/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:04:08,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:04:08,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:04:08,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:04:08,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:04:08,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:04:08,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:04:08,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:04:08,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:04:08,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:04:08,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:04:08,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:04:08,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:04:08,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:04:08,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:04:08,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:04:08,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:04:08,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:04:08,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:04:08,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:04:08,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:04:08,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:04:08,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:04:08,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:04:08,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:04:08,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:04:08,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:04:08,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:04:08,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:04:08,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:04:08,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:04:08,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:04:08,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:04:08,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:04:08,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:04:08,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:04:08,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:04:08,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:04:08,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:04:08,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:04:08,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:04:08,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:04:08,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:04:08,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:04:08,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:04:08,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:04:08,667 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:04:08,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:04:08,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:04:08,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:04:08,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:04:08,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:04:08,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:04:08,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:04:08,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:04:08,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:04:08,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:04:08,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:04:08,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:04:08,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:04:08,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:04:08,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:04:08,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:04:08,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:04:08,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:04:08,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:04:08,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:04:08,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:04:08,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:04:08,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:04:08,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:04:08,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:04:09,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:04:09,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:04:09,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:04:09,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:04:09,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:04:09,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:04:09,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb4f7eae/1db5bcf0c6774c86b32abb3eeda178d1/FLAGda209de69 [2020-10-29 14:04:09,925 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:04:09,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:04:09,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb4f7eae/1db5bcf0c6774c86b32abb3eeda178d1/FLAGda209de69 [2020-10-29 14:04:10,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fb4f7eae/1db5bcf0c6774c86b32abb3eeda178d1 [2020-10-29 14:04:10,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:04:10,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:04:10,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:04:10,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:04:10,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:04:10,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:10,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10, skipping insertion in model container [2020-10-29 14:04:10,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:10,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:04:10,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:04:10,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:04:10,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:04:10,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:04:10,972 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:04:10,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10 WrapperNode [2020-10-29 14:04:10,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:04:10,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:04:10,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:04:10,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:04:10,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:10,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... [2020-10-29 14:04:11,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:04:11,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:04:11,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:04:11,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:04:11,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:04:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:04:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:04:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:04:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:04:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:04:12,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:04:12,702 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:04:12,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:04:12 BoogieIcfgContainer [2020-10-29 14:04:12,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:04:12,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:04:12,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:04:12,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:04:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:04:10" (1/3) ... [2020-10-29 14:04:12,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e92f1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:04:12, skipping insertion in model container [2020-10-29 14:04:12,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:04:10" (2/3) ... [2020-10-29 14:04:12,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e92f1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:04:12, skipping insertion in model container [2020-10-29 14:04:12,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:04:12" (3/3) ... [2020-10-29 14:04:12,717 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:04:12,731 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:04:12,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:04:12,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:04:12,790 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:04:12,790 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:04:12,790 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:04:12,790 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:04:12,790 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:04:12,791 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:04:12,791 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:04:12,791 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:04:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2020-10-29 14:04:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:04:12,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:12,889 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] [2020-10-29 14:04:12,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:12,904 INFO L82 PathProgramCache]: Analyzing trace with hash -566979542, now seen corresponding path program 1 times [2020-10-29 14:04:12,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:12,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159659543] [2020-10-29 14:04:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:18,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 14:04:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:04:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 14:04:18,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:18,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 14:04:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 14:04:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:04:19,222 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:04:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:04:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:19,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159659543] [2020-10-29 14:04:19,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:19,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:04:19,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120865826] [2020-10-29 14:04:19,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:04:19,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:19,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:04:19,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:04:19,412 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2020-10-29 14:04:20,083 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:04:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:22,661 INFO L93 Difference]: Finished difference Result 643 states and 1110 transitions. [2020-10-29 14:04:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:22,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 14:04:22,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:22,703 INFO L225 Difference]: With dead ends: 643 [2020-10-29 14:04:22,703 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 14:04:22,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 14:04:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2020-10-29 14:04:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-29 14:04:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 792 transitions. [2020-10-29 14:04:22,839 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 792 transitions. Word has length 123 [2020-10-29 14:04:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:22,840 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 792 transitions. [2020-10-29 14:04:22,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:04:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 792 transitions. [2020-10-29 14:04:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 14:04:22,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:22,857 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] [2020-10-29 14:04:22,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:04:22,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:22,859 INFO L82 PathProgramCache]: Analyzing trace with hash 197511942, now seen corresponding path program 1 times [2020-10-29 14:04:22,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:22,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613883140] [2020-10-29 14:04:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:27,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:27,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 14:04:27,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 14:04:27,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:27,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:04:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 14:04:28,624 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:28,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:28,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:28,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:28,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:28,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:04:28,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:28,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:28,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:28,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613883140] [2020-10-29 14:04:28,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:28,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:28,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935521006] [2020-10-29 14:04:28,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:28,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:28,787 INFO L87 Difference]: Start difference. First operand 478 states and 792 transitions. Second operand 5 states. [2020-10-29 14:04:31,875 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:32,032 INFO L93 Difference]: Finished difference Result 1326 states and 2188 transitions. [2020-10-29 14:04:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:32,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 14:04:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:32,043 INFO L225 Difference]: With dead ends: 1326 [2020-10-29 14:04:32,043 INFO L226 Difference]: Without dead ends: 913 [2020-10-29 14:04:32,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-29 14:04:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 910. [2020-10-29 14:04:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-29 14:04:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1502 transitions. [2020-10-29 14:04:32,154 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1502 transitions. Word has length 126 [2020-10-29 14:04:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:32,156 INFO L481 AbstractCegarLoop]: Abstraction has 910 states and 1502 transitions. [2020-10-29 14:04:32,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1502 transitions. [2020-10-29 14:04:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:04:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:32,167 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] [2020-10-29 14:04:32,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:04:32,168 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1667779077, now seen corresponding path program 1 times [2020-10-29 14:04:32,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:32,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148005032] [2020-10-29 14:04:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:36,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:04:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 14:04:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:37,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:04:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:04:37,924 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:37,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:37,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:04:37,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:37,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:38,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148005032] [2020-10-29 14:04:38,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:38,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:38,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749456308] [2020-10-29 14:04:38,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:38,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:38,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:38,031 INFO L87 Difference]: Start difference. First operand 910 states and 1502 transitions. Second operand 5 states. [2020-10-29 14:04:41,074 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:41,219 INFO L93 Difference]: Finished difference Result 2619 states and 4313 transitions. [2020-10-29 14:04:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:41,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:04:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:41,233 INFO L225 Difference]: With dead ends: 2619 [2020-10-29 14:04:41,233 INFO L226 Difference]: Without dead ends: 1762 [2020-10-29 14:04:41,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:41,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-10-29 14:04:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1759. [2020-10-29 14:04:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1759 states. [2020-10-29 14:04:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2882 transitions. [2020-10-29 14:04:41,386 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2882 transitions. Word has length 127 [2020-10-29 14:04:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:41,387 INFO L481 AbstractCegarLoop]: Abstraction has 1759 states and 2882 transitions. [2020-10-29 14:04:41,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2882 transitions. [2020-10-29 14:04:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:04:41,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:41,392 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] [2020-10-29 14:04:41,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:04:41,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash -779574682, now seen corresponding path program 1 times [2020-10-29 14:04:41,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:41,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157332878] [2020-10-29 14:04:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:42,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:04:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:04:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:47,205 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:04:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:47,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:47,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157332878] [2020-10-29 14:04:47,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:47,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:47,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067064983] [2020-10-29 14:04:47,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:47,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:47,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:47,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:47,324 INFO L87 Difference]: Start difference. First operand 1759 states and 2882 transitions. Second operand 5 states. [2020-10-29 14:04:50,447 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:50,635 INFO L93 Difference]: Finished difference Result 4965 states and 8106 transitions. [2020-10-29 14:04:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:50,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:04:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:50,656 INFO L225 Difference]: With dead ends: 4965 [2020-10-29 14:04:50,656 INFO L226 Difference]: Without dead ends: 3418 [2020-10-29 14:04:50,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2020-10-29 14:04:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3415. [2020-10-29 14:04:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3415 states. [2020-10-29 14:04:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5570 transitions. [2020-10-29 14:04:50,931 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5570 transitions. Word has length 127 [2020-10-29 14:04:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:50,931 INFO L481 AbstractCegarLoop]: Abstraction has 3415 states and 5570 transitions. [2020-10-29 14:04:50,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5570 transitions. [2020-10-29 14:04:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:04:50,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:50,938 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] [2020-10-29 14:04:50,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:04:50,939 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash -396425256, now seen corresponding path program 1 times [2020-10-29 14:04:50,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:50,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845615707] [2020-10-29 14:04:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:55,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:55,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:04:55,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:04:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:56,524 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:56,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:56,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845615707] [2020-10-29 14:04:56,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:56,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:56,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310214448] [2020-10-29 14:04:56,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:56,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:56,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:56,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:56,621 INFO L87 Difference]: Start difference. First operand 3415 states and 5570 transitions. Second operand 5 states. [2020-10-29 14:04:59,713 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:59,914 INFO L93 Difference]: Finished difference Result 9955 states and 16207 transitions. [2020-10-29 14:04:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:59,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:04:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:59,953 INFO L225 Difference]: With dead ends: 9955 [2020-10-29 14:04:59,954 INFO L226 Difference]: Without dead ends: 6689 [2020-10-29 14:04:59,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:59,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2020-10-29 14:05:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6686. [2020-10-29 14:05:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6686 states. [2020-10-29 14:05:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6686 states to 6686 states and 10824 transitions. [2020-10-29 14:05:00,644 INFO L78 Accepts]: Start accepts. Automaton has 6686 states and 10824 transitions. Word has length 128 [2020-10-29 14:05:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:00,645 INFO L481 AbstractCegarLoop]: Abstraction has 6686 states and 10824 transitions. [2020-10-29 14:05:00,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6686 states and 10824 transitions. [2020-10-29 14:05:00,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:05:00,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:00,658 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] [2020-10-29 14:05:00,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:05:00,659 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:00,659 INFO L82 PathProgramCache]: Analyzing trace with hash -436598801, now seen corresponding path program 1 times [2020-10-29 14:05:00,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:00,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194161440] [2020-10-29 14:05:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:05,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:05:05,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:05:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 14:05:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:06,397 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:06,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:06,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194161440] [2020-10-29 14:05:06,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:06,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:06,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498374727] [2020-10-29 14:05:06,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:06,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:06,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:06,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:06,525 INFO L87 Difference]: Start difference. First operand 6686 states and 10824 transitions. Second operand 5 states. [2020-10-29 14:05:09,747 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:05:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:10,110 INFO L93 Difference]: Finished difference Result 19543 states and 31597 transitions. [2020-10-29 14:05:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:10,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:05:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:10,180 INFO L225 Difference]: With dead ends: 19543 [2020-10-29 14:05:10,180 INFO L226 Difference]: Without dead ends: 12996 [2020-10-29 14:05:10,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:05:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12996 states. [2020-10-29 14:05:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12996 to 12993. [2020-10-29 14:05:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12993 states. [2020-10-29 14:05:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 20909 transitions. [2020-10-29 14:05:11,306 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 20909 transitions. Word has length 128 [2020-10-29 14:05:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:11,306 INFO L481 AbstractCegarLoop]: Abstraction has 12993 states and 20909 transitions. [2020-10-29 14:05:11,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 20909 transitions. [2020-10-29 14:05:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 14:05:11,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:11,329 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] [2020-10-29 14:05:11,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:05:11,329 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1933540526, now seen corresponding path program 1 times [2020-10-29 14:05:11,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:11,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205122373] [2020-10-29 14:05:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:16,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 14:05:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:05:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:05:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,917 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:16,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:16,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205122373] [2020-10-29 14:05:16,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:16,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:05:16,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33541195] [2020-10-29 14:05:16,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:05:16,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:16,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:05:16,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:05:16,993 INFO L87 Difference]: Start difference. First operand 12993 states and 20909 transitions. Second operand 4 states. [2020-10-29 14:05:17,527 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:05:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:20,551 INFO L93 Difference]: Finished difference Result 28327 states and 46481 transitions. [2020-10-29 14:05:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:05:20,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-29 14:05:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:20,606 INFO L225 Difference]: With dead ends: 28327 [2020-10-29 14:05:20,606 INFO L226 Difference]: Without dead ends: 20356 [2020-10-29 14:05:20,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20356 states. [2020-10-29 14:05:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20356 to 20353. [2020-10-29 14:05:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20353 states. [2020-10-29 14:05:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20353 states to 20353 states and 33101 transitions. [2020-10-29 14:05:22,223 INFO L78 Accepts]: Start accepts. Automaton has 20353 states and 33101 transitions. Word has length 129 [2020-10-29 14:05:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:22,224 INFO L481 AbstractCegarLoop]: Abstraction has 20353 states and 33101 transitions. [2020-10-29 14:05:22,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:05:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20353 states and 33101 transitions. [2020-10-29 14:05:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:05:22,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:22,253 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] [2020-10-29 14:05:22,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:05:22,254 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:22,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:22,254 INFO L82 PathProgramCache]: Analyzing trace with hash -882336898, now seen corresponding path program 1 times [2020-10-29 14:05:22,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:22,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777030508] [2020-10-29 14:05:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:27,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 14:05:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:27,880 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:27,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:27,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:27,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777030508] [2020-10-29 14:05:27,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:27,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:27,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175697974] [2020-10-29 14:05:27,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:27,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:27,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:27,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:27,950 INFO L87 Difference]: Start difference. First operand 20353 states and 33101 transitions. Second operand 5 states. [2020-10-29 14:05:31,685 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:05:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:32,925 INFO L93 Difference]: Finished difference Result 59928 states and 97374 transitions. [2020-10-29 14:05:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:32,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 14:05:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:33,020 INFO L225 Difference]: With dead ends: 59928 [2020-10-29 14:05:33,020 INFO L226 Difference]: Without dead ends: 39753 [2020-10-29 14:05:33,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:05:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39753 states. [2020-10-29 14:05:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39753 to 39750. [2020-10-29 14:05:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39750 states. [2020-10-29 14:05:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39750 states to 39750 states and 64221 transitions. [2020-10-29 14:05:36,136 INFO L78 Accepts]: Start accepts. Automaton has 39750 states and 64221 transitions. Word has length 133 [2020-10-29 14:05:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:36,137 INFO L481 AbstractCegarLoop]: Abstraction has 39750 states and 64221 transitions. [2020-10-29 14:05:36,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 39750 states and 64221 transitions. [2020-10-29 14:05:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:05:36,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:36,186 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] [2020-10-29 14:05:36,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:05:36,186 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:36,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1287759922, now seen corresponding path program 1 times [2020-10-29 14:05:36,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:36,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847933715] [2020-10-29 14:05:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:36,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 14:05:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:41,869 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:41,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:41,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847933715] [2020-10-29 14:05:41,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:41,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:41,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984297876] [2020-10-29 14:05:41,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:41,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:41,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:41,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:41,945 INFO L87 Difference]: Start difference. First operand 39750 states and 64221 transitions. Second operand 5 states. [2020-10-29 14:05:47,492 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:05:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:50,977 INFO L93 Difference]: Finished difference Result 116439 states and 187997 transitions. [2020-10-29 14:05:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:05:50,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:05:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:51,131 INFO L225 Difference]: With dead ends: 116439 [2020-10-29 14:05:51,132 INFO L226 Difference]: Without dead ends: 77680 [2020-10-29 14:05:51,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:05:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77680 states. [2020-10-29 14:05:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77680 to 77677. [2020-10-29 14:05:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77677 states. [2020-10-29 14:05:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77677 states to 77677 states and 124685 transitions. [2020-10-29 14:05:57,811 INFO L78 Accepts]: Start accepts. Automaton has 77677 states and 124685 transitions. Word has length 134 [2020-10-29 14:05:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:57,812 INFO L481 AbstractCegarLoop]: Abstraction has 77677 states and 124685 transitions. [2020-10-29 14:05:57,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 77677 states and 124685 transitions. [2020-10-29 14:05:57,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:05:57,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:57,867 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] [2020-10-29 14:05:57,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:05:57,868 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:57,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1504599887, now seen corresponding path program 1 times [2020-10-29 14:05:57,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:57,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539773729] [2020-10-29 14:05:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:57,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 14:06:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:03,535 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:03,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:03,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:03,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:03,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539773729] [2020-10-29 14:06:03,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:03,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:03,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796984732] [2020-10-29 14:06:03,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:03,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:03,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:03,611 INFO L87 Difference]: Start difference. First operand 77677 states and 124685 transitions. Second operand 5 states. [2020-10-29 14:06:11,248 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:06:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:17,881 INFO L93 Difference]: Finished difference Result 229961 states and 369039 transitions. [2020-10-29 14:06:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:17,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:06:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:18,399 INFO L225 Difference]: With dead ends: 229961 [2020-10-29 14:06:18,399 INFO L226 Difference]: Without dead ends: 152385 [2020-10-29 14:06:18,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152385 states. [2020-10-29 14:06:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152385 to 152382. [2020-10-29 14:06:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152382 states. [2020-10-29 14:06:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152382 states to 152382 states and 243323 transitions. [2020-10-29 14:06:32,127 INFO L78 Accepts]: Start accepts. Automaton has 152382 states and 243323 transitions. Word has length 134 [2020-10-29 14:06:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:32,128 INFO L481 AbstractCegarLoop]: Abstraction has 152382 states and 243323 transitions. [2020-10-29 14:06:32,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 152382 states and 243323 transitions. [2020-10-29 14:06:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 14:06:32,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:32,277 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] [2020-10-29 14:06:32,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:06:32,277 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash 762459794, now seen corresponding path program 1 times [2020-10-29 14:06:32,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:32,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178340624] [2020-10-29 14:06:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:37,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 14:06:37,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:06:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 14:06:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:37,916 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:37,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:37,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178340624] [2020-10-29 14:06:37,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:37,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:06:37,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586796474] [2020-10-29 14:06:37,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:06:37,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:06:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:06:37,965 INFO L87 Difference]: Start difference. First operand 152382 states and 243323 transitions. Second operand 4 states. [2020-10-29 14:06:38,520 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:07:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:01,813 INFO L93 Difference]: Finished difference Result 370500 states and 600703 transitions. [2020-10-29 14:07:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:07:01,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-29 14:07:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:02,562 INFO L225 Difference]: With dead ends: 370500 [2020-10-29 14:07:02,562 INFO L226 Difference]: Without dead ends: 256833 [2020-10-29 14:07:02,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256833 states. [2020-10-29 14:07:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256833 to 256830. [2020-10-29 14:07:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256830 states. [2020-10-29 14:07:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256830 states to 256830 states and 413307 transitions. [2020-10-29 14:07:25,564 INFO L78 Accepts]: Start accepts. Automaton has 256830 states and 413307 transitions. Word has length 135 [2020-10-29 14:07:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:25,565 INFO L481 AbstractCegarLoop]: Abstraction has 256830 states and 413307 transitions. [2020-10-29 14:07:25,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:07:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 256830 states and 413307 transitions. [2020-10-29 14:07:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 14:07:25,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:25,652 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] [2020-10-29 14:07:25,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:07:25,653 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash 61672569, now seen corresponding path program 1 times [2020-10-29 14:07:25,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:25,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297917537] [2020-10-29 14:07:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 14:07:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:31,333 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:31,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297917537] [2020-10-29 14:07:31,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:31,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:31,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467579608] [2020-10-29 14:07:31,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:31,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:31,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:31,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:31,409 INFO L87 Difference]: Start difference. First operand 256830 states and 413307 transitions. Second operand 5 states.