020-10-29 14:11:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:01,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-29 14:11:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:01,743 INFO L225 Difference]: With dead ends: 50330 [2020-10-29 14:11:01,744 INFO L226 Difference]: Without dead ends: 33389 [2020-10-29 14:11:01,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33389 states. [2020-10-29 14:11:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33389 to 33168. [2020-10-29 14:11:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33168 states. [2020-10-29 14:11:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33168 states to 33168 states and 50169 transitions. [2020-10-29 14:11:03,582 INFO L78 Accepts]: Start accepts. Automaton has 33168 states and 50169 transitions. Word has length 327 [2020-10-29 14:11:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:03,582 INFO L481 AbstractCegarLoop]: Abstraction has 33168 states and 50169 transitions. [2020-10-29 14:11:03,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 33168 states and 50169 transitions. [2020-10-29 14:11:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 14:11:03,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:03,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:11:03,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:11:03,645 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1299586605, now seen corresponding path program 1 times [2020-10-29 14:11:03,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:03,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437039576] [2020-10-29 14:11:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:04,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:08,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 14:11:08,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:09,664 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:11:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:09,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:09,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:09,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:09,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437039576] [2020-10-29 14:11:09,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:09,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:09,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700833564] [2020-10-29 14:11:09,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:09,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:09,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:09,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:09,842 INFO L87 Difference]: Start difference. First operand 33168 states and 50169 transitions. Second operand 5 states. [2020-10-29 14:11:19,195 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:11:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:22,518 INFO L93 Difference]: Finished difference Result 97590 states and 147317 transitions. [2020-10-29 14:11:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:22,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-29 14:11:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:22,667 INFO L225 Difference]: With dead ends: 97590 [2020-10-29 14:11:22,667 INFO L226 Difference]: Without dead ends: 64737 [2020-10-29 14:11:22,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64737 states. [2020-10-29 14:11:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64737 to 64516. [2020-10-29 14:11:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64516 states. [2020-10-29 14:11:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64516 states to 64516 states and 96837 transitions. [2020-10-29 14:11:25,484 INFO L78 Accepts]: Start accepts. Automaton has 64516 states and 96837 transitions. Word has length 329 [2020-10-29 14:11:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:25,484 INFO L481 AbstractCegarLoop]: Abstraction has 64516 states and 96837 transitions. [2020-10-29 14:11:25,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64516 states and 96837 transitions. [2020-10-29 14:11:25,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-29 14:11:25,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:25,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:11:25,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:11:25,578 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:25,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1456073178, now seen corresponding path program 1 times [2020-10-29 14:11:25,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:25,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747748508] [2020-10-29 14:11:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:30,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 14:11:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:11:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 14:11:30,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:30,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 14:11:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:31,618 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:11:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:31,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747748508] [2020-10-29 14:11:31,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:31,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:31,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745919928] [2020-10-29 14:11:31,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:31,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:31,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:31,806 INFO L87 Difference]: Start difference. First operand 64516 states and 96837 transitions. Second operand 5 states. [2020-10-29 14:11:42,598 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:11:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:46,598 INFO L93 Difference]: Finished difference Result 190479 states and 285415 transitions. [2020-10-29 14:11:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:46,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-29 14:11:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:46,775 INFO L225 Difference]: With dead ends: 190479 [2020-10-29 14:11:46,776 INFO L226 Difference]: Without dead ends: 126330 [2020-10-29 14:11:46,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126330 states. [2020-10-29 14:11:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126330 to 126109. [2020-10-29 14:11:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126109 states. [2020-10-29 14:11:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126109 states to 126109 states and 187807 transitions. [2020-10-29 14:11:52,039 INFO L78 Accepts]: Start accepts. Automaton has 126109 states and 187807 transitions. Word has length 331 [2020-10-29 14:11:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:52,040 INFO L481 AbstractCegarLoop]: Abstraction has 126109 states and 187807 transitions. [2020-10-29 14:11:52,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 126109 states and 187807 transitions. [2020-10-29 14:11:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 14:11:52,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:52,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:11:52,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:11:52,421 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 481159274, now seen corresponding path program 1 times [2020-10-29 14:11:52,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:52,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495468753] [2020-10-29 14:11:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 14:11:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:58,566 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:11:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:58,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:58,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495468753] [2020-10-29 14:11:58,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:58,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:58,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705670484] [2020-10-29 14:11:58,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:58,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:58,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:58,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:58,883 INFO L87 Difference]: Start difference. First operand 126109 states and 187807 transitions. Second operand 5 states. [2020-10-29 14:12:15,771 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-29 14:12:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:12:22,428 INFO L93 Difference]: Finished difference Result 358659 states and 533163 transitions. [2020-10-29 14:12:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:12:22,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-29 14:12:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:12:22,946 INFO L225 Difference]: With dead ends: 358659 [2020-10-29 14:12:22,946 INFO L226 Difference]: Without dead ends: 233374 [2020-10-29 14:12:23,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:12:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233374 states. [2020-10-29 14:12:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233374 to 233153. [2020-10-29 14:12:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233153 states. [2020-10-29 14:12:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233153 states to 233153 states and 344427 transitions. [2020-10-29 14:12:35,781 INFO L78 Accepts]: Start accepts. Automaton has 233153 states and 344427 transitions. Word has length 333 [2020-10-29 14:12:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:35,781 INFO L481 AbstractCegarLoop]: Abstraction has 233153 states and 344427 transitions. [2020-10-29 14:12:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:12:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 233153 states and 344427 transitions. [2020-10-29 14:12:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-29 14:12:35,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:35,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:12:35,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:12:35,940 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:35,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1457789888, now seen corresponding path program 1 times [2020-10-29 14:12:35,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:35,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308528490] [2020-10-29 14:12:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-29 14:12:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:12:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 14:12:41,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:41,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 14:12:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:41,992 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-29 14:12:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:42,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:42,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:42,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:12:42,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308528490] [2020-10-29 14:12:42,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:42,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427656566] [2020-10-29 14:12:42,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:42,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:42,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:42,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:42,217 INFO L87 Difference]: Start difference. First operand 233153 states and 344427 transitions. Second operand 5 states.