/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:34:21,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:34:21,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:34:21,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:34:21,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:34:21,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:34:21,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:34:21,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:34:21,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:34:21,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:34:21,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:34:21,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:34:21,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:34:21,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:34:21,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:34:21,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:34:21,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:34:21,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:34:21,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:34:21,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:34:21,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:34:21,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:34:21,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:34:21,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:34:21,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:34:21,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:34:21,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:34:21,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:34:21,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:34:21,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:34:21,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:34:21,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:34:21,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:34:21,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:34:21,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:34:21,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:34:21,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:34:21,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:34:21,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:34:21,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:34:21,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:34:21,269 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 [2020-10-28 00:34:21,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:34:21,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:34:21,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:34:21,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:34:21,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:34:21,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:34:21,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:34:21,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:34:21,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:34:21,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:34:21,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:34:21,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:34:21,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:34:21,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:34:21,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:34:21,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:34:21,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:34:21,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:34:21,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:34:21,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:34:21,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:34:21,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:34:21,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:34:21,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:34:21,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:34:21,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:34:21,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:34:21,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:34:21,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:34:21,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:34:21,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:34:21,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:34:21,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:34:21,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:34:21,827 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:34:21,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:34:21,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd57f2e/ebfe3f60991740a19b894ecba73ac752/FLAGf3f1bbe39 [2020-10-28 00:34:22,743 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:34:22,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:34:22,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd57f2e/ebfe3f60991740a19b894ecba73ac752/FLAGf3f1bbe39 [2020-10-28 00:34:22,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0bd57f2e/ebfe3f60991740a19b894ecba73ac752 [2020-10-28 00:34:22,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:34:22,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:34:22,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:34:22,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:34:22,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:34:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:22" (1/1) ... [2020-10-28 00:34:22,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2830e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:22, skipping insertion in model container [2020-10-28 00:34:22,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:34:22" (1/1) ... [2020-10-28 00:34:22,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:34:23,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:34:24,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:34:24,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:34:25,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:34:25,369 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:34:25,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25 WrapperNode [2020-10-28 00:34:25,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:34:25,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:34:25,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:34:25,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:34:25,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (1/1) ... [2020-10-28 00:34:25,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:34:25,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:34:25,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:34:25,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:34:25,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (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 [2020-10-28 00:34:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:34:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:34:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:34:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:34:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:34:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:34:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:34:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:34:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:34:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:34:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:34:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:34:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:34:30,142 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:34:30,143 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:34:30,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:30 BoogieIcfgContainer [2020-10-28 00:34:30,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:34:30,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:34:30,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:34:30,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:34:30,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:34:22" (1/3) ... [2020-10-28 00:34:30,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554d98c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:30, skipping insertion in model container [2020-10-28 00:34:30,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:34:25" (2/3) ... [2020-10-28 00:34:30,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554d98c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:34:30, skipping insertion in model container [2020-10-28 00:34:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:34:30" (3/3) ... [2020-10-28 00:34:30,157 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:34:30,169 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:34:30,176 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:34:30,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:34:30,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:34:30,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:34:30,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:34:30,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:34:30,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:34:30,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:34:30,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:34:30,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:34:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states. [2020-10-28 00:34:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:30,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:30,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:30,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1028546938, now seen corresponding path program 1 times [2020-10-28 00:34:30,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:30,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009364647] [2020-10-28 00:34:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 00:34:36,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 00:34:36,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 00:34:36,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:34:37,614 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:34:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:37,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:37,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:37,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 00:34:37,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:37,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:37,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009364647] [2020-10-28 00:34:37,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:37,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:37,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744288552] [2020-10-28 00:34:37,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:37,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:37,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:37,966 INFO L87 Difference]: Start difference. First operand 1020 states. Second operand 4 states. [2020-10-28 00:34:39,089 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 00:34:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:48,193 INFO L93 Difference]: Finished difference Result 1778 states and 3166 transitions. [2020-10-28 00:34:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:48,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:34:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:48,236 INFO L225 Difference]: With dead ends: 1778 [2020-10-28 00:34:48,236 INFO L226 Difference]: Without dead ends: 1472 [2020-10-28 00:34:48,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-28 00:34:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1469. [2020-10-28 00:34:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-10-28 00:34:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2267 transitions. [2020-10-28 00:34:48,447 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2267 transitions. Word has length 325 [2020-10-28 00:34:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:48,449 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 2267 transitions. [2020-10-28 00:34:48,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2267 transitions. [2020-10-28 00:34:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:48,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:48,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:48,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:34:48,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1524659108, now seen corresponding path program 1 times [2020-10-28 00:34:48,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:48,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458871667] [2020-10-28 00:34:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:34:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 00:34:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:54,980 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:34:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:55,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 00:34:55,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:55,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:55,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:34:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:55,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458871667] [2020-10-28 00:34:55,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:55,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:55,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502565456] [2020-10-28 00:34:55,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:55,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:55,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:55,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:55,401 INFO L87 Difference]: Start difference. First operand 1469 states and 2267 transitions. Second operand 5 states. [2020-10-28 00:35:04,942 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:07,717 INFO L93 Difference]: Finished difference Result 4304 states and 6626 transitions. [2020-10-28 00:35:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:35:07,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-28 00:35:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:07,740 INFO L225 Difference]: With dead ends: 4304 [2020-10-28 00:35:07,740 INFO L226 Difference]: Without dead ends: 2870 [2020-10-28 00:35:07,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:35:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2020-10-28 00:35:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2787. [2020-10-28 00:35:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-10-28 00:35:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4285 transitions. [2020-10-28 00:35:07,901 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4285 transitions. Word has length 325 [2020-10-28 00:35:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:07,902 INFO L481 AbstractCegarLoop]: Abstraction has 2787 states and 4285 transitions. [2020-10-28 00:35:07,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4285 transitions. [2020-10-28 00:35:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:35:07,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:07,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:07,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:35:07,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:07,913 INFO L82 PathProgramCache]: Analyzing trace with hash -516690639, now seen corresponding path program 1 times [2020-10-28 00:35:07,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:07,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426595568] [2020-10-28 00:35:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:08,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:35:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:35:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 00:35:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 00:35:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 00:35:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:35:14,015 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:35:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:35:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:14,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426595568] [2020-10-28 00:35:14,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:14,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:14,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705057658] [2020-10-28 00:35:14,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:14,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:14,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:14,304 INFO L87 Difference]: Start difference. First operand 2787 states and 4285 transitions. Second operand 4 states. [2020-10-28 00:35:24,811 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:35:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:27,270 INFO L93 Difference]: Finished difference Result 8077 states and 12363 transitions. [2020-10-28 00:35:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:27,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-28 00:35:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:27,299 INFO L225 Difference]: With dead ends: 8077 [2020-10-28 00:35:27,299 INFO L226 Difference]: Without dead ends: 5431 [2020-10-28 00:35:27,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5431 states. [2020-10-28 00:35:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5431 to 5341. [2020-10-28 00:35:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5341 states. [2020-10-28 00:35:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 8163 transitions. [2020-10-28 00:35:27,522 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 8163 transitions. Word has length 327 [2020-10-28 00:35:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:27,522 INFO L481 AbstractCegarLoop]: Abstraction has 5341 states and 8163 transitions. [2020-10-28 00:35:27,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 8163 transitions. [2020-10-28 00:35:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:35:27,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:27,537 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] [2020-10-28 00:35:27,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:35:27,537 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 64477324, now seen corresponding path program 1 times [2020-10-28 00:35:27,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:27,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618898248] [2020-10-28 00:35:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:27,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:32,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:35:32,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:35:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 00:35:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:35:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:35:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:33,656 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:35:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:33,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:33,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:33,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618898248] [2020-10-28 00:35:33,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:33,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:33,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348273976] [2020-10-28 00:35:33,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:33,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:33,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:33,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:33,877 INFO L87 Difference]: Start difference. First operand 5341 states and 8163 transitions. Second operand 4 states. [2020-10-28 00:35:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:40,645 INFO L93 Difference]: Finished difference Result 15661 states and 23844 transitions. [2020-10-28 00:35:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:35:40,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-28 00:35:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:40,697 INFO L225 Difference]: With dead ends: 15661 [2020-10-28 00:35:40,697 INFO L226 Difference]: Without dead ends: 10499 [2020-10-28 00:35:40,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10499 states. [2020-10-28 00:35:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10499 to 5364. [2020-10-28 00:35:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5364 states. [2020-10-28 00:35:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 8195 transitions. [2020-10-28 00:35:40,998 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 8195 transitions. Word has length 327 [2020-10-28 00:35:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:40,999 INFO L481 AbstractCegarLoop]: Abstraction has 5364 states and 8195 transitions. [2020-10-28 00:35:40,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 8195 transitions. [2020-10-28 00:35:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 00:35:41,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:41,016 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] [2020-10-28 00:35:41,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:35:41,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -525688319, now seen corresponding path program 1 times [2020-10-28 00:35:41,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:41,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021644501] [2020-10-28 00:35:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:44,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:46,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 00:35:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:35:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-28 00:35:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 00:35:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:35:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:47,219 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:35:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:47,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:35:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:47,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021644501] [2020-10-28 00:35:47,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:47,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:47,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557944979] [2020-10-28 00:35:47,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:47,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:47,384 INFO L87 Difference]: Start difference. First operand 5364 states and 8195 transitions. Second operand 5 states. [2020-10-28 00:35:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:59,346 INFO L93 Difference]: Finished difference Result 15358 states and 23298 transitions. [2020-10-28 00:35:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:59,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-28 00:35:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:59,390 INFO L225 Difference]: With dead ends: 15358 [2020-10-28 00:35:59,390 INFO L226 Difference]: Without dead ends: 10462 [2020-10-28 00:35:59,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:35:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10462 states. [2020-10-28 00:35:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10462 to 5604. [2020-10-28 00:35:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5604 states. [2020-10-28 00:35:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 8615 transitions. [2020-10-28 00:35:59,739 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 8615 transitions. Word has length 328 [2020-10-28 00:35:59,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:59,739 INFO L481 AbstractCegarLoop]: Abstraction has 5604 states and 8615 transitions. [2020-10-28 00:35:59,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 8615 transitions. [2020-10-28 00:35:59,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 00:35:59,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:59,755 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] [2020-10-28 00:35:59,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:35:59,755 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:59,756 INFO L82 PathProgramCache]: Analyzing trace with hash 326140158, now seen corresponding path program 1 times [2020-10-28 00:35:59,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:59,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360347448] [2020-10-28 00:35:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:04,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 00:36:04,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:36:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 00:36:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 00:36:04,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:05,827 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:36:05,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:05,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:05,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:05,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:05,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:36:05,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:05,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:05,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:05,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:05,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:05,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360347448] [2020-10-28 00:36:05,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:05,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:05,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393545779] [2020-10-28 00:36:05,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:05,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:05,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:05,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:05,952 INFO L87 Difference]: Start difference. First operand 5604 states and 8615 transitions. Second operand 4 states. [2020-10-28 00:36:16,402 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:36:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:19,222 INFO L93 Difference]: Finished difference Result 16229 states and 24836 transitions. [2020-10-28 00:36:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:19,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-28 00:36:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:19,255 INFO L225 Difference]: With dead ends: 16229 [2020-10-28 00:36:19,255 INFO L226 Difference]: Without dead ends: 10897 [2020-10-28 00:36:19,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2020-10-28 00:36:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 10811. [2020-10-28 00:36:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10811 states. [2020-10-28 00:36:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10811 states to 10811 states and 16500 transitions. [2020-10-28 00:36:19,849 INFO L78 Accepts]: Start accepts. Automaton has 10811 states and 16500 transitions. Word has length 328 [2020-10-28 00:36:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:19,850 INFO L481 AbstractCegarLoop]: Abstraction has 10811 states and 16500 transitions. [2020-10-28 00:36:19,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10811 states and 16500 transitions. [2020-10-28 00:36:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 00:36:19,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:19,874 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] [2020-10-28 00:36:19,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:36:19,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:19,875 INFO L82 PathProgramCache]: Analyzing trace with hash -68481971, now seen corresponding path program 1 times [2020-10-28 00:36:19,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:19,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806643615] [2020-10-28 00:36:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:36:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:25,883 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:36:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:25,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:25,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806643615] [2020-10-28 00:36:25,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:25,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:25,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861826435] [2020-10-28 00:36:25,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:25,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:25,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:25,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:25,974 INFO L87 Difference]: Start difference. First operand 10811 states and 16500 transitions. Second operand 4 states. [2020-10-28 00:36:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:33,091 INFO L93 Difference]: Finished difference Result 29877 states and 44982 transitions. [2020-10-28 00:36:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:36:33,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-28 00:36:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:33,137 INFO L225 Difference]: With dead ends: 29877 [2020-10-28 00:36:33,137 INFO L226 Difference]: Without dead ends: 20339 [2020-10-28 00:36:33,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20339 states. [2020-10-28 00:36:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20339 to 10913. [2020-10-28 00:36:33,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10913 states. [2020-10-28 00:36:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10913 states to 10913 states and 16635 transitions. [2020-10-28 00:36:34,006 INFO L78 Accepts]: Start accepts. Automaton has 10913 states and 16635 transitions. Word has length 330 [2020-10-28 00:36:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:34,007 INFO L481 AbstractCegarLoop]: Abstraction has 10913 states and 16635 transitions. [2020-10-28 00:36:34,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10913 states and 16635 transitions. [2020-10-28 00:36:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 00:36:34,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:34,029 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] [2020-10-28 00:36:34,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:36:34,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1341998221, now seen corresponding path program 1 times [2020-10-28 00:36:34,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:34,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885727153] [2020-10-28 00:36:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:36:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:40,098 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:36:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:40,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:40,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:40,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885727153] [2020-10-28 00:36:40,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:40,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:40,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724714240] [2020-10-28 00:36:40,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:40,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:40,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:40,257 INFO L87 Difference]: Start difference. First operand 10913 states and 16635 transitions. Second operand 4 states. [2020-10-28 00:36:49,485 WARN L193 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:36:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:50,429 INFO L93 Difference]: Finished difference Result 23756 states and 36342 transitions. [2020-10-28 00:36:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:50,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-10-28 00:36:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:50,459 INFO L225 Difference]: With dead ends: 23756 [2020-10-28 00:36:50,460 INFO L226 Difference]: Without dead ends: 15244 [2020-10-28 00:36:50,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15244 states. [2020-10-28 00:36:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15244 to 12961. [2020-10-28 00:36:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12961 states. [2020-10-28 00:36:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12961 states to 12961 states and 19991 transitions. [2020-10-28 00:36:51,203 INFO L78 Accepts]: Start accepts. Automaton has 12961 states and 19991 transitions. Word has length 331 [2020-10-28 00:36:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:51,203 INFO L481 AbstractCegarLoop]: Abstraction has 12961 states and 19991 transitions. [2020-10-28 00:36:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 12961 states and 19991 transitions. [2020-10-28 00:36:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 00:36:51,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:51,227 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] [2020-10-28 00:36:51,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:36:51,227 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:51,228 INFO L82 PathProgramCache]: Analyzing trace with hash 315316216, now seen corresponding path program 1 times [2020-10-28 00:36:51,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:51,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341548762] [2020-10-28 00:36:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:56,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 00:36:56,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:36:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:36:56,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 00:36:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:36:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:57,316 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:36:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:57,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:57,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:36:57,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:57,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341548762] [2020-10-28 00:36:57,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:57,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:57,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165994493] [2020-10-28 00:36:57,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:57,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:57,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:57,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:57,493 INFO L87 Difference]: Start difference. First operand 12961 states and 19991 transitions. Second operand 5 states. [2020-10-28 00:37:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:04,310 INFO L93 Difference]: Finished difference Result 23093 states and 35355 transitions. [2020-10-28 00:37:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:04,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-28 00:37:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:04,333 INFO L225 Difference]: With dead ends: 23093 [2020-10-28 00:37:04,333 INFO L226 Difference]: Without dead ends: 11621 [2020-10-28 00:37:04,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:37:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11621 states. [2020-10-28 00:37:04,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11621 to 11563. [2020-10-28 00:37:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11563 states. [2020-10-28 00:37:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11563 states to 11563 states and 17844 transitions. [2020-10-28 00:37:04,908 INFO L78 Accepts]: Start accepts. Automaton has 11563 states and 17844 transitions. Word has length 331 [2020-10-28 00:37:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:04,909 INFO L481 AbstractCegarLoop]: Abstraction has 11563 states and 17844 transitions. [2020-10-28 00:37:04,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11563 states and 17844 transitions. [2020-10-28 00:37:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-28 00:37:04,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:04,926 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] [2020-10-28 00:37:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:37:04,926 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1234733125, now seen corresponding path program 1 times [2020-10-28 00:37:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:04,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108342310] [2020-10-28 00:37:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 00:37:10,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:37:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 00:37:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:37:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 00:37:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 00:37:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:11,175 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:11,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:11,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:11,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:37:11,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:11,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108342310] [2020-10-28 00:37:11,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:11,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:37:11,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745016991] [2020-10-28 00:37:11,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:37:11,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:11,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:37:11,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:37:11,289 INFO L87 Difference]: Start difference. First operand 11563 states and 17844 transitions. Second operand 10 states. [2020-10-28 00:37:12,442 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 356 [2020-10-28 00:37:25,892 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 359 DAG size of output: 356 [2020-10-28 00:37:26,924 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2020-10-28 00:37:29,006 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 358 DAG size of output: 356 [2020-10-28 00:37:33,782 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 357 DAG size of output: 355 [2020-10-28 00:37:34,806 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification that was a NOOP. DAG size: 354 [2020-10-28 00:37:36,780 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 356 DAG size of output: 355 [2020-10-28 00:37:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:38,035 INFO L93 Difference]: Finished difference Result 50588 states and 78939 transitions. [2020-10-28 00:37:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 00:37:38,036 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-10-28 00:37:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:38,101 INFO L225 Difference]: With dead ends: 50588 [2020-10-28 00:37:38,101 INFO L226 Difference]: Without dead ends: 44932 [2020-10-28 00:37:38,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 00:37:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44932 states. [2020-10-28 00:37:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44932 to 30949. [2020-10-28 00:37:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30949 states. [2020-10-28 00:37:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30949 states to 30949 states and 48156 transitions. [2020-10-28 00:37:40,070 INFO L78 Accepts]: Start accepts. Automaton has 30949 states and 48156 transitions. Word has length 333 [2020-10-28 00:37:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:40,070 INFO L481 AbstractCegarLoop]: Abstraction has 30949 states and 48156 transitions. [2020-10-28 00:37:40,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:37:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 30949 states and 48156 transitions. [2020-10-28 00:37:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-28 00:37:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:40,093 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] [2020-10-28 00:37:40,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:37:40,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:40,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1648382635, now seen corresponding path program 1 times [2020-10-28 00:37:40,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:40,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491511157] [2020-10-28 00:37:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:40,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 00:37:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 00:37:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:46,112 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:46,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:46,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:37:46,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:46,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:46,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491511157] [2020-10-28 00:37:46,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:46,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:46,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536301689] [2020-10-28 00:37:46,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:46,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:46,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:46,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:46,249 INFO L87 Difference]: Start difference. First operand 30949 states and 48156 transitions. Second operand 4 states.