/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:57:09,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:57:09,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:57:09,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:57:09,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:57:09,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:57:09,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:57:09,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:57:09,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:57:09,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:57:09,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:57:09,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:57:09,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:57:09,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:57:09,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:57:09,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:57:09,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:57:09,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:57:09,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:57:09,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:57:09,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:57:09,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:57:09,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:57:09,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:57:09,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:57:09,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:57:09,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:57:09,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:57:09,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:57:09,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:57:09,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:57:09,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:57:09,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:57:09,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:57:09,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:57:09,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:57:09,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:57:09,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:57:09,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:57:09,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:57:09,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:57:09,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:57:09,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:57:09,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:57:09,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:57:09,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:57:09,280 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:57:09,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:57:09,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:57:09,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:57:09,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:57:09,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:57:09,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:57:09,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:57:09,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:57:09,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:57:09,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:57:09,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:57:09,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:57:09,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:57:09,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:57:09,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:57:09,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:57:09,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:57:09,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:57:09,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:57:09,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:57:09,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:57:09,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:57:09,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:57:09,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:57:09,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:57:09,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:57:09,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:57:09,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:57:09,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:57:09,701 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:57:09,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:57:09,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d97b93c0/8d9fbeb74f1947cda641f3e80320ecc0/FLAG68d1df09b [2020-10-27 05:57:10,487 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:57:10,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:57:10,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d97b93c0/8d9fbeb74f1947cda641f3e80320ecc0/FLAG68d1df09b [2020-10-27 05:57:10,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d97b93c0/8d9fbeb74f1947cda641f3e80320ecc0 [2020-10-27 05:57:10,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:57:10,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:57:10,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:57:10,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:57:10,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:57:10,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:10" (1/1) ... [2020-10-27 05:57:10,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29036726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:10, skipping insertion in model container [2020-10-27 05:57:10,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:10" (1/1) ... [2020-10-27 05:57:10,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:57:10,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:57:11,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:57:11,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:57:11,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:57:11,570 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:57:11,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11 WrapperNode [2020-10-27 05:57:11,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:57:11,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:57:11,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:57:11,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:57:11,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... [2020-10-27 05:57:11,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:57:11,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:57:11,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:57:11,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:57:11,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:57:11,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:57:11,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:57:11,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:57:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:57:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:57:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:57:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:57:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:57:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:57:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:57:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:57:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:57:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:57:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:57:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:57:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:57:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:57:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:57:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:57:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:57:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:57:13,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:57:13,525 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:57:13,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:13 BoogieIcfgContainer [2020-10-27 05:57:13,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:57:13,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:57:13,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:57:13,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:57:13,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:57:10" (1/3) ... [2020-10-27 05:57:13,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355bb0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:13, skipping insertion in model container [2020-10-27 05:57:13,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:11" (2/3) ... [2020-10-27 05:57:13,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355bb0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:57:13, skipping insertion in model container [2020-10-27 05:57:13,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:57:13" (3/3) ... [2020-10-27 05:57:13,537 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-27 05:57:13,549 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:57:13,554 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:57:13,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:57:13,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:57:13,598 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:57:13,599 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:57:13,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:57:13,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:57:13,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:57:13,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:57:13,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:57:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states. [2020-10-27 05:57:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 05:57:13,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:13,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:13,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:13,654 INFO L82 PathProgramCache]: Analyzing trace with hash -796746938, now seen corresponding path program 1 times [2020-10-27 05:57:13,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:13,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471775948] [2020-10-27 05:57:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:19,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 05:57:19,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:57:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:57:19,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:19,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:57:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:57:19,772 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:19,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:19,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:57:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471775948] [2020-10-27 05:57:19,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:19,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:19,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520746131] [2020-10-27 05:57:19,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:19,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:19,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:19,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:19,925 INFO L87 Difference]: Start difference. First operand 346 states. Second operand 5 states. [2020-10-27 05:57:23,033 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:57:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:24,259 INFO L93 Difference]: Finished difference Result 984 states and 1730 transitions. [2020-10-27 05:57:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:57:24,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-27 05:57:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:24,299 INFO L225 Difference]: With dead ends: 984 [2020-10-27 05:57:24,299 INFO L226 Difference]: Without dead ends: 651 [2020-10-27 05:57:24,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-27 05:57:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 648. [2020-10-27 05:57:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-27 05:57:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 945 transitions. [2020-10-27 05:57:24,445 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 945 transitions. Word has length 158 [2020-10-27 05:57:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:24,446 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 945 transitions. [2020-10-27 05:57:24,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 945 transitions. [2020-10-27 05:57:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 05:57:24,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:24,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:24,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:57:24,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1128729782, now seen corresponding path program 1 times [2020-10-27 05:57:24,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:24,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802855534] [2020-10-27 05:57:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:25,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 05:57:29,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:57:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:57:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 05:57:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:29,977 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:30,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:30,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:57:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:30,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802855534] [2020-10-27 05:57:30,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:30,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:30,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207719195] [2020-10-27 05:57:30,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:30,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:30,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:30,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:30,117 INFO L87 Difference]: Start difference. First operand 648 states and 945 transitions. Second operand 5 states. [2020-10-27 05:57:32,572 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:57:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:33,607 INFO L93 Difference]: Finished difference Result 1840 states and 2664 transitions. [2020-10-27 05:57:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:57:33,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 05:57:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:33,615 INFO L225 Difference]: With dead ends: 1840 [2020-10-27 05:57:33,616 INFO L226 Difference]: Without dead ends: 1229 [2020-10-27 05:57:33,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-27 05:57:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1226. [2020-10-27 05:57:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-10-27 05:57:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1760 transitions. [2020-10-27 05:57:33,716 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1760 transitions. Word has length 159 [2020-10-27 05:57:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:33,717 INFO L481 AbstractCegarLoop]: Abstraction has 1226 states and 1760 transitions. [2020-10-27 05:57:33,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1760 transitions. [2020-10-27 05:57:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 05:57:33,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:33,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:33,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:57:33,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1889164361, now seen corresponding path program 1 times [2020-10-27 05:57:33,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:33,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059393833] [2020-10-27 05:57:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 05:57:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:57:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:57:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:57:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:39,280 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:39,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:39,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:39,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:57:39,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:39,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:39,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059393833] [2020-10-27 05:57:39,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:39,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:39,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163391358] [2020-10-27 05:57:39,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:39,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:39,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:39,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:39,397 INFO L87 Difference]: Start difference. First operand 1226 states and 1760 transitions. Second operand 5 states. [2020-10-27 05:57:41,653 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:57:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:42,683 INFO L93 Difference]: Finished difference Result 3506 states and 5002 transitions. [2020-10-27 05:57:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:57:42,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 05:57:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:42,699 INFO L225 Difference]: With dead ends: 3506 [2020-10-27 05:57:42,699 INFO L226 Difference]: Without dead ends: 2340 [2020-10-27 05:57:42,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2020-10-27 05:57:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 2337. [2020-10-27 05:57:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-27 05:57:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3306 transitions. [2020-10-27 05:57:42,853 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3306 transitions. Word has length 160 [2020-10-27 05:57:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:42,854 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 3306 transitions. [2020-10-27 05:57:42,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3306 transitions. [2020-10-27 05:57:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 05:57:42,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:42,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:42,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:57:42,861 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -913112789, now seen corresponding path program 1 times [2020-10-27 05:57:42,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:42,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173251641] [2020-10-27 05:57:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:47,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 05:57:47,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:57:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:57:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:57:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:57:48,454 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:48,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:57:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:48,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173251641] [2020-10-27 05:57:48,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:48,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:48,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532118884] [2020-10-27 05:57:48,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:48,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:48,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:48,554 INFO L87 Difference]: Start difference. First operand 2337 states and 3306 transitions. Second operand 5 states. [2020-10-27 05:57:50,996 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:57:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:57:52,237 INFO L93 Difference]: Finished difference Result 6255 states and 8882 transitions. [2020-10-27 05:57:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:57:52,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 05:57:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:57:52,263 INFO L225 Difference]: With dead ends: 6255 [2020-10-27 05:57:52,263 INFO L226 Difference]: Without dead ends: 4488 [2020-10-27 05:57:52,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:57:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-27 05:57:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4485. [2020-10-27 05:57:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4485 states. [2020-10-27 05:57:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6258 transitions. [2020-10-27 05:57:52,583 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6258 transitions. Word has length 161 [2020-10-27 05:57:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:57:52,584 INFO L481 AbstractCegarLoop]: Abstraction has 4485 states and 6258 transitions. [2020-10-27 05:57:52,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:57:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6258 transitions. [2020-10-27 05:57:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 05:57:52,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:57:52,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:57:52,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:57:52,595 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:57:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:57:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1861242647, now seen corresponding path program 1 times [2020-10-27 05:57:52,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:57:52,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665069029] [2020-10-27 05:57:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:57:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 05:57:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:57:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 05:57:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:57:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:57:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:58,126 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:57:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:57:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:57:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:57:58,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:57:58,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:57:58,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:57:58,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:57:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:57:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:57:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:57:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:57:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:57:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:57:58,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665069029] [2020-10-27 05:57:58,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:57:58,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:57:58,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599599245] [2020-10-27 05:57:58,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:57:58,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:57:58,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:57:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:57:58,223 INFO L87 Difference]: Start difference. First operand 4485 states and 6258 transitions. Second operand 5 states. [2020-10-27 05:58:01,230 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:58:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:02,554 INFO L93 Difference]: Finished difference Result 12502 states and 17487 transitions. [2020-10-27 05:58:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:58:02,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 05:58:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:02,592 INFO L225 Difference]: With dead ends: 12502 [2020-10-27 05:58:02,592 INFO L226 Difference]: Without dead ends: 8655 [2020-10-27 05:58:02,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8655 states. [2020-10-27 05:58:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8655 to 8652. [2020-10-27 05:58:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-10-27 05:58:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 11891 transitions. [2020-10-27 05:58:03,220 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 11891 transitions. Word has length 162 [2020-10-27 05:58:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:03,220 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 11891 transitions. [2020-10-27 05:58:03,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 11891 transitions. [2020-10-27 05:58:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 05:58:03,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:03,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:03,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:58:03,238 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1364348308, now seen corresponding path program 1 times [2020-10-27 05:58:03,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:03,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181812562] [2020-10-27 05:58:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 05:58:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:08,799 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:08,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:08,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:58:08,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:08,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:08,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:58:08,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181812562] [2020-10-27 05:58:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:08,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664832880] [2020-10-27 05:58:08,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:08,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:08,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:08,888 INFO L87 Difference]: Start difference. First operand 8652 states and 11891 transitions. Second operand 5 states. [2020-10-27 05:58:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:10,980 INFO L93 Difference]: Finished difference Result 14173 states and 19461 transitions. [2020-10-27 05:58:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:58:10,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-27 05:58:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:11,001 INFO L225 Difference]: With dead ends: 14173 [2020-10-27 05:58:11,002 INFO L226 Difference]: Without dead ends: 5596 [2020-10-27 05:58:11,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:58:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2020-10-27 05:58:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2020-10-27 05:58:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5596 states. [2020-10-27 05:58:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 7675 transitions. [2020-10-27 05:58:11,406 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 7675 transitions. Word has length 163 [2020-10-27 05:58:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:11,407 INFO L481 AbstractCegarLoop]: Abstraction has 5596 states and 7675 transitions. [2020-10-27 05:58:11,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 7675 transitions. [2020-10-27 05:58:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:58:11,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:11,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:11,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:58:11,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash 514416492, now seen corresponding path program 1 times [2020-10-27 05:58:11,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:11,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177535586] [2020-10-27 05:58:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:11,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:16,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:16,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:58:16,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:58:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:58:16,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:16,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:58:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:58:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 05:58:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:16,932 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:16,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:58:16,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:58:17,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177535586] [2020-10-27 05:58:17,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:17,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:58:17,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951643077] [2020-10-27 05:58:17,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:58:17,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:58:17,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:58:17,019 INFO L87 Difference]: Start difference. First operand 5596 states and 7675 transitions. Second operand 9 states. [2020-10-27 05:58:17,473 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:58:19,818 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:58:20,265 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:58:21,678 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:58:22,119 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 05:58:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:22,563 INFO L93 Difference]: Finished difference Result 19448 states and 27947 transitions. [2020-10-27 05:58:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:58:22,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-27 05:58:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:22,608 INFO L225 Difference]: With dead ends: 19448 [2020-10-27 05:58:22,608 INFO L226 Difference]: Without dead ends: 14845 [2020-10-27 05:58:22,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:58:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14845 states. [2020-10-27 05:58:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14845 to 8668. [2020-10-27 05:58:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8668 states. [2020-10-27 05:58:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 11865 transitions. [2020-10-27 05:58:23,264 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 11865 transitions. Word has length 166 [2020-10-27 05:58:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:23,264 INFO L481 AbstractCegarLoop]: Abstraction has 8668 states and 11865 transitions. [2020-10-27 05:58:23,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:58:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 11865 transitions. [2020-10-27 05:58:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:58:23,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:23,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:23,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:58:23,277 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash -504156367, now seen corresponding path program 1 times [2020-10-27 05:58:23,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:23,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860072258] [2020-10-27 05:58:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:28,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:28,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:58:28,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:58:28,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:58:28,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:28,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:28,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:58:28,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 05:58:28,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:28,810 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:28,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:28,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:58:28,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860072258] [2020-10-27 05:58:28,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:28,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:28,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408719490] [2020-10-27 05:58:28,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:28,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:28,889 INFO L87 Difference]: Start difference. First operand 8668 states and 11865 transitions. Second operand 5 states. [2020-10-27 05:58:29,312 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:58:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:33,050 INFO L93 Difference]: Finished difference Result 16304 states and 22273 transitions. [2020-10-27 05:58:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:58:33,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 05:58:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:33,070 INFO L225 Difference]: With dead ends: 16304 [2020-10-27 05:58:33,070 INFO L226 Difference]: Without dead ends: 8639 [2020-10-27 05:58:33,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8639 states. [2020-10-27 05:58:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8639 to 8636. [2020-10-27 05:58:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8636 states. [2020-10-27 05:58:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 11793 transitions. [2020-10-27 05:58:33,760 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 11793 transitions. Word has length 166 [2020-10-27 05:58:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 8636 states and 11793 transitions. [2020-10-27 05:58:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 11793 transitions. [2020-10-27 05:58:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:58:33,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:33,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:33,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:58:33,772 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:33,773 INFO L82 PathProgramCache]: Analyzing trace with hash 787991120, now seen corresponding path program 1 times [2020-10-27 05:58:33,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:33,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114540389] [2020-10-27 05:58:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:38,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:58:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:58:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:39,286 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:39,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:39,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:58:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114540389] [2020-10-27 05:58:39,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:39,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126861656] [2020-10-27 05:58:39,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:39,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:39,348 INFO L87 Difference]: Start difference. First operand 8636 states and 11793 transitions. Second operand 5 states. [2020-10-27 05:58:42,452 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:58:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:44,111 INFO L93 Difference]: Finished difference Result 24182 states and 33081 transitions. [2020-10-27 05:58:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:58:44,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-27 05:58:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:44,145 INFO L225 Difference]: With dead ends: 24182 [2020-10-27 05:58:44,145 INFO L226 Difference]: Without dead ends: 16569 [2020-10-27 05:58:44,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:58:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16569 states. [2020-10-27 05:58:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16569 to 16566. [2020-10-27 05:58:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16566 states. [2020-10-27 05:58:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16566 states to 16566 states and 22307 transitions. [2020-10-27 05:58:45,514 INFO L78 Accepts]: Start accepts. Automaton has 16566 states and 22307 transitions. Word has length 167 [2020-10-27 05:58:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 16566 states and 22307 transitions. [2020-10-27 05:58:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 16566 states and 22307 transitions. [2020-10-27 05:58:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:58:45,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:45,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:45,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:58:45,535 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 167794581, now seen corresponding path program 1 times [2020-10-27 05:58:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:45,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360798293] [2020-10-27 05:58:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:50,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:58:50,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:58:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:58:50,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:58:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:58:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 05:58:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:51,048 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:58:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:58:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:51,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:58:51,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:58:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:58:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:58:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:58:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:58:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:58:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:58:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:58:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:58:51,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360798293] [2020-10-27 05:58:51,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:58:51,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:58:51,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859454407] [2020-10-27 05:58:51,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:58:51,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:58:51,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:58:51,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:58:51,177 INFO L87 Difference]: Start difference. First operand 16566 states and 22307 transitions. Second operand 5 states. [2020-10-27 05:58:54,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:58:54,029 INFO L93 Difference]: Finished difference Result 29435 states and 39692 transitions. [2020-10-27 05:58:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:58:54,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-27 05:58:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:58:54,057 INFO L225 Difference]: With dead ends: 29435 [2020-10-27 05:58:54,057 INFO L226 Difference]: Without dead ends: 13281 [2020-10-27 05:58:54,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:58:54,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2020-10-27 05:58:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 13281. [2020-10-27 05:58:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13281 states. [2020-10-27 05:58:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 17842 transitions. [2020-10-27 05:58:55,278 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 17842 transitions. Word has length 168 [2020-10-27 05:58:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:58:55,278 INFO L481 AbstractCegarLoop]: Abstraction has 13281 states and 17842 transitions. [2020-10-27 05:58:55,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:58:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 17842 transitions. [2020-10-27 05:58:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 05:58:55,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:58:55,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:58:55,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:58:55,291 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:58:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:58:55,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1463094970, now seen corresponding path program 1 times [2020-10-27 05:58:55,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:58:55,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856671273] [2020-10-27 05:58:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:58:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:58:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:58:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 05:59:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 05:59:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:00,777 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:00,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:00,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:00,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:00,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:59:00,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:00,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:00,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856671273] [2020-10-27 05:59:00,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:00,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:00,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326857076] [2020-10-27 05:59:00,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:00,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:00,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:00,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:00,838 INFO L87 Difference]: Start difference. First operand 13281 states and 17842 transitions. Second operand 5 states. [2020-10-27 05:59:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:03,336 INFO L93 Difference]: Finished difference Result 22267 states and 29866 transitions. [2020-10-27 05:59:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:59:03,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-27 05:59:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:03,351 INFO L225 Difference]: With dead ends: 22267 [2020-10-27 05:59:03,351 INFO L226 Difference]: Without dead ends: 9046 [2020-10-27 05:59:03,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:59:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2020-10-27 05:59:04,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9046. [2020-10-27 05:59:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9046 states. [2020-10-27 05:59:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 12102 transitions. [2020-10-27 05:59:04,074 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 12102 transitions. Word has length 170 [2020-10-27 05:59:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:04,074 INFO L481 AbstractCegarLoop]: Abstraction has 9046 states and 12102 transitions. [2020-10-27 05:59:04,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 12102 transitions. [2020-10-27 05:59:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 05:59:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:04,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:59:04,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:59:04,083 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1197271111, now seen corresponding path program 1 times [2020-10-27 05:59:04,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:04,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771842508] [2020-10-27 05:59:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:59:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 05:59:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:09,564 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:09,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:59:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:09,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:09,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:09,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771842508] [2020-10-27 05:59:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262906691] [2020-10-27 05:59:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:09,640 INFO L87 Difference]: Start difference. First operand 9046 states and 12102 transitions. Second operand 5 states. [2020-10-27 05:59:10,071 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:59:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:13,829 INFO L93 Difference]: Finished difference Result 16022 states and 21404 transitions. [2020-10-27 05:59:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:59:13,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-27 05:59:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:13,838 INFO L225 Difference]: With dead ends: 16022 [2020-10-27 05:59:13,838 INFO L226 Difference]: Without dead ends: 9040 [2020-10-27 05:59:13,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:59:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2020-10-27 05:59:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 9037. [2020-10-27 05:59:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9037 states. [2020-10-27 05:59:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9037 states to 9037 states and 12032 transitions. [2020-10-27 05:59:14,484 INFO L78 Accepts]: Start accepts. Automaton has 9037 states and 12032 transitions. Word has length 173 [2020-10-27 05:59:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:14,485 INFO L481 AbstractCegarLoop]: Abstraction has 9037 states and 12032 transitions. [2020-10-27 05:59:14,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9037 states and 12032 transitions. [2020-10-27 05:59:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 05:59:14,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:14,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:59:14,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:59:14,493 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:14,494 INFO L82 PathProgramCache]: Analyzing trace with hash 206265279, now seen corresponding path program 1 times [2020-10-27 05:59:14,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:14,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128177045] [2020-10-27 05:59:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:14,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:19,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 05:59:19,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:59:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 05:59:19,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:59:19,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:59:19,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 05:59:19,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:20,117 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:20,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:20,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:59:20,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:59:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:20,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128177045] [2020-10-27 05:59:20,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:20,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:59:20,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039613818] [2020-10-27 05:59:20,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:59:20,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:59:20,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:59:20,234 INFO L87 Difference]: Start difference. First operand 9037 states and 12032 transitions. Second operand 9 states. [2020-10-27 05:59:20,704 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:59:23,579 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:59:24,021 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:59:25,765 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:59:26,190 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 05:59:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:27,087 INFO L93 Difference]: Finished difference Result 30292 states and 41475 transitions. [2020-10-27 05:59:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:59:27,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-27 05:59:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:27,116 INFO L225 Difference]: With dead ends: 30292 [2020-10-27 05:59:27,116 INFO L226 Difference]: Without dead ends: 22904 [2020-10-27 05:59:27,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:59:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22904 states. [2020-10-27 05:59:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22904 to 15227. [2020-10-27 05:59:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15227 states. [2020-10-27 05:59:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15227 states to 15227 states and 20110 transitions. [2020-10-27 05:59:28,597 INFO L78 Accepts]: Start accepts. Automaton has 15227 states and 20110 transitions. Word has length 174 [2020-10-27 05:59:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:28,597 INFO L481 AbstractCegarLoop]: Abstraction has 15227 states and 20110 transitions. [2020-10-27 05:59:28,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:59:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 15227 states and 20110 transitions. [2020-10-27 05:59:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 05:59:28,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:28,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:59:28,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:59:28,609 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:28,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1836053315, now seen corresponding path program 1 times [2020-10-27 05:59:28,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:28,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064086287] [2020-10-27 05:59:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:33,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 05:59:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 05:59:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:34,086 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:34,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:34,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:34,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:34,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:59:34,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:34,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064086287] [2020-10-27 05:59:34,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:34,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:59:34,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310833155] [2020-10-27 05:59:34,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:59:34,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:34,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:59:34,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:59:34,138 INFO L87 Difference]: Start difference. First operand 15227 states and 20110 transitions. Second operand 5 states. [2020-10-27 05:59:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:36,856 INFO L93 Difference]: Finished difference Result 22395 states and 29673 transitions. [2020-10-27 05:59:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:59:36,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-27 05:59:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:36,869 INFO L225 Difference]: With dead ends: 22395 [2020-10-27 05:59:36,869 INFO L226 Difference]: Without dead ends: 12963 [2020-10-27 05:59:36,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:59:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12963 states. [2020-10-27 05:59:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12963 to 12963. [2020-10-27 05:59:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12963 states. [2020-10-27 05:59:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12963 states to 12963 states and 17061 transitions. [2020-10-27 05:59:38,139 INFO L78 Accepts]: Start accepts. Automaton has 12963 states and 17061 transitions. Word has length 174 [2020-10-27 05:59:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:38,139 INFO L481 AbstractCegarLoop]: Abstraction has 12963 states and 17061 transitions. [2020-10-27 05:59:38,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:59:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 12963 states and 17061 transitions. [2020-10-27 05:59:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 05:59:38,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:38,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:59:38,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:59:38,146 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1890825916, now seen corresponding path program 1 times [2020-10-27 05:59:38,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:38,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230688841] [2020-10-27 05:59:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:43,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 05:59:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:59:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:43,711 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:43,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:59:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:59:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:59:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:43,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230688841] [2020-10-27 05:59:43,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:43,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:59:43,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800051614] [2020-10-27 05:59:43,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:59:43,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:43,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:59:43,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:59:43,844 INFO L87 Difference]: Start difference. First operand 12963 states and 17061 transitions. Second operand 9 states. [2020-10-27 05:59:44,304 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:59:47,001 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:59:47,469 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:59:49,022 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:59:49,556 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 05:59:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:59:51,069 INFO L93 Difference]: Finished difference Result 36917 states and 49523 transitions. [2020-10-27 05:59:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:59:51,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-10-27 05:59:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:59:51,106 INFO L225 Difference]: With dead ends: 36917 [2020-10-27 05:59:51,106 INFO L226 Difference]: Without dead ends: 29303 [2020-10-27 05:59:51,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:59:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29303 states. [2020-10-27 05:59:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29303 to 16747. [2020-10-27 05:59:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16747 states. [2020-10-27 05:59:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16747 states to 16747 states and 21925 transitions. [2020-10-27 05:59:52,805 INFO L78 Accepts]: Start accepts. Automaton has 16747 states and 21925 transitions. Word has length 176 [2020-10-27 05:59:52,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:59:52,805 INFO L481 AbstractCegarLoop]: Abstraction has 16747 states and 21925 transitions. [2020-10-27 05:59:52,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:59:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 16747 states and 21925 transitions. [2020-10-27 05:59:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 05:59:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:59:52,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:59:52,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:59:52,814 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:59:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:59:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1013758450, now seen corresponding path program 1 times [2020-10-27 05:59:52,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:59:52,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065805415] [2020-10-27 05:59:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:59:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:53,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:54,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 05:59:54,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:59:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-27 05:59:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:59:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 05:59:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-27 05:59:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:54,822 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:59:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:59:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:59:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:59:54,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:59:54,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:59:54,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:59:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:59:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:59:54,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065805415] [2020-10-27 05:59:54,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:59:54,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:59:54,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845425378] [2020-10-27 05:59:54,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:59:54,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:59:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:59:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:59:54,901 INFO L87 Difference]: Start difference. First operand 16747 states and 21925 transitions. Second operand 4 states. [2020-10-27 05:59:55,350 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 06:00:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:00,148 INFO L93 Difference]: Finished difference Result 38681 states and 52434 transitions. [2020-10-27 06:00:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:00:00,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-27 06:00:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:00,180 INFO L225 Difference]: With dead ends: 38681 [2020-10-27 06:00:00,180 INFO L226 Difference]: Without dead ends: 29881 [2020-10-27 06:00:00,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29881 states. [2020-10-27 06:00:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29881 to 29878. [2020-10-27 06:00:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29878 states. [2020-10-27 06:00:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29878 states to 29878 states and 39565 transitions. [2020-10-27 06:00:03,284 INFO L78 Accepts]: Start accepts. Automaton has 29878 states and 39565 transitions. Word has length 176 [2020-10-27 06:00:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:03,284 INFO L481 AbstractCegarLoop]: Abstraction has 29878 states and 39565 transitions. [2020-10-27 06:00:03,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:00:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29878 states and 39565 transitions. [2020-10-27 06:00:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 06:00:03,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:03,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:03,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:00:03,299 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:03,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1602093306, now seen corresponding path program 1 times [2020-10-27 06:00:03,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:03,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3661202] [2020-10-27 06:00:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:00:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:04,580 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 06:00:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:04,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:04,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:04,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3661202] [2020-10-27 06:00:04,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:04,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:00:04,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033121764] [2020-10-27 06:00:04,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:00:04,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:04,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:00:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:00:04,628 INFO L87 Difference]: Start difference. First operand 29878 states and 39565 transitions. Second operand 4 states. [2020-10-27 06:00:09,006 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 06:00:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:10,621 INFO L93 Difference]: Finished difference Result 54690 states and 73884 transitions. [2020-10-27 06:00:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:00:10,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-27 06:00:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:10,656 INFO L225 Difference]: With dead ends: 54690 [2020-10-27 06:00:10,656 INFO L226 Difference]: Without dead ends: 27101 [2020-10-27 06:00:10,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27101 states. [2020-10-27 06:00:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27101 to 26824. [2020-10-27 06:00:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26824 states. [2020-10-27 06:00:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26824 states to 26824 states and 36252 transitions. [2020-10-27 06:00:13,745 INFO L78 Accepts]: Start accepts. Automaton has 26824 states and 36252 transitions. Word has length 176 [2020-10-27 06:00:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:13,746 INFO L481 AbstractCegarLoop]: Abstraction has 26824 states and 36252 transitions. [2020-10-27 06:00:13,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:00:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 26824 states and 36252 transitions. [2020-10-27 06:00:13,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 06:00:13,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:13,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:13,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:00:13,758 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:13,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1658081569, now seen corresponding path program 1 times [2020-10-27 06:00:13,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:13,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788133321] [2020-10-27 06:00:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:16,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2619 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 06:00:16,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:16,876 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 06:00:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:00:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:17,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788133321] [2020-10-27 06:00:17,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:17,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:17,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658385417] [2020-10-27 06:00:17,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:00:17,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:00:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:00:17,026 INFO L87 Difference]: Start difference. First operand 26824 states and 36252 transitions. Second operand 6 states. [2020-10-27 06:00:17,494 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 06:00:20,910 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 06:00:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:26,072 INFO L93 Difference]: Finished difference Result 66684 states and 92685 transitions. [2020-10-27 06:00:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 06:00:26,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-27 06:00:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:26,138 INFO L225 Difference]: With dead ends: 66684 [2020-10-27 06:00:26,138 INFO L226 Difference]: Without dead ends: 49177 [2020-10-27 06:00:26,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:00:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49177 states. [2020-10-27 06:00:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49177 to 49150. [2020-10-27 06:00:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49150 states. [2020-10-27 06:00:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49150 states to 49150 states and 67071 transitions. [2020-10-27 06:00:32,029 INFO L78 Accepts]: Start accepts. Automaton has 49150 states and 67071 transitions. Word has length 179 [2020-10-27 06:00:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:32,030 INFO L481 AbstractCegarLoop]: Abstraction has 49150 states and 67071 transitions. [2020-10-27 06:00:32,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:00:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 49150 states and 67071 transitions. [2020-10-27 06:00:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 06:00:32,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:32,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:32,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 06:00:32,050 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:32,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1201114377, now seen corresponding path program 1 times [2020-10-27 06:00:32,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:32,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349358990] [2020-10-27 06:00:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:37,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 06:00:37,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:00:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 06:00:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:00:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:00:37,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 06:00:37,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:37,551 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 06:00:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:37,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:00:37,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:37,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349358990] [2020-10-27 06:00:37,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:37,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:37,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836512165] [2020-10-27 06:00:37,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:00:37,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:37,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:00:37,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:00:37,623 INFO L87 Difference]: Start difference. First operand 49150 states and 67071 transitions. Second operand 6 states. [2020-10-27 06:00:38,086 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 06:00:40,985 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 06:00:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:46,485 INFO L93 Difference]: Finished difference Result 92809 states and 129125 transitions. [2020-10-27 06:00:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 06:00:46,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-27 06:00:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:46,545 INFO L225 Difference]: With dead ends: 92809 [2020-10-27 06:00:46,545 INFO L226 Difference]: Without dead ends: 48873 [2020-10-27 06:00:46,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:00:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48873 states.