/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/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:23:58,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:23:58,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:23:58,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:23:58,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:23:58,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:23:58,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:23:58,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:23:58,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:23:58,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:23:58,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:23:58,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:23:58,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:23:58,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:23:58,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:23:58,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:23:58,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:23:58,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:23:58,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:23:58,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:23:58,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:23:58,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:23:58,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:23:58,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:23:58,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:23:58,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:23:58,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:23:58,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:23:58,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:23:58,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:23:58,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:23:58,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:23:58,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:23:58,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:23:58,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:23:58,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:23:58,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:23:58,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:23:58,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:23:58,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:23:58,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:23:58,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:23:58,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:23:58,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:23:58,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:23:58,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:23:58,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:23:58,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:23:58,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:23:58,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:23:58,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:23:58,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:23:58,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:23:58,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:23:58,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:23:58,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:23:58,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:23:58,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:23:58,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:23:58,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:23:58,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:23:58,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:23:58,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:23:58,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:23:58,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:23:58,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:23:58,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:23:58,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:23:58,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:23:58,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:23:58,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:23:58,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:23:58,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:23:58,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:23:58,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:23:58,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:23:58,958 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:23:58,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:23:59,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38771509/b0dbeea4f5f448e796298036a481bf12/FLAG6c48ba876 [2020-10-29 12:23:59,962 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:23:59,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:24:00,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38771509/b0dbeea4f5f448e796298036a481bf12/FLAG6c48ba876 [2020-10-29 12:24:00,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e38771509/b0dbeea4f5f448e796298036a481bf12 [2020-10-29 12:24:00,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:24:00,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:24:00,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:24:00,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:24:00,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:24:00,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:00,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecbe031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00, skipping insertion in model container [2020-10-29 12:24:00,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:00,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:24:00,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:24:00,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:24:00,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:24:00,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:24:00,965 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:24:00,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00 WrapperNode [2020-10-29 12:24:00,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:24:00,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:24:00,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:24:00,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:24:00,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:00,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... [2020-10-29 12:24:01,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:24:01,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:24:01,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:24:01,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:24:01,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:24:01,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:24:01,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:24:01,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:24:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:24:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:24:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:24:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:24:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:24:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:24:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:24:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:24:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:24:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:24:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:24:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:24:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:24:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:24:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:24:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:24:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:24:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:24:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:24:03,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:24:03,586 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:24:03,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:24:03 BoogieIcfgContainer [2020-10-29 12:24:03,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:24:03,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:24:03,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:24:03,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:24:03,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:24:00" (1/3) ... [2020-10-29 12:24:03,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598230a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:24:03, skipping insertion in model container [2020-10-29 12:24:03,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:24:00" (2/3) ... [2020-10-29 12:24:03,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598230a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:24:03, skipping insertion in model container [2020-10-29 12:24:03,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:24:03" (3/3) ... [2020-10-29 12:24:03,598 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2020-10-29 12:24:03,610 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:24:03,615 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:24:03,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:24:03,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:24:03,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:24:03,662 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:24:03,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:24:03,662 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:24:03,662 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:24:03,662 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:24:03,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:24:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2020-10-29 12:24:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:24:03,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:03,728 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] [2020-10-29 12:24:03,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash -615932706, now seen corresponding path program 1 times [2020-10-29 12:24:03,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:03,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171629221] [2020-10-29 12:24:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:05,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:05,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:24:05,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-29 12:24:05,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:05,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 12:24:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:24:06,681 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:06,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:06,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:06,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 12:24:06,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:06,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:06,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:06,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:24:07,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 12:24:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:07,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:24:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:24:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:07,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:24:07,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:24:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:07,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:24:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:24:07,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:24:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:24:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:24:07,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:24:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:24:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:24:07,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:24:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:24:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:24:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:24:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:24:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:07,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:07,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:24:07,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:07,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:07,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171629221] [2020-10-29 12:24:07,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:07,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:24:07,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545628468] [2020-10-29 12:24:07,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:24:07,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:07,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:24:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:24:07,782 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 8 states. [2020-10-29 12:24:11,144 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:11,891 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:12,754 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:13,535 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:14,303 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:24:15,130 INFO L93 Difference]: Finished difference Result 974 states and 1710 transitions. [2020-10-29 12:24:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:24:15,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-29 12:24:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:24:15,157 INFO L225 Difference]: With dead ends: 974 [2020-10-29 12:24:15,157 INFO L226 Difference]: Without dead ends: 778 [2020-10-29 12:24:15,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:24:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-29 12:24:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 723. [2020-10-29 12:24:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-29 12:24:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1302 transitions. [2020-10-29 12:24:15,462 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1302 transitions. Word has length 183 [2020-10-29 12:24:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:24:15,463 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1302 transitions. [2020-10-29 12:24:15,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:24:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1302 transitions. [2020-10-29 12:24:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:24:15,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:15,471 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] [2020-10-29 12:24:15,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:24:15,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:15,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1323229340, now seen corresponding path program 1 times [2020-10-29 12:24:15,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:15,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727685468] [2020-10-29 12:24:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:18,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:18,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:24:18,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3099 [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:24:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:24:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:20,182 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:20,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:20,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:20,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:20,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:24:20,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:20,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:20,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:21,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:24:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:21,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:24:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:21,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:24:21,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:21,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:24:21,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:24:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 12:24:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:24:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:24:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:24:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:24:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:24:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:21,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:24:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:24:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:24:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:24:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:24:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:24:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:21,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:21,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:21,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:21,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:21,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727685468] [2020-10-29 12:24:21,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:21,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:24:21,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89655665] [2020-10-29 12:24:21,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:24:21,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:21,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:24:21,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:24:21,759 INFO L87 Difference]: Start difference. First operand 723 states and 1302 transitions. Second operand 14 states. [2020-10-29 12:24:31,901 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:24:33,000 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 390 [2020-10-29 12:24:34,259 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:24:35,340 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:24:36,350 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:37,165 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:38,043 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:38,791 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:39,553 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:24:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:24:40,570 INFO L93 Difference]: Finished difference Result 969 states and 1698 transitions. [2020-10-29 12:24:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:24:40,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-29 12:24:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:24:40,579 INFO L225 Difference]: With dead ends: 969 [2020-10-29 12:24:40,579 INFO L226 Difference]: Without dead ends: 778 [2020-10-29 12:24:40,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:24:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-29 12:24:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 723. [2020-10-29 12:24:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-29 12:24:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1262 transitions. [2020-10-29 12:24:40,733 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1262 transitions. Word has length 183 [2020-10-29 12:24:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:24:40,733 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1262 transitions. [2020-10-29 12:24:40,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:24:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1262 transitions. [2020-10-29 12:24:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 12:24:40,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:24:40,738 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] [2020-10-29 12:24:40,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:24:40,738 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:24:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:24:40,739 INFO L82 PathProgramCache]: Analyzing trace with hash 976178631, now seen corresponding path program 1 times [2020-10-29 12:24:40,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:24:40,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329202667] [2020-10-29 12:24:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:24:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 12:24:45,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:24:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 12:24:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:45,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-29 12:24:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:24:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:24:47,263 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:24:47,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:24:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:47,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:47,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:47,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:24:47,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:24:47,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:47,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:24:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:47,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:47,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:47,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 12:24:47,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 12:24:47,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:47,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 12:24:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:24:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-29 12:24:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:47,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:47,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:24:47,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:47,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:24:47,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:47,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:24:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 12:24:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:47,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:47,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:24:47,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:47,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 12:24:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:24:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:24:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:24:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:48,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:48,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:48,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:24:48,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:48,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:24:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:24:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:24:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 12:24:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:48,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:48,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 12:24:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:24:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:24:48,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:24:48,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:24:48,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:24:48,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:24:48,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:24:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:24:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329202667] [2020-10-29 12:24:48,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:24:48,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:24:48,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663395097] [2020-10-29 12:24:48,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:24:48,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:24:48,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:24:48,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:24:48,381 INFO L87 Difference]: Start difference. First operand 723 states and 1262 transitions. Second operand 11 states. [2020-10-29 12:24:49,521 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:24:57,185 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:24:57,943 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:24:58,817 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:24:59,639 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:00,024 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:25:00,722 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:25:01,107 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:02,766 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:03,334 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:03,897 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:05,296 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-29 12:25:05,623 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:25:05,977 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:25:06,392 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:25:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:25:06,687 INFO L93 Difference]: Finished difference Result 1209 states and 2048 transitions. [2020-10-29 12:25:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:25:06,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2020-10-29 12:25:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:25:06,702 INFO L225 Difference]: With dead ends: 1209 [2020-10-29 12:25:06,702 INFO L226 Difference]: Without dead ends: 1024 [2020-10-29 12:25:06,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:25:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-29 12:25:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 907. [2020-10-29 12:25:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-10-29 12:25:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1565 transitions. [2020-10-29 12:25:06,904 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1565 transitions. Word has length 222 [2020-10-29 12:25:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:25:06,906 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1565 transitions. [2020-10-29 12:25:06,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:25:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1565 transitions. [2020-10-29 12:25:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 12:25:06,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:25:06,912 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] [2020-10-29 12:25:06,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:25:06,912 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:25:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:25:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2131780053, now seen corresponding path program 1 times [2020-10-29 12:25:06,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:25:06,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701309112] [2020-10-29 12:25:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:25:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:12,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 12:25:12,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:25:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 12:25:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:13,393 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:25:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:25:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:13,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:13,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:25:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:13,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:13,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 12:25:13,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 12:25:13,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:13,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:13,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:25:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-29 12:25:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:25:14,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:25:14,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:14,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:25:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 12:25:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:14,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:25:14,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 12:25:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:14,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:25:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:25:14,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:25:14,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:25:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:25:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:25:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:25:14,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:25:14,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:25:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:25:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:25:14,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-29 12:25:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:25:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-29 12:25:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:14,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:25:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:25:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:25:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:14,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:25:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:25:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:25:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:25:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:25:14,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701309112] [2020-10-29 12:25:14,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:25:14,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:25:14,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171536242] [2020-10-29 12:25:14,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:25:14,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:25:14,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:25:14,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:25:14,806 INFO L87 Difference]: Start difference. First operand 907 states and 1565 transitions. Second operand 11 states. [2020-10-29 12:25:15,980 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:25:17,191 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-29 12:25:19,021 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:25:21,193 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-29 12:25:40,300 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:25:40,884 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:41,367 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:42,187 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:42,534 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:43,184 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:44,439 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:44,797 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:45,414 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:46,790 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:47,124 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:47,754 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:48,647 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:49,675 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:25:50,035 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:25:50,675 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:25:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:25:53,047 INFO L93 Difference]: Finished difference Result 3621 states and 6216 transitions. [2020-10-29 12:25:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:25:53,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 226 [2020-10-29 12:25:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:25:53,069 INFO L225 Difference]: With dead ends: 3621 [2020-10-29 12:25:53,069 INFO L226 Difference]: Without dead ends: 2791 [2020-10-29 12:25:53,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:25:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2020-10-29 12:25:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2517. [2020-10-29 12:25:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2517 states. [2020-10-29 12:25:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4335 transitions. [2020-10-29 12:25:53,635 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4335 transitions. Word has length 226 [2020-10-29 12:25:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:25:53,636 INFO L481 AbstractCegarLoop]: Abstraction has 2517 states and 4335 transitions. [2020-10-29 12:25:53,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:25:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4335 transitions. [2020-10-29 12:25:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 12:25:53,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:25:53,645 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] [2020-10-29 12:25:53,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:25:53,646 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:25:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:25:53,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1084676304, now seen corresponding path program 1 times [2020-10-29 12:25:53,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:25:53,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928518397] [2020-10-29 12:25:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:25:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:25:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:25:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:25:58,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 12:25:58,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 12:25:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,011 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:26:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:26:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-29 12:26:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:00,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:26:00,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 12:26:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:00,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 12:26:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:26:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:00,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:26:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 12:26:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:01,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:01,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:26:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:01,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:01,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:01,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:01,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928518397] [2020-10-29 12:26:01,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:01,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:26:01,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664659016] [2020-10-29 12:26:01,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:26:01,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:01,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:26:01,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:26:01,346 INFO L87 Difference]: Start difference. First operand 2517 states and 4335 transitions. Second operand 11 states. [2020-10-29 12:26:02,491 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:26:03,735 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:26:04,989 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:26:07,174 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:26:28,618 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:26:29,184 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:29,571 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:30,351 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:30,763 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:31,316 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:32,428 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:32,911 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:33,507 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:34,588 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:35,153 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:35,679 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:36,476 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:37,466 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:26:37,912 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:26:38,247 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:40,255 INFO L93 Difference]: Finished difference Result 10405 states and 17839 transitions. [2020-10-29 12:26:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:26:40,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-10-29 12:26:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:40,300 INFO L225 Difference]: With dead ends: 10405 [2020-10-29 12:26:40,300 INFO L226 Difference]: Without dead ends: 8051 [2020-10-29 12:26:40,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:26:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8051 states. [2020-10-29 12:26:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8051 to 7297. [2020-10-29 12:26:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7297 states. [2020-10-29 12:26:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 12535 transitions. [2020-10-29 12:26:41,871 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 12535 transitions. Word has length 228 [2020-10-29 12:26:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:41,872 INFO L481 AbstractCegarLoop]: Abstraction has 7297 states and 12535 transitions. [2020-10-29 12:26:41,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:26:41,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 12535 transitions. [2020-10-29 12:26:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 12:26:41,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:41,893 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] [2020-10-29 12:26:41,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:26:41,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:41,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1099772051, now seen corresponding path program 1 times [2020-10-29 12:26:41,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:41,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674235104] [2020-10-29 12:26:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:47,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 12:26:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:26:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 12:26:47,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:47,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:26:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:26:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 12:26:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,179 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:26:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:26:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-29 12:26:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:48,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 12:26:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:48,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-29 12:26:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:26:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:26:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:26:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 12:26:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:26:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:49,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674235104] [2020-10-29 12:26:49,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:49,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:26:49,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513170107] [2020-10-29 12:26:49,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:26:49,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:26:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:26:49,321 INFO L87 Difference]: Start difference. First operand 7297 states and 12535 transitions. Second operand 11 states. [2020-10-29 12:26:50,469 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:26:51,679 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-29 12:26:52,933 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:26:56,571 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-29 12:27:19,119 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:27:19,682 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:20,153 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:20,957 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:21,394 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:21,962 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:23,072 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:23,471 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:24,119 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:25,420 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:25,771 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:26,446 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:26,929 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:28,384 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:28,879 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:29,452 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:31,497 INFO L93 Difference]: Finished difference Result 28199 states and 48252 transitions. [2020-10-29 12:27:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:27:31,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-10-29 12:27:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:31,591 INFO L225 Difference]: With dead ends: 28199 [2020-10-29 12:27:31,592 INFO L226 Difference]: Without dead ends: 21129 [2020-10-29 12:27:31,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:27:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21129 states. [2020-10-29 12:27:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21129 to 19426. [2020-10-29 12:27:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19426 states. [2020-10-29 12:27:35,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19426 states to 19426 states and 33198 transitions. [2020-10-29 12:27:35,471 INFO L78 Accepts]: Start accepts. Automaton has 19426 states and 33198 transitions. Word has length 228 [2020-10-29 12:27:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:35,472 INFO L481 AbstractCegarLoop]: Abstraction has 19426 states and 33198 transitions. [2020-10-29 12:27:35,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 19426 states and 33198 transitions. [2020-10-29 12:27:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 12:27:35,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:35,523 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] [2020-10-29 12:27:35,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:27:35,523 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2039361513, now seen corresponding path program 1 times [2020-10-29 12:27:35,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:35,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909438148] [2020-10-29 12:27:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:40,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 12:27:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:27:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-29 12:27:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0