/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:08:19,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:08:19,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:08:19,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:08:19,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:08:19,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:08:19,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:08:19,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:08:19,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:08:19,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:08:19,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:08:19,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:08:19,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:08:19,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:08:19,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:08:19,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:08:19,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:08:19,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:08:19,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:08:19,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:08:19,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:08:19,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:08:19,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:08:19,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:08:19,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:08:19,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:08:19,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:08:19,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:08:19,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:08:19,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:08:19,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:08:19,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:08:19,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:08:19,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:08:19,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:08:19,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:08:19,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:08:19,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:08:19,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:08:19,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:08:19,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:08:19,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:08:19,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:08:19,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:08:19,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:08:19,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:08:19,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:08:19,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:08:19,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:08:19,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:08:19,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:08:19,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:08:19,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:08:19,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:08:19,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:08:19,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:08:19,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:08:19,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:08:19,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:08:19,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:08:19,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:08:19,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:08:19,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:08:19,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:08:19,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:08:19,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:08:19,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:08:19,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:08:19,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:08:19,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:08:19,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:08:19,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:08:19,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:08:19,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:08:19,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:08:19,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:08:19,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:08:19,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:08:19,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8330526f/716fba5f44de4745944ba8c7e9ad42a9/FLAG904b8657c [2020-10-27 05:08:20,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:08:20,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:08:20,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8330526f/716fba5f44de4745944ba8c7e9ad42a9/FLAG904b8657c [2020-10-27 05:08:20,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8330526f/716fba5f44de4745944ba8c7e9ad42a9 [2020-10-27 05:08:20,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:08:20,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:08:20,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:08:20,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:08:20,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:08:20,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:20" (1/1) ... [2020-10-27 05:08:20,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33aca027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:20, skipping insertion in model container [2020-10-27 05:08:20,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:20" (1/1) ... [2020-10-27 05:08:20,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:08:21,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:08:21,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:08:21,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:08:21,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:08:21,977 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:08:21,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21 WrapperNode [2020-10-27 05:08:21,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:08:21,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:08:21,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:08:21,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:08:21,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:21,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... [2020-10-27 05:08:22,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:08:22,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:08:22,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:08:22,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:08:22,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:08:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:08:22,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:08:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:08:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:08:22,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:08:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:08:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:08:22,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:08:22,255 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:08:22,256 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:08:22,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:08:25,494 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:08:25,495 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:08:25,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:25 BoogieIcfgContainer [2020-10-27 05:08:25,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:08:25,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:08:25,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:08:25,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:08:25,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:08:20" (1/3) ... [2020-10-27 05:08:25,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4e486a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:25, skipping insertion in model container [2020-10-27 05:08:25,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:21" (2/3) ... [2020-10-27 05:08:25,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4e486a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:25, skipping insertion in model container [2020-10-27 05:08:25,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:25" (3/3) ... [2020-10-27 05:08:25,507 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:08:25,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:08:25,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:08:25,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:08:25,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:08:25,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:08:25,570 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:08:25,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:08:25,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:08:25,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:08:25,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:08:25,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:08:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-27 05:08:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 05:08:25,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:25,633 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] [2020-10-27 05:08:25,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-27 05:08:25,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:25,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187061519] [2020-10-27 05:08:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:31,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 05:08:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:08:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 05:08:31,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:08:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:08:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:08:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:08:33,452 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:33,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:08:33,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:33,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:33,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187061519] [2020-10-27 05:08:33,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:33,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:08:33,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195793395] [2020-10-27 05:08:33,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:08:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:33,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:08:33,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:08:33,717 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 4 states. [2020-10-27 05:08:35,876 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:08:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:43,020 INFO L93 Difference]: Finished difference Result 1122 states and 1998 transitions. [2020-10-27 05:08:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:08:43,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-27 05:08:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:43,048 INFO L225 Difference]: With dead ends: 1122 [2020-10-27 05:08:43,048 INFO L226 Difference]: Without dead ends: 916 [2020-10-27 05:08:43,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:43,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-27 05:08:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 913. [2020-10-27 05:08:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-27 05:08:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1585 transitions. [2020-10-27 05:08:43,210 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1585 transitions. Word has length 209 [2020-10-27 05:08:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:43,211 INFO L481 AbstractCegarLoop]: Abstraction has 913 states and 1585 transitions. [2020-10-27 05:08:43,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:08:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1585 transitions. [2020-10-27 05:08:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:08:43,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:43,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:43,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:08:43,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash 658513969, now seen corresponding path program 1 times [2020-10-27 05:08:43,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:43,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945945621] [2020-10-27 05:08:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:08:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:08:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 05:08:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 05:08:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:50,827 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:50,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:50,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:50,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:08:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:51,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945945621] [2020-10-27 05:08:51,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:51,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:51,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814922318] [2020-10-27 05:08:51,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:51,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:51,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:51,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:51,048 INFO L87 Difference]: Start difference. First operand 913 states and 1585 transitions. Second operand 5 states. [2020-10-27 05:09:01,204 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:01,385 INFO L93 Difference]: Finished difference Result 2669 states and 4636 transitions. [2020-10-27 05:09:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:01,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:09:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:01,400 INFO L225 Difference]: With dead ends: 2669 [2020-10-27 05:09:01,400 INFO L226 Difference]: Without dead ends: 1805 [2020-10-27 05:09:01,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2020-10-27 05:09:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1802. [2020-10-27 05:09:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-27 05:09:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3123 transitions. [2020-10-27 05:09:01,542 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3123 transitions. Word has length 213 [2020-10-27 05:09:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:01,544 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 3123 transitions. [2020-10-27 05:09:01,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3123 transitions. [2020-10-27 05:09:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:09:01,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:01,552 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] [2020-10-27 05:09:01,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:09:01,552 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 515985860, now seen corresponding path program 1 times [2020-10-27 05:09:01,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:01,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886188766] [2020-10-27 05:09:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:06,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:09:06,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:09:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 05:09:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:09:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:09,016 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:09,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:09,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:09,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:09,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:09:09,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:09,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:09,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886188766] [2020-10-27 05:09:09,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:09,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:09,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459223736] [2020-10-27 05:09:09,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:09,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:09,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:09,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:09,195 INFO L87 Difference]: Start difference. First operand 1802 states and 3123 transitions. Second operand 5 states. [2020-10-27 05:09:19,333 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:19,627 INFO L93 Difference]: Finished difference Result 5144 states and 8891 transitions. [2020-10-27 05:09:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:19,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:09:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:19,647 INFO L225 Difference]: With dead ends: 5144 [2020-10-27 05:09:19,648 INFO L226 Difference]: Without dead ends: 3485 [2020-10-27 05:09:19,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2020-10-27 05:09:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3482. [2020-10-27 05:09:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3482 states. [2020-10-27 05:09:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5999 transitions. [2020-10-27 05:09:19,869 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5999 transitions. Word has length 213 [2020-10-27 05:09:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:19,870 INFO L481 AbstractCegarLoop]: Abstraction has 3482 states and 5999 transitions. [2020-10-27 05:09:19,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5999 transitions. [2020-10-27 05:09:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:09:19,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:19,881 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] [2020-10-27 05:09:19,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:09:19,882 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:19,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1141865751, now seen corresponding path program 1 times [2020-10-27 05:09:19,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:19,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330920002] [2020-10-27 05:09:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:25,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:25,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:09:25,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:09:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 05:09:25,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:09:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:09:25,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 05:09:25,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:27,280 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 05:09:27,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:09:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:09:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:27,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330920002] [2020-10-27 05:09:27,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:27,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:09:27,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135302190] [2020-10-27 05:09:27,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:09:27,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:27,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:09:27,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:09:27,480 INFO L87 Difference]: Start difference. First operand 3482 states and 5999 transitions. Second operand 8 states. [2020-10-27 05:09:29,803 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:38,846 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:09:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:39,854 INFO L93 Difference]: Finished difference Result 6738 states and 11496 transitions. [2020-10-27 05:09:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:09:39,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-27 05:09:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:39,882 INFO L225 Difference]: With dead ends: 6738 [2020-10-27 05:09:39,883 INFO L226 Difference]: Without dead ends: 5321 [2020-10-27 05:09:39,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:09:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2020-10-27 05:09:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 3520. [2020-10-27 05:09:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2020-10-27 05:09:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 6039 transitions. [2020-10-27 05:09:40,160 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 6039 transitions. Word has length 214 [2020-10-27 05:09:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:40,160 INFO L481 AbstractCegarLoop]: Abstraction has 3520 states and 6039 transitions. [2020-10-27 05:09:40,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:09:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 6039 transitions. [2020-10-27 05:09:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:09:40,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:40,177 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] [2020-10-27 05:09:40,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:09:40,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:40,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1338623845, now seen corresponding path program 1 times [2020-10-27 05:09:40,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:40,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82637389] [2020-10-27 05:09:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:45,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:09:45,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 05:09:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:47,562 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:47,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:09:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:47,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82637389] [2020-10-27 05:09:47,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:47,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:47,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598806921] [2020-10-27 05:09:47,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:47,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:47,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:47,858 INFO L87 Difference]: Start difference. First operand 3520 states and 6039 transitions. Second operand 5 states. [2020-10-27 05:09:58,097 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:58,329 INFO L93 Difference]: Finished difference Result 10228 states and 17519 transitions. [2020-10-27 05:09:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:58,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 05:09:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:58,365 INFO L225 Difference]: With dead ends: 10228 [2020-10-27 05:09:58,365 INFO L226 Difference]: Without dead ends: 6899 [2020-10-27 05:09:58,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2020-10-27 05:09:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6896. [2020-10-27 05:09:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-27 05:09:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 11778 transitions. [2020-10-27 05:09:59,036 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 11778 transitions. Word has length 214 [2020-10-27 05:09:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:59,041 INFO L481 AbstractCegarLoop]: Abstraction has 6896 states and 11778 transitions. [2020-10-27 05:09:59,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 11778 transitions. [2020-10-27 05:09:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:09:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:59,058 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] [2020-10-27 05:09:59,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:09:59,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:59,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1372590560, now seen corresponding path program 1 times [2020-10-27 05:09:59,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:59,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606483645] [2020-10-27 05:09:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:04,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:04,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:10:04,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 05:10:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:06,469 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:10:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:10:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:10:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:06,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606483645] [2020-10-27 05:10:06,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:06,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:10:06,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570426524] [2020-10-27 05:10:06,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:10:06,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:10:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:10:06,613 INFO L87 Difference]: Start difference. First operand 6896 states and 11778 transitions. Second operand 8 states. [2020-10-27 05:10:08,954 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:19,376 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:10:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:20,618 INFO L93 Difference]: Finished difference Result 10963 states and 18577 transitions. [2020-10-27 05:10:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:10:20,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-27 05:10:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:20,665 INFO L225 Difference]: With dead ends: 10963 [2020-10-27 05:10:20,666 INFO L226 Difference]: Without dead ends: 10206 [2020-10-27 05:10:20,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:10:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10206 states. [2020-10-27 05:10:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10206 to 6896. [2020-10-27 05:10:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-27 05:10:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 11774 transitions. [2020-10-27 05:10:21,203 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 11774 transitions. Word has length 215 [2020-10-27 05:10:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:21,203 INFO L481 AbstractCegarLoop]: Abstraction has 6896 states and 11774 transitions. [2020-10-27 05:10:21,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:10:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 11774 transitions. [2020-10-27 05:10:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:10:21,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:21,222 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] [2020-10-27 05:10:21,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:10:21,222 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1506178125, now seen corresponding path program 1 times [2020-10-27 05:10:21,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:21,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870075818] [2020-10-27 05:10:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:10:26,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:28,541 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:10:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:10:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:10:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:28,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870075818] [2020-10-27 05:10:28,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:28,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:10:28,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845912572] [2020-10-27 05:10:28,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:10:28,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:28,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:10:28,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:10:28,737 INFO L87 Difference]: Start difference. First operand 6896 states and 11774 transitions. Second operand 5 states. [2020-10-27 05:10:39,127 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:39,488 INFO L93 Difference]: Finished difference Result 20014 states and 34109 transitions. [2020-10-27 05:10:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:10:39,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:10:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:39,519 INFO L225 Difference]: With dead ends: 20014 [2020-10-27 05:10:39,519 INFO L226 Difference]: Without dead ends: 13423 [2020-10-27 05:10:39,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:10:39,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13423 states. [2020-10-27 05:10:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13423 to 13420. [2020-10-27 05:10:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13420 states. [2020-10-27 05:10:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13420 states to 13420 states and 22769 transitions. [2020-10-27 05:10:40,542 INFO L78 Accepts]: Start accepts. Automaton has 13420 states and 22769 transitions. Word has length 215 [2020-10-27 05:10:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:40,542 INFO L481 AbstractCegarLoop]: Abstraction has 13420 states and 22769 transitions. [2020-10-27 05:10:40,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:10:40,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13420 states and 22769 transitions. [2020-10-27 05:10:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:10:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:40,568 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] [2020-10-27 05:10:40,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:10:40,569 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1025545193, now seen corresponding path program 1 times [2020-10-27 05:10:40,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:40,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122371010] [2020-10-27 05:10:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:45,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:10:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:10:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:10:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:47,932 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:10:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:10:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:10:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:48,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122371010] [2020-10-27 05:10:48,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:48,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:10:48,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813265503] [2020-10-27 05:10:48,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:10:48,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:10:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:10:48,070 INFO L87 Difference]: Start difference. First operand 13420 states and 22769 transitions. Second operand 5 states. [2020-10-27 05:10:59,358 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:59,943 INFO L93 Difference]: Finished difference Result 39521 states and 67023 transitions. [2020-10-27 05:10:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:10:59,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:10:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:00,001 INFO L225 Difference]: With dead ends: 39521 [2020-10-27 05:11:00,002 INFO L226 Difference]: Without dead ends: 26590 [2020-10-27 05:11:00,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:11:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26590 states. [2020-10-27 05:11:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26590 to 26587. [2020-10-27 05:11:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26587 states. [2020-10-27 05:11:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26587 states to 26587 states and 44947 transitions. [2020-10-27 05:11:02,266 INFO L78 Accepts]: Start accepts. Automaton has 26587 states and 44947 transitions. Word has length 215 [2020-10-27 05:11:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:11:02,266 INFO L481 AbstractCegarLoop]: Abstraction has 26587 states and 44947 transitions. [2020-10-27 05:11:02,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:11:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 26587 states and 44947 transitions. [2020-10-27 05:11:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 05:11:02,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:11:02,304 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] [2020-10-27 05:11:02,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:11:02,304 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:11:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:11:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash 697233605, now seen corresponding path program 1 times [2020-10-27 05:11:02,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:11:02,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613801333] [2020-10-27 05:11:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:11:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:03,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:07,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:11:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 05:11:07,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:09,657 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:11:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:11:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:11:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:11:09,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613801333] [2020-10-27 05:11:09,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:11:09,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:11:09,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218751137] [2020-10-27 05:11:09,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:11:09,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:11:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:11:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:11:09,807 INFO L87 Difference]: Start difference. First operand 26587 states and 44947 transitions. Second operand 5 states. [2020-10-27 05:11:22,367 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:11:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:11:23,510 INFO L93 Difference]: Finished difference Result 77737 states and 131217 transitions. [2020-10-27 05:11:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:11:23,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-27 05:11:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:23,615 INFO L225 Difference]: With dead ends: 77737 [2020-10-27 05:11:23,615 INFO L226 Difference]: Without dead ends: 52022 [2020-10-27 05:11:23,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:11:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52022 states. [2020-10-27 05:11:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52022 to 52019. [2020-10-27 05:11:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52019 states. [2020-10-27 05:11:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52019 states to 52019 states and 87405 transitions. [2020-10-27 05:11:28,109 INFO L78 Accepts]: Start accepts. Automaton has 52019 states and 87405 transitions. Word has length 216 [2020-10-27 05:11:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:11:28,109 INFO L481 AbstractCegarLoop]: Abstraction has 52019 states and 87405 transitions. [2020-10-27 05:11:28,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:11:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 52019 states and 87405 transitions. [2020-10-27 05:11:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:11:28,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:11:28,293 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] [2020-10-27 05:11:28,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:11:28,294 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:11:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:11:28,294 INFO L82 PathProgramCache]: Analyzing trace with hash -897955366, now seen corresponding path program 1 times [2020-10-27 05:11:28,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:11:28,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779513331] [2020-10-27 05:11:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:11:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:29,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:33,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-27 05:11:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:35,644 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:11:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:11:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:35,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:11:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:11:35,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779513331] [2020-10-27 05:11:35,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:11:35,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:11:35,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395489127] [2020-10-27 05:11:35,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:11:35,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:11:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:11:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:11:35,788 INFO L87 Difference]: Start difference. First operand 52019 states and 87405 transitions. Second operand 8 states. [2020-10-27 05:11:38,105 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:11:51,656 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:11:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:11:55,930 INFO L93 Difference]: Finished difference Result 82505 states and 138149 transitions. [2020-10-27 05:11:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:11:55,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-27 05:11:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:56,036 INFO L225 Difference]: With dead ends: 82505 [2020-10-27 05:11:56,037 INFO L226 Difference]: Without dead ends: 76790 [2020-10-27 05:11:56,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:11:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76790 states. [2020-10-27 05:12:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76790 to 52019. [2020-10-27 05:12:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52019 states. [2020-10-27 05:12:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52019 states to 52019 states and 87373 transitions. [2020-10-27 05:12:00,784 INFO L78 Accepts]: Start accepts. Automaton has 52019 states and 87373 transitions. Word has length 217 [2020-10-27 05:12:00,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:12:00,784 INFO L481 AbstractCegarLoop]: Abstraction has 52019 states and 87373 transitions. [2020-10-27 05:12:00,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:12:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 52019 states and 87373 transitions. [2020-10-27 05:12:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:12:00,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:12:00,841 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] [2020-10-27 05:12:00,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:12:00,842 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:12:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:12:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1892709538, now seen corresponding path program 1 times [2020-10-27 05:12:00,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:12:00,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532372213] [2020-10-27 05:12:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:12:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:12:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:12:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-27 05:12:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:12:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0