/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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:07:30,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:07:30,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:07:30,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:07:30,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:07:30,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:07:30,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:07:30,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:07:30,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:07:30,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:07:30,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:07:30,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:07:30,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:07:30,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:07:30,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:07:30,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:07:30,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:07:30,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:07:30,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:07:30,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:07:30,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:07:30,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:07:30,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:07:30,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:07:30,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:07:30,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:07:30,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:07:30,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:07:30,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:07:30,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:07:30,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:07:30,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:07:30,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:07:30,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:07:30,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:07:30,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:07:30,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:07:30,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:07:30,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:07:30,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:07:30,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:07:30,644 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 06:07:30,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:07:30,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:07:30,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:07:30,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:07:30,706 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:07:30,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:07:30,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:07:30,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:07:30,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:07:30,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:07:30,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:07:30,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:07:30,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:07:30,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:07:30,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:07:30,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:07:30,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:07:30,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:07:30,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:07:30,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:07:30,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:07:30,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:07:30,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:07:30,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:07:30,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:07:30,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:07:30,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:07:30,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:07:30,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:07:30,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:07:31,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:07:31,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:07:31,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:07:31,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:07:31,165 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:07:31,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:07:31,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a834e75/cd4e297d643741d7b709632062b6e0b8/FLAG8158cd0f9 [2020-10-27 06:07:32,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:07:32,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:07:32,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a834e75/cd4e297d643741d7b709632062b6e0b8/FLAG8158cd0f9 [2020-10-27 06:07:32,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90a834e75/cd4e297d643741d7b709632062b6e0b8 [2020-10-27 06:07:32,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:07:32,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:07:32,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:32,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:07:32,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:07:32,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:32" (1/1) ... [2020-10-27 06:07:32,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44153613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:32, skipping insertion in model container [2020-10-27 06:07:32,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:32" (1/1) ... [2020-10-27 06:07:32,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:07:32,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:07:33,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:33,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:07:34,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:34,033 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:07:34,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34 WrapperNode [2020-10-27 06:07:34,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:34,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:07:34,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:07:34,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:07:34,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (1/1) ... [2020-10-27 06:07:34,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:07:34,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:07:34,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:07:34,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:07:34,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (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 06:07:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:07:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:07:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:07:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:07:34,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:07:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:07:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:07:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:07:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:07:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:07:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:07:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:07:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:07:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:07:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:07:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:07:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:07:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:07:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:07:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:07:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:07:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:07:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:07:37,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:07:37,142 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:07:37,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:37 BoogieIcfgContainer [2020-10-27 06:07:37,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:07:37,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:07:37,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:07:37,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:07:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:07:32" (1/3) ... [2020-10-27 06:07:37,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277025f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:37, skipping insertion in model container [2020-10-27 06:07:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:34" (2/3) ... [2020-10-27 06:07:37,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277025f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:37, skipping insertion in model container [2020-10-27 06:07:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:37" (3/3) ... [2020-10-27 06:07:37,154 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:07:37,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:07:37,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:07:37,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:07:37,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:07:37,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:07:37,222 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:07:37,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:07:37,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:07:37,223 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:07:37,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:07:37,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:07:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2020-10-27 06:07:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:07:37,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:37,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:37,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash 253401268, now seen corresponding path program 1 times [2020-10-27 06:07:37,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:37,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760898260] [2020-10-27 06:07:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:42,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:07:42,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:07:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 06:07:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 06:07:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:07:43,892 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:07:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:07:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:07:44,231 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 06:07:44,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760898260] [2020-10-27 06:07:44,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:44,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:44,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758883205] [2020-10-27 06:07:44,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:44,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:44,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:44,274 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 5 states. [2020-10-27 06:07:51,243 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:07:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:53,225 INFO L93 Difference]: Finished difference Result 2299 states and 4087 transitions. [2020-10-27 06:07:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:07:53,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:07:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:53,265 INFO L225 Difference]: With dead ends: 2299 [2020-10-27 06:07:53,266 INFO L226 Difference]: Without dead ends: 1525 [2020-10-27 06:07:53,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2020-10-27 06:07:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1522. [2020-10-27 06:07:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-27 06:07:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2355 transitions. [2020-10-27 06:07:53,501 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2355 transitions. Word has length 327 [2020-10-27 06:07:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:53,504 INFO L481 AbstractCegarLoop]: Abstraction has 1522 states and 2355 transitions. [2020-10-27 06:07:53,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2355 transitions. [2020-10-27 06:07:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:07:53,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:53,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:53,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:07:53,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:53,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1222647316, now seen corresponding path program 1 times [2020-10-27 06:07:53,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:53,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018033152] [2020-10-27 06:07:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:58,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:58,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:07:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:07:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:59,466 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:07:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:59,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:59,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:59,766 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 06:07:59,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018033152] [2020-10-27 06:07:59,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:59,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:59,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473859293] [2020-10-27 06:07:59,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:59,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:59,783 INFO L87 Difference]: Start difference. First operand 1522 states and 2355 transitions. Second operand 5 states. [2020-10-27 06:08:05,916 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:07,819 INFO L93 Difference]: Finished difference Result 4412 states and 6801 transitions. [2020-10-27 06:08:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:07,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:08:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:07,837 INFO L225 Difference]: With dead ends: 4412 [2020-10-27 06:08:07,838 INFO L226 Difference]: Without dead ends: 2955 [2020-10-27 06:08:07,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-10-27 06:08:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2952. [2020-10-27 06:08:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2020-10-27 06:08:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 4528 transitions. [2020-10-27 06:08:08,039 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 4528 transitions. Word has length 329 [2020-10-27 06:08:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:08,040 INFO L481 AbstractCegarLoop]: Abstraction has 2952 states and 4528 transitions. [2020-10-27 06:08:08,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 4528 transitions. [2020-10-27 06:08:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:08:08,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:08,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:08,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:08:08,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash -734442832, now seen corresponding path program 1 times [2020-10-27 06:08:08,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:08,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974450161] [2020-10-27 06:08:08,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:08:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:08:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 06:08:13,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 06:08:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:13,825 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:08:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:13,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:13,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:13,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:13,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:08:13,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:13,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:13,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:14,270 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 06:08:14,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974450161] [2020-10-27 06:08:14,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:14,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:14,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879849744] [2020-10-27 06:08:14,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:14,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:14,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:14,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:14,274 INFO L87 Difference]: Start difference. First operand 2952 states and 4528 transitions. Second operand 5 states. [2020-10-27 06:08:19,967 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:21,895 INFO L93 Difference]: Finished difference Result 8551 states and 13064 transitions. [2020-10-27 06:08:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:21,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:08:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:21,925 INFO L225 Difference]: With dead ends: 8551 [2020-10-27 06:08:21,925 INFO L226 Difference]: Without dead ends: 5711 [2020-10-27 06:08:21,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2020-10-27 06:08:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5708. [2020-10-27 06:08:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5708 states. [2020-10-27 06:08:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 8671 transitions. [2020-10-27 06:08:22,259 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 8671 transitions. Word has length 331 [2020-10-27 06:08:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:22,260 INFO L481 AbstractCegarLoop]: Abstraction has 5708 states and 8671 transitions. [2020-10-27 06:08:22,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 8671 transitions. [2020-10-27 06:08:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:08:22,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:22,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:22,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:08:22,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash -772062674, now seen corresponding path program 1 times [2020-10-27 06:08:22,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:22,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042291013] [2020-10-27 06:08:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:08:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 06:08:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:28,054 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:08:28,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:08:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:28,390 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 06:08:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042291013] [2020-10-27 06:08:28,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:28,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:28,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602236829] [2020-10-27 06:08:28,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:28,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:28,393 INFO L87 Difference]: Start difference. First operand 5708 states and 8671 transitions. Second operand 5 states. [2020-10-27 06:08:35,244 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:37,367 INFO L93 Difference]: Finished difference Result 16722 states and 25345 transitions. [2020-10-27 06:08:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:37,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-27 06:08:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:37,424 INFO L225 Difference]: With dead ends: 16722 [2020-10-27 06:08:37,424 INFO L226 Difference]: Without dead ends: 11233 [2020-10-27 06:08:37,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11233 states. [2020-10-27 06:08:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11233 to 11230. [2020-10-27 06:08:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11230 states. [2020-10-27 06:08:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 16951 transitions. [2020-10-27 06:08:38,177 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 16951 transitions. Word has length 333 [2020-10-27 06:08:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:38,177 INFO L481 AbstractCegarLoop]: Abstraction has 11230 states and 16951 transitions. [2020-10-27 06:08:38,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 16951 transitions. [2020-10-27 06:08:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 06:08:38,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:38,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:38,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:08:38,206 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:38,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:38,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2142657318, now seen corresponding path program 1 times [2020-10-27 06:08:38,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:38,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273761826] [2020-10-27 06:08:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:43,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-27 06:08:43,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 06:08:43,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:43,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:08:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:44,061 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:08:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:44,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:44,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:08:44,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:44,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:44,280 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 06:08:44,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273761826] [2020-10-27 06:08:44,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:44,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:44,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339983151] [2020-10-27 06:08:44,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:44,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:44,282 INFO L87 Difference]: Start difference. First operand 11230 states and 16951 transitions. Second operand 5 states. [2020-10-27 06:08:51,363 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:53,634 INFO L93 Difference]: Finished difference Result 32567 states and 48974 transitions. [2020-10-27 06:08:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:53,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-27 06:08:53,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:53,697 INFO L225 Difference]: With dead ends: 32567 [2020-10-27 06:08:53,697 INFO L226 Difference]: Without dead ends: 21980 [2020-10-27 06:08:53,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21980 states. [2020-10-27 06:08:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21980 to 21977. [2020-10-27 06:08:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21977 states. [2020-10-27 06:08:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21977 states to 21977 states and 32930 transitions. [2020-10-27 06:08:55,201 INFO L78 Accepts]: Start accepts. Automaton has 21977 states and 32930 transitions. Word has length 335 [2020-10-27 06:08:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:55,201 INFO L481 AbstractCegarLoop]: Abstraction has 21977 states and 32930 transitions. [2020-10-27 06:08:55,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21977 states and 32930 transitions. [2020-10-27 06:08:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-27 06:08:55,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:55,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:55,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:08:55,249 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1941146086, now seen corresponding path program 1 times [2020-10-27 06:08:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:55,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315144334] [2020-10-27 06:08:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 06:09:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:01,042 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:09:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:01,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:01,219 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 06:09:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315144334] [2020-10-27 06:09:01,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:01,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678540079] [2020-10-27 06:09:01,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:01,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:01,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:01,222 INFO L87 Difference]: Start difference. First operand 21977 states and 32930 transitions. Second operand 5 states. [2020-10-27 06:09:09,686 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:09:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:12,631 INFO L93 Difference]: Finished difference Result 65047 states and 97306 transitions. [2020-10-27 06:09:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:12,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-27 06:09:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:12,721 INFO L225 Difference]: With dead ends: 65047 [2020-10-27 06:09:12,722 INFO L226 Difference]: Without dead ends: 43314 [2020-10-27 06:09:12,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43314 states. [2020-10-27 06:09:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43314 to 43311. [2020-10-27 06:09:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43311 states. [2020-10-27 06:09:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43311 states to 43311 states and 64464 transitions. [2020-10-27 06:09:15,501 INFO L78 Accepts]: Start accepts. Automaton has 43311 states and 64464 transitions. Word has length 337 [2020-10-27 06:09:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:15,501 INFO L481 AbstractCegarLoop]: Abstraction has 43311 states and 64464 transitions. [2020-10-27 06:09:15,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 43311 states and 64464 transitions. [2020-10-27 06:09:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-27 06:09:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:15,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:15,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:09:15,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash -158843097, now seen corresponding path program 1 times [2020-10-27 06:09:15,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:15,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357843527] [2020-10-27 06:09:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:16,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:20,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:20,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-27 06:09:20,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:09:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:09:20,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 06:09:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:21,277 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:09:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:21,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357843527] [2020-10-27 06:09:21,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:21,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:21,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549119935] [2020-10-27 06:09:21,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:21,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:21,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:21,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:21,436 INFO L87 Difference]: Start difference. First operand 43311 states and 64464 transitions. Second operand 5 states. [2020-10-27 06:09:31,550 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:09:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:35,162 INFO L93 Difference]: Finished difference Result 127593 states and 189569 transitions. [2020-10-27 06:09:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:35,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-27 06:09:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:35,328 INFO L225 Difference]: With dead ends: 127593 [2020-10-27 06:09:35,329 INFO L226 Difference]: Without dead ends: 84722 [2020-10-27 06:09:35,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84722 states. [2020-10-27 06:09:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84722 to 84719. [2020-10-27 06:09:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84719 states. [2020-10-27 06:09:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84719 states to 84719 states and 125015 transitions. [2020-10-27 06:09:41,279 INFO L78 Accepts]: Start accepts. Automaton has 84719 states and 125015 transitions. Word has length 339 [2020-10-27 06:09:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:41,279 INFO L481 AbstractCegarLoop]: Abstraction has 84719 states and 125015 transitions. [2020-10-27 06:09:41,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 84719 states and 125015 transitions. [2020-10-27 06:09:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 06:09:41,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:41,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:41,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:09:41,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1737497540, now seen corresponding path program 1 times [2020-10-27 06:09:41,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:41,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327053666] [2020-10-27 06:09:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:42,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:42,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 06:09:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:47,107 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:09:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:47,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:47,315 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 06:09:47,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327053666] [2020-10-27 06:09:47,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:47,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:47,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142870627] [2020-10-27 06:09:47,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:47,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:47,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:47,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:47,318 INFO L87 Difference]: Start difference. First operand 84719 states and 125015 transitions. Second operand 5 states. [2020-10-27 06:10:01,125 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:10:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:05,740 INFO L93 Difference]: Finished difference Result 246617 states and 362793 transitions. [2020-10-27 06:10:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:05,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-27 06:10:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:06,047 INFO L225 Difference]: With dead ends: 246617 [2020-10-27 06:10:06,047 INFO L226 Difference]: Without dead ends: 164326 [2020-10-27 06:10:06,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164326 states. [2020-10-27 06:10:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164326 to 164323. [2020-10-27 06:10:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164323 states. [2020-10-27 06:10:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164323 states to 164323 states and 239893 transitions. [2020-10-27 06:10:17,918 INFO L78 Accepts]: Start accepts. Automaton has 164323 states and 239893 transitions. Word has length 341 [2020-10-27 06:10:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:17,919 INFO L481 AbstractCegarLoop]: Abstraction has 164323 states and 239893 transitions. [2020-10-27 06:10:17,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 164323 states and 239893 transitions. [2020-10-27 06:10:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-27 06:10:18,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:18,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:18,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:10:18,387 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1797087267, now seen corresponding path program 1 times [2020-10-27 06:10:18,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:18,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269939697] [2020-10-27 06:10:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 06:10:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:24,095 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:10:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:24,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:24,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:24,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:24,277 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 06:10:24,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269939697] [2020-10-27 06:10:24,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:24,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:24,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740933787] [2020-10-27 06:10:24,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:24,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:24,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:24,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:24,281 INFO L87 Difference]: Start difference. First operand 164323 states and 239893 transitions. Second operand 5 states. [2020-10-27 06:10:45,363 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:10:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:52,961 INFO L93 Difference]: Finished difference Result 479635 states and 698281 transitions. [2020-10-27 06:10:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:52,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2020-10-27 06:10:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:53,704 INFO L225 Difference]: With dead ends: 479635 [2020-10-27 06:10:53,704 INFO L226 Difference]: Without dead ends: 319400 [2020-10-27 06:10:53,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319400 states.