/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:26:12,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:26:12,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:26:12,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:26:12,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:26:12,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:26:12,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:26:12,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:26:12,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:26:12,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:26:12,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:26:12,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:26:12,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:26:12,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:26:12,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:26:12,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:26:12,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:26:12,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:26:12,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:26:12,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:26:12,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:26:12,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:26:12,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:26:12,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:26:12,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:26:12,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:26:12,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:26:12,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:26:12,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:26:12,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:26:12,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:26:12,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:26:12,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:26:12,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:26:12,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:26:12,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:26:12,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:26:12,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:26:12,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:26:12,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:26:12,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:26:12,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:26:12,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:26:12,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:26:12,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:26:12,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:26:12,288 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:26:12,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:26:12,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:26:12,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:26:12,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:26:12,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:26:12,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:26:12,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:26:12,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:26:12,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:26:12,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:26:12,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:26:12,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:26:12,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:26:12,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:26:12,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:26:12,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:26:12,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:26:12,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:26:12,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:26:12,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:26:12,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:26:12,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:26:12,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:26:12,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:26:12,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:26:12,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:26:12,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:26:12,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:26:12,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:26:12,746 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:26:12,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:26:12,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6070aebf8/68498ee3a95c47bcbaf15b88f7d839ac/FLAGe6bd1a70f [2020-10-28 00:26:13,553 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:26:13,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:26:13,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6070aebf8/68498ee3a95c47bcbaf15b88f7d839ac/FLAGe6bd1a70f [2020-10-28 00:26:13,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6070aebf8/68498ee3a95c47bcbaf15b88f7d839ac [2020-10-28 00:26:13,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:26:13,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:26:13,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:26:13,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:26:13,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:26:13,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:13" (1/1) ... [2020-10-28 00:26:13,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c7768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:13, skipping insertion in model container [2020-10-28 00:26:13,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:13" (1/1) ... [2020-10-28 00:26:13,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:26:13,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:26:14,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:26:14,407 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:26:14,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:26:14,653 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:26:14,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14 WrapperNode [2020-10-28 00:26:14,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:26:14,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:26:14,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:26:14,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:26:14,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... [2020-10-28 00:26:14,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:26:14,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:26:14,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:26:14,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:26:14,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:26:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:26:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:26:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:26:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:26:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:26:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:26:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:26:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:26:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:26:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:26:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:26:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:26:16,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:26:16,391 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:26:16,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:16 BoogieIcfgContainer [2020-10-28 00:26:16,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:26:16,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:26:16,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:26:16,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:26:16,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:26:13" (1/3) ... [2020-10-28 00:26:16,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e06b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:16, skipping insertion in model container [2020-10-28 00:26:16,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:14" (2/3) ... [2020-10-28 00:26:16,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e06b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:16, skipping insertion in model container [2020-10-28 00:26:16,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:16" (3/3) ... [2020-10-28 00:26:16,404 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:26:16,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:26:16,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:26:16,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:26:16,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:26:16,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:26:16,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:26:16,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:26:16,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:26:16,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:26:16,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:26:16,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:26:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2020-10-28 00:26:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 00:26:16,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:16,512 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] [2020-10-28 00:26:16,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:16,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:16,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1189511786, now seen corresponding path program 1 times [2020-10-28 00:26:16,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:16,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296036721] [2020-10-28 00:26:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:19,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 00:26:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:26:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 00:26:22,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:26:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:26:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:26:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 00:26:22,577 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:26:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:22,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:22,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:22,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:22,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296036721] [2020-10-28 00:26:22,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:22,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:26:22,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102143778] [2020-10-28 00:26:22,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:26:22,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:22,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:26:22,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:22,704 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 5 states. [2020-10-28 00:26:24,975 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:26:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:26,042 INFO L93 Difference]: Finished difference Result 794 states and 1396 transitions. [2020-10-28 00:26:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:26:26,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-28 00:26:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:26,089 INFO L225 Difference]: With dead ends: 794 [2020-10-28 00:26:26,089 INFO L226 Difference]: Without dead ends: 518 [2020-10-28 00:26:26,100 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 [2020-10-28 00:26:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-28 00:26:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 503. [2020-10-28 00:26:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-28 00:26:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 733 transitions. [2020-10-28 00:26:26,268 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 733 transitions. Word has length 103 [2020-10-28 00:26:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:26,268 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 733 transitions. [2020-10-28 00:26:26,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:26:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 733 transitions. [2020-10-28 00:26:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 00:26:26,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:26,280 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] [2020-10-28 00:26:26,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:26:26,280 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:26,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1696543292, now seen corresponding path program 1 times [2020-10-28 00:26:26,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:26,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460301524] [2020-10-28 00:26:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 00:26:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:26:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:26:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:26:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:26:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:26:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:26:31,680 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:26:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 00:26:31,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:31,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460301524] [2020-10-28 00:26:31,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:31,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:26:31,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135194104] [2020-10-28 00:26:31,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:26:31,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:31,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:26:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:31,755 INFO L87 Difference]: Start difference. First operand 503 states and 733 transitions. Second operand 5 states. [2020-10-28 00:26:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:33,058 INFO L93 Difference]: Finished difference Result 983 states and 1432 transitions. [2020-10-28 00:26:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:33,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-28 00:26:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:33,067 INFO L225 Difference]: With dead ends: 983 [2020-10-28 00:26:33,068 INFO L226 Difference]: Without dead ends: 503 [2020-10-28 00:26:33,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:26:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-28 00:26:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2020-10-28 00:26:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-28 00:26:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 731 transitions. [2020-10-28 00:26:33,110 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 731 transitions. Word has length 104 [2020-10-28 00:26:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:33,110 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 731 transitions. [2020-10-28 00:26:33,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:26:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 731 transitions. [2020-10-28 00:26:33,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:26:33,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:33,114 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] [2020-10-28 00:26:33,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:26:33,114 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash 369994231, now seen corresponding path program 1 times [2020-10-28 00:26:33,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:33,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873673795] [2020-10-28 00:26:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:33,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:33,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:37,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:38,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:26:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 00:26:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:38,529 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:26:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:38,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:38,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:26:38,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:38,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873673795] [2020-10-28 00:26:38,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:38,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:38,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933359809] [2020-10-28 00:26:38,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:38,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:38,616 INFO L87 Difference]: Start difference. First operand 503 states and 731 transitions. Second operand 4 states. [2020-10-28 00:26:40,276 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:26:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:41,261 INFO L93 Difference]: Finished difference Result 1079 states and 1580 transitions. [2020-10-28 00:26:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:41,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:26:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:41,267 INFO L225 Difference]: With dead ends: 1079 [2020-10-28 00:26:41,267 INFO L226 Difference]: Without dead ends: 740 [2020-10-28 00:26:41,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-28 00:26:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 727. [2020-10-28 00:26:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-28 00:26:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1047 transitions. [2020-10-28 00:26:41,326 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1047 transitions. Word has length 105 [2020-10-28 00:26:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:41,328 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1047 transitions. [2020-10-28 00:26:41,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1047 transitions. [2020-10-28 00:26:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 00:26:41,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:41,336 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] [2020-10-28 00:26:41,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:26:41,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:41,337 INFO L82 PathProgramCache]: Analyzing trace with hash 248601229, now seen corresponding path program 1 times [2020-10-28 00:26:41,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:41,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470593292] [2020-10-28 00:26:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 00:26:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:26:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:26:46,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 00:26:46,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:46,721 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:26:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:46,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:46,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470593292] [2020-10-28 00:26:46,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:46,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:46,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928276700] [2020-10-28 00:26:46,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:46,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:46,779 INFO L87 Difference]: Start difference. First operand 727 states and 1047 transitions. Second operand 4 states. [2020-10-28 00:26:48,488 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:26:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:48,619 INFO L93 Difference]: Finished difference Result 1520 states and 2274 transitions. [2020-10-28 00:26:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:48,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-28 00:26:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:48,629 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 00:26:48,632 INFO L226 Difference]: Without dead ends: 968 [2020-10-28 00:26:48,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-28 00:26:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 944. [2020-10-28 00:26:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-10-28 00:26:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1399 transitions. [2020-10-28 00:26:48,728 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1399 transitions. Word has length 105 [2020-10-28 00:26:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:48,729 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1399 transitions. [2020-10-28 00:26:48,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1399 transitions. [2020-10-28 00:26:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 00:26:48,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:48,731 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] [2020-10-28 00:26:48,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:26:48,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1174741396, now seen corresponding path program 1 times [2020-10-28 00:26:48,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:48,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743422395] [2020-10-28 00:26:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:49,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 00:26:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 00:26:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:54,189 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:26:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:26:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:26:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:26:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:26:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:26:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:26:54,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743422395] [2020-10-28 00:26:54,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:26:54,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:26:54,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264821391] [2020-10-28 00:26:54,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:26:54,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:26:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:26:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:26:54,272 INFO L87 Difference]: Start difference. First operand 944 states and 1399 transitions. Second operand 4 states. [2020-10-28 00:26:55,962 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:26:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:26:56,245 INFO L93 Difference]: Finished difference Result 2102 states and 3236 transitions. [2020-10-28 00:26:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:26:56,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-28 00:26:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:26:56,258 INFO L225 Difference]: With dead ends: 2102 [2020-10-28 00:26:56,258 INFO L226 Difference]: Without dead ends: 1373 [2020-10-28 00:26:56,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:26:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-10-28 00:26:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1328. [2020-10-28 00:26:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-28 00:26:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2022 transitions. [2020-10-28 00:26:56,360 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2022 transitions. Word has length 107 [2020-10-28 00:26:56,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:26:56,360 INFO L481 AbstractCegarLoop]: Abstraction has 1328 states and 2022 transitions. [2020-10-28 00:26:56,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:26:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2022 transitions. [2020-10-28 00:26:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 00:26:56,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:26:56,363 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] [2020-10-28 00:26:56,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:26:56,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:26:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:26:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1979933497, now seen corresponding path program 1 times [2020-10-28 00:26:56,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:26:56,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883077627] [2020-10-28 00:26:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:26:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:26:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:26:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:01,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 00:27:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:27:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:27:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:27:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 00:27:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:01,779 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:01,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:01,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:01,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883077627] [2020-10-28 00:27:01,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:01,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:01,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286224560] [2020-10-28 00:27:01,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:01,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:01,864 INFO L87 Difference]: Start difference. First operand 1328 states and 2022 transitions. Second operand 5 states. [2020-10-28 00:27:03,421 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:27:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:04,560 INFO L93 Difference]: Finished difference Result 3389 states and 5168 transitions. [2020-10-28 00:27:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:04,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-28 00:27:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:04,577 INFO L225 Difference]: With dead ends: 3389 [2020-10-28 00:27:04,577 INFO L226 Difference]: Without dead ends: 2116 [2020-10-28 00:27:04,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-10-28 00:27:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2083. [2020-10-28 00:27:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-10-28 00:27:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3164 transitions. [2020-10-28 00:27:04,752 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3164 transitions. Word has length 108 [2020-10-28 00:27:04,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:04,754 INFO L481 AbstractCegarLoop]: Abstraction has 2083 states and 3164 transitions. [2020-10-28 00:27:04,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3164 transitions. [2020-10-28 00:27:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 00:27:04,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:04,757 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] [2020-10-28 00:27:04,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:27:04,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1308745966, now seen corresponding path program 1 times [2020-10-28 00:27:04,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:04,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942022332] [2020-10-28 00:27:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:09,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:27:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:27:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:10,162 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:10,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942022332] [2020-10-28 00:27:10,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:10,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:10,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068311780] [2020-10-28 00:27:10,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:10,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:10,217 INFO L87 Difference]: Start difference. First operand 2083 states and 3164 transitions. Second operand 5 states. [2020-10-28 00:27:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:11,590 INFO L93 Difference]: Finished difference Result 4137 states and 6284 transitions. [2020-10-28 00:27:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:11,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-28 00:27:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:11,602 INFO L225 Difference]: With dead ends: 4137 [2020-10-28 00:27:11,602 INFO L226 Difference]: Without dead ends: 2081 [2020-10-28 00:27:11,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:27:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-10-28 00:27:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2081. [2020-10-28 00:27:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-10-28 00:27:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 3159 transitions. [2020-10-28 00:27:11,758 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 3159 transitions. Word has length 109 [2020-10-28 00:27:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:11,758 INFO L481 AbstractCegarLoop]: Abstraction has 2081 states and 3159 transitions. [2020-10-28 00:27:11,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 3159 transitions. [2020-10-28 00:27:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 00:27:11,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:11,761 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] [2020-10-28 00:27:11,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:27:11,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:11,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1285632762, now seen corresponding path program 1 times [2020-10-28 00:27:11,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:11,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446846057] [2020-10-28 00:27:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:12,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 00:27:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:27:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:27:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 00:27:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 00:27:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:17,115 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:17,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446846057] [2020-10-28 00:27:17,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:17,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:17,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962113158] [2020-10-28 00:27:17,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:17,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:17,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:17,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:17,171 INFO L87 Difference]: Start difference. First operand 2081 states and 3159 transitions. Second operand 4 states. [2020-10-28 00:27:18,459 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:27:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:19,145 INFO L93 Difference]: Finished difference Result 4818 states and 7407 transitions. [2020-10-28 00:27:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:19,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-28 00:27:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:19,163 INFO L225 Difference]: With dead ends: 4818 [2020-10-28 00:27:19,163 INFO L226 Difference]: Without dead ends: 3145 [2020-10-28 00:27:19,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2020-10-28 00:27:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 3112. [2020-10-28 00:27:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 00:27:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4701 transitions. [2020-10-28 00:27:19,383 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4701 transitions. Word has length 110 [2020-10-28 00:27:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:19,383 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4701 transitions. [2020-10-28 00:27:19,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4701 transitions. [2020-10-28 00:27:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 00:27:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:19,386 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] [2020-10-28 00:27:19,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:27:19,387 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1981172550, now seen corresponding path program 1 times [2020-10-28 00:27:19,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:19,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635837033] [2020-10-28 00:27:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3992 [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:27:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:27:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:23,715 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:23,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:23,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635837033] [2020-10-28 00:27:23,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:23,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209287296] [2020-10-28 00:27:23,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:23,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:23,764 INFO L87 Difference]: Start difference. First operand 3112 states and 4701 transitions. Second operand 4 states. [2020-10-28 00:27:25,358 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:27:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:25,861 INFO L93 Difference]: Finished difference Result 7725 states and 11993 transitions. [2020-10-28 00:27:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:25,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-28 00:27:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:25,886 INFO L225 Difference]: With dead ends: 7725 [2020-10-28 00:27:25,886 INFO L226 Difference]: Without dead ends: 5037 [2020-10-28 00:27:25,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2020-10-28 00:27:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 4830. [2020-10-28 00:27:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4830 states. [2020-10-28 00:27:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 7461 transitions. [2020-10-28 00:27:26,294 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 7461 transitions. Word has length 112 [2020-10-28 00:27:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:26,295 INFO L481 AbstractCegarLoop]: Abstraction has 4830 states and 7461 transitions. [2020-10-28 00:27:26,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 7461 transitions. [2020-10-28 00:27:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 00:27:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:26,299 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] [2020-10-28 00:27:26,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:27:26,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:26,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1243488032, now seen corresponding path program 1 times [2020-10-28 00:27:26,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:26,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596364568] [2020-10-28 00:27:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 00:27:31,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:27:31,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:27:31,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:27:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 00:27:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:31,738 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:31,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:31,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:31,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:31,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:31,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596364568] [2020-10-28 00:27:31,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:31,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:31,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979041479] [2020-10-28 00:27:31,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:31,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:31,806 INFO L87 Difference]: Start difference. First operand 4830 states and 7461 transitions. Second operand 5 states. [2020-10-28 00:27:33,327 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:27:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:34,508 INFO L93 Difference]: Finished difference Result 9774 states and 15049 transitions. [2020-10-28 00:27:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:34,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-28 00:27:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:34,533 INFO L225 Difference]: With dead ends: 9774 [2020-10-28 00:27:34,533 INFO L226 Difference]: Without dead ends: 4975 [2020-10-28 00:27:34,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2020-10-28 00:27:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4947. [2020-10-28 00:27:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4947 states. [2020-10-28 00:27:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7593 transitions. [2020-10-28 00:27:34,902 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7593 transitions. Word has length 113 [2020-10-28 00:27:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:34,903 INFO L481 AbstractCegarLoop]: Abstraction has 4947 states and 7593 transitions. [2020-10-28 00:27:34,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7593 transitions. [2020-10-28 00:27:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 00:27:34,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:34,906 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] [2020-10-28 00:27:34,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:27:34,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1395125692, now seen corresponding path program 1 times [2020-10-28 00:27:34,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:34,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609178176] [2020-10-28 00:27:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 00:27:39,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:27:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4979 [2020-10-28 00:27:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:39,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:27:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 00:27:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 00:27:40,283 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:40,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609178176] [2020-10-28 00:27:40,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:40,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:40,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467843926] [2020-10-28 00:27:40,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:40,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:40,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:40,319 INFO L87 Difference]: Start difference. First operand 4947 states and 7593 transitions. Second operand 5 states. [2020-10-28 00:27:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:41,708 INFO L93 Difference]: Finished difference Result 8518 states and 13119 transitions. [2020-10-28 00:27:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:41,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-28 00:27:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:41,731 INFO L225 Difference]: With dead ends: 8518 [2020-10-28 00:27:41,731 INFO L226 Difference]: Without dead ends: 4947 [2020-10-28 00:27:41,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:27:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2020-10-28 00:27:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4947. [2020-10-28 00:27:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4947 states. [2020-10-28 00:27:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7591 transitions. [2020-10-28 00:27:41,999 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7591 transitions. Word has length 114 [2020-10-28 00:27:41,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:42,000 INFO L481 AbstractCegarLoop]: Abstraction has 4947 states and 7591 transitions. [2020-10-28 00:27:42,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7591 transitions. [2020-10-28 00:27:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 00:27:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:42,003 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] [2020-10-28 00:27:42,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:27:42,004 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash -409626703, now seen corresponding path program 1 times [2020-10-28 00:27:42,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:42,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079356257] [2020-10-28 00:27:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:42,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 00:27:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:47,389 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:47,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079356257] [2020-10-28 00:27:47,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:47,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:47,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244414822] [2020-10-28 00:27:47,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:47,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:47,434 INFO L87 Difference]: Start difference. First operand 4947 states and 7591 transitions. Second operand 5 states. [2020-10-28 00:27:48,983 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:27:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:50,480 INFO L93 Difference]: Finished difference Result 12765 states and 19581 transitions. [2020-10-28 00:27:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:50,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-28 00:27:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:50,502 INFO L225 Difference]: With dead ends: 12765 [2020-10-28 00:27:50,502 INFO L226 Difference]: Without dead ends: 7879 [2020-10-28 00:27:50,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2020-10-28 00:27:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 7826. [2020-10-28 00:27:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7826 states. [2020-10-28 00:27:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7826 states to 7826 states and 11898 transitions. [2020-10-28 00:27:51,056 INFO L78 Accepts]: Start accepts. Automaton has 7826 states and 11898 transitions. Word has length 115 [2020-10-28 00:27:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:51,056 INFO L481 AbstractCegarLoop]: Abstraction has 7826 states and 11898 transitions. [2020-10-28 00:27:51,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7826 states and 11898 transitions. [2020-10-28 00:27:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 00:27:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:51,061 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] [2020-10-28 00:27:51,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:27:51,061 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash -761953696, now seen corresponding path program 1 times [2020-10-28 00:27:51,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:51,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394775456] [2020-10-28 00:27:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 00:27:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 00:27:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:56,412 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:27:56,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:56,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394775456] [2020-10-28 00:27:56,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:56,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105920702] [2020-10-28 00:27:56,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:56,460 INFO L87 Difference]: Start difference. First operand 7826 states and 11898 transitions. Second operand 4 states. [2020-10-28 00:27:58,080 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:27:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:59,706 INFO L93 Difference]: Finished difference Result 20898 states and 32014 transitions. [2020-10-28 00:27:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:59,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-28 00:27:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:59,746 INFO L225 Difference]: With dead ends: 20898 [2020-10-28 00:27:59,746 INFO L226 Difference]: Without dead ends: 13960 [2020-10-28 00:27:59,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13960 states. [2020-10-28 00:28:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13960 to 13888. [2020-10-28 00:28:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13888 states. [2020-10-28 00:28:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13888 states to 13888 states and 20912 transitions. [2020-10-28 00:28:00,838 INFO L78 Accepts]: Start accepts. Automaton has 13888 states and 20912 transitions. Word has length 117 [2020-10-28 00:28:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:00,839 INFO L481 AbstractCegarLoop]: Abstraction has 13888 states and 20912 transitions. [2020-10-28 00:28:00,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:28:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13888 states and 20912 transitions. [2020-10-28 00:28:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 00:28:00,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:00,846 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] [2020-10-28 00:28:00,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:28:00,846 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1664561117, now seen corresponding path program 1 times [2020-10-28 00:28:00,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:00,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323765335] [2020-10-28 00:28:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:28:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:28:05,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:06,263 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:06,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:06,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:06,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:28:06,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:06,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323765335] [2020-10-28 00:28:06,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:06,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:06,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086882131] [2020-10-28 00:28:06,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:06,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:06,326 INFO L87 Difference]: Start difference. First operand 13888 states and 20912 transitions. Second operand 5 states. [2020-10-28 00:28:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:08,201 INFO L93 Difference]: Finished difference Result 24883 states and 37633 transitions. [2020-10-28 00:28:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:08,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-28 00:28:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:08,229 INFO L225 Difference]: With dead ends: 24883 [2020-10-28 00:28:08,230 INFO L226 Difference]: Without dead ends: 11562 [2020-10-28 00:28:08,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:28:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11562 states. [2020-10-28 00:28:09,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11562 to 11562. [2020-10-28 00:28:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11562 states. [2020-10-28 00:28:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11562 states to 11562 states and 17380 transitions. [2020-10-28 00:28:09,214 INFO L78 Accepts]: Start accepts. Automaton has 11562 states and 17380 transitions. Word has length 117 [2020-10-28 00:28:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:09,214 INFO L481 AbstractCegarLoop]: Abstraction has 11562 states and 17380 transitions. [2020-10-28 00:28:09,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 11562 states and 17380 transitions. [2020-10-28 00:28:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 00:28:09,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:09,219 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] [2020-10-28 00:28:09,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:28:09,219 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1743332249, now seen corresponding path program 1 times [2020-10-28 00:28:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:09,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132426098] [2020-10-28 00:28:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:09,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:14,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:14,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 00:28:14,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:28:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:28:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:28:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 00:28:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:14,588 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:14,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:14,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132426098] [2020-10-28 00:28:14,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:14,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:14,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408459855] [2020-10-28 00:28:14,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:14,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:14,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:14,656 INFO L87 Difference]: Start difference. First operand 11562 states and 17380 transitions. Second operand 5 states. [2020-10-28 00:28:16,136 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:28:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:17,873 INFO L93 Difference]: Finished difference Result 23287 states and 34952 transitions. [2020-10-28 00:28:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:28:17,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-28 00:28:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:17,900 INFO L225 Difference]: With dead ends: 23287 [2020-10-28 00:28:17,901 INFO L226 Difference]: Without dead ends: 11816 [2020-10-28 00:28:17,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:28:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11816 states. [2020-10-28 00:28:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11816 to 11653. [2020-10-28 00:28:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11653 states. [2020-10-28 00:28:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11653 states to 11653 states and 17470 transitions. [2020-10-28 00:28:19,105 INFO L78 Accepts]: Start accepts. Automaton has 11653 states and 17470 transitions. Word has length 120 [2020-10-28 00:28:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:19,105 INFO L481 AbstractCegarLoop]: Abstraction has 11653 states and 17470 transitions. [2020-10-28 00:28:19,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11653 states and 17470 transitions. [2020-10-28 00:28:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 00:28:19,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:19,111 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] [2020-10-28 00:28:19,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:28:19,111 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:19,111 INFO L82 PathProgramCache]: Analyzing trace with hash 172168601, now seen corresponding path program 1 times [2020-10-28 00:28:19,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:19,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540830429] [2020-10-28 00:28:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:24,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 00:28:24,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:28:24,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:28:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 00:28:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:28:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:24,469 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:24,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540830429] [2020-10-28 00:28:24,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:24,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:24,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137849530] [2020-10-28 00:28:24,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:24,509 INFO L87 Difference]: Start difference. First operand 11653 states and 17470 transitions. Second operand 5 states. [2020-10-28 00:28:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:26,494 INFO L93 Difference]: Finished difference Result 19870 states and 29947 transitions. [2020-10-28 00:28:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:26,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 00:28:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:26,517 INFO L225 Difference]: With dead ends: 19870 [2020-10-28 00:28:26,518 INFO L226 Difference]: Without dead ends: 11653 [2020-10-28 00:28:26,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:28:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11653 states. [2020-10-28 00:28:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11653 to 11653. [2020-10-28 00:28:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11653 states. [2020-10-28 00:28:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11653 states to 11653 states and 17465 transitions. [2020-10-28 00:28:27,551 INFO L78 Accepts]: Start accepts. Automaton has 11653 states and 17465 transitions. Word has length 121 [2020-10-28 00:28:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:27,551 INFO L481 AbstractCegarLoop]: Abstraction has 11653 states and 17465 transitions. [2020-10-28 00:28:27,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 11653 states and 17465 transitions. [2020-10-28 00:28:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 00:28:27,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:27,555 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] [2020-10-28 00:28:27,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:28:27,555 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash 590245664, now seen corresponding path program 1 times [2020-10-28 00:28:27,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:27,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395921349] [2020-10-28 00:28:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 00:28:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:32,976 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:32,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:32,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:33,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395921349] [2020-10-28 00:28:33,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:33,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:33,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375562096] [2020-10-28 00:28:33,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:33,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:33,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:33,034 INFO L87 Difference]: Start difference. First operand 11653 states and 17465 transitions. Second operand 5 states. [2020-10-28 00:28:34,332 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:28:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:35,767 INFO L93 Difference]: Finished difference Result 18871 states and 28461 transitions. [2020-10-28 00:28:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:28:35,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-28 00:28:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:35,785 INFO L225 Difference]: With dead ends: 18871 [2020-10-28 00:28:35,785 INFO L226 Difference]: Without dead ends: 11154 [2020-10-28 00:28:35,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:28:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2020-10-28 00:28:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 10877. [2020-10-28 00:28:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10877 states. [2020-10-28 00:28:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10877 states to 10877 states and 16230 transitions. [2020-10-28 00:28:36,687 INFO L78 Accepts]: Start accepts. Automaton has 10877 states and 16230 transitions. Word has length 122 [2020-10-28 00:28:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:36,688 INFO L481 AbstractCegarLoop]: Abstraction has 10877 states and 16230 transitions. [2020-10-28 00:28:36,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 10877 states and 16230 transitions. [2020-10-28 00:28:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:28:36,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:36,691 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] [2020-10-28 00:28:36,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:28:36,691 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash -852385362, now seen corresponding path program 1 times [2020-10-28 00:28:36,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:36,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000828196] [2020-10-28 00:28:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 00:28:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:42,113 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:42,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000828196] [2020-10-28 00:28:42,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:42,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:42,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963712194] [2020-10-28 00:28:42,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:42,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:42,152 INFO L87 Difference]: Start difference. First operand 10877 states and 16230 transitions. Second operand 5 states. [2020-10-28 00:28:42,466 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 00:28:43,622 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 00:28:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:46,855 INFO L93 Difference]: Finished difference Result 37476 states and 57932 transitions. [2020-10-28 00:28:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:28:46,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-28 00:28:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:46,896 INFO L225 Difference]: With dead ends: 37476 [2020-10-28 00:28:46,896 INFO L226 Difference]: Without dead ends: 28310 [2020-10-28 00:28:46,912 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 [2020-10-28 00:28:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28310 states. [2020-10-28 00:28:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28310 to 28274. [2020-10-28 00:28:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28274 states. [2020-10-28 00:28:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28274 states to 28274 states and 43470 transitions. [2020-10-28 00:28:49,557 INFO L78 Accepts]: Start accepts. Automaton has 28274 states and 43470 transitions. Word has length 124 [2020-10-28 00:28:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:49,557 INFO L481 AbstractCegarLoop]: Abstraction has 28274 states and 43470 transitions. [2020-10-28 00:28:49,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 28274 states and 43470 transitions. [2020-10-28 00:28:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:28:49,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:49,561 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] [2020-10-28 00:28:49,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:28:49,561 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:49,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2065123980, now seen corresponding path program 1 times [2020-10-28 00:28:49,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:49,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761835799] [2020-10-28 00:28:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:51,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 00:28:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:51,677 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 00:28:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:51,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:51,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:51,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:28:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:28:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 00:28:51,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:51,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761835799] [2020-10-28 00:28:51,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:51,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:51,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511642010] [2020-10-28 00:28:51,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:28:51,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:28:51,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:28:51,742 INFO L87 Difference]: Start difference. First operand 28274 states and 43470 transitions. Second operand 6 states. [2020-10-28 00:28:52,079 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:28:53,344 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 00:28:59,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:59,253 INFO L93 Difference]: Finished difference Result 81589 states and 126426 transitions. [2020-10-28 00:28:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 00:28:59,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-28 00:28:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:59,363 INFO L225 Difference]: With dead ends: 81589 [2020-10-28 00:28:59,363 INFO L226 Difference]: Without dead ends: 54349 [2020-10-28 00:28:59,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:28:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54349 states. [2020-10-28 00:29:04,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54349 to 54307. [2020-10-28 00:29:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54307 states. [2020-10-28 00:29:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54307 states to 54307 states and 83734 transitions. [2020-10-28 00:29:05,202 INFO L78 Accepts]: Start accepts. Automaton has 54307 states and 83734 transitions. Word has length 124 [2020-10-28 00:29:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:05,203 INFO L481 AbstractCegarLoop]: Abstraction has 54307 states and 83734 transitions. [2020-10-28 00:29:05,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:29:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 54307 states and 83734 transitions. [2020-10-28 00:29:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:29:05,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:05,206 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] [2020-10-28 00:29:05,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 00:29:05,207 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:05,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1351492281, now seen corresponding path program 1 times [2020-10-28 00:29:05,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:05,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138260259] [2020-10-28 00:29:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 00:29:05,274 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 00:29:05,274 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 00:29:05,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 00:29:05,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 12:29:05 BoogieIcfgContainer [2020-10-28 00:29:05,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 00:29:05,324 INFO L168 Benchmark]: Toolchain (without parser) took 171454.71 ms. Allocated memory was 160.4 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 134.0 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 317.9 MB. Max. memory is 8.0 GB. [2020-10-28 00:29:05,324 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 160.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 00:29:05,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.47 ms. Allocated memory is still 160.4 MB. Free memory was 133.4 MB in the beginning and 109.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-28 00:29:05,325 INFO L168 Benchmark]: Boogie Preprocessor took 121.46 ms. Allocated memory is still 160.4 MB. Free memory was 109.1 MB in the beginning and 105.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 00:29:05,326 INFO L168 Benchmark]: RCFGBuilder took 1616.66 ms. Allocated memory was 160.4 MB in the beginning and 205.5 MB in the end (delta: 45.1 MB). Free memory was 105.1 MB in the beginning and 167.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 56.0 MB. Max. memory is 8.0 GB. [2020-10-28 00:29:05,326 INFO L168 Benchmark]: TraceAbstraction took 168926.06 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 167.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 304.8 MB. Max. memory is 8.0 GB. [2020-10-28 00:29:05,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 160.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 777.47 ms. Allocated memory is still 160.4 MB. Free memory was 133.4 MB in the beginning and 109.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.46 ms. Allocated memory is still 160.4 MB. Free memory was 109.1 MB in the beginning and 105.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1616.66 ms. Allocated memory was 160.4 MB in the beginning and 205.5 MB in the end (delta: 45.1 MB). Free memory was 105.1 MB in the beginning and 167.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 56.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 168926.06 ms. Allocated memory was 205.5 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 167.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 304.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1248; [L74] int __return_1394; [L75] int __return_1872; [L76] int __return_1528; [L77] int __return_1653; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_uchar() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_uchar() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_uchar() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND TRUE !(init__r121 == 0) [L141] init__tmp = 1 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L1969] COND TRUE !(init__r121 == 0) [L1971] COND TRUE !(ep23 == 0) [L1973] init__tmp___0 = 1 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L1946] COND TRUE !(init__r231 == 0) [L1948] COND TRUE !(ep31 == 0) [L1950] init__tmp___1 = 1 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND TRUE !(init__r231 == 0) [L156] init__tmp___2 = 1 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND TRUE !(init__r311 == 0) [L161] init__tmp___3 = 1 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L1877] COND TRUE !(init__r311 == 0) [L1879] COND TRUE !(ep12 == 0) [L1881] init__tmp___4 = 1 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE !(init__r122 == 0) [L189] COND TRUE !(init__r132 == 0) [L191] COND TRUE !(init__r212 == 0) [L193] COND TRUE !(init__r232 == 0) [L195] COND TRUE !(init__r312 == 0) [L197] COND TRUE !(init__r322 == 0) [L199] COND TRUE ((int)max1) == ((int)id1) [L201] COND TRUE ((int)max2) == ((int)id2) [L203] COND TRUE ((int)max3) == ((int)id3) [L205] COND TRUE ((int)st1) == 0 [L207] COND TRUE ((int)st2) == 0 [L209] COND TRUE ((int)st3) == 0 [L211] COND TRUE ((int)nl1) == 0 [L213] COND TRUE ((int)nl2) == 0 [L215] COND TRUE ((int)nl3) == 0 [L217] COND TRUE ((int)mode1) == 0 [L219] COND TRUE ((int)mode2) == 0 [L221] COND TRUE ((int)mode3) == 0 [L223] COND TRUE !(newmax1 == 0) [L225] COND TRUE !(newmax2 == 0) [L227] COND TRUE !(newmax3 == 0) [L229] init__tmp___5 = 1 [L230] __return_1248 = init__tmp___5 [L231] main__i2 = __return_1248 [L232] COND TRUE main__i2 != 0 [L234] p12_old = nomsg [L235] p12_new = nomsg [L236] p13_old = nomsg [L237] p13_new = nomsg [L238] p21_old = nomsg [L239] p21_new = nomsg [L240] p23_old = nomsg [L241] p23_new = nomsg [L242] p31_old = nomsg [L243] p31_new = nomsg [L244] p32_old = nomsg [L245] p32_new = nomsg [L246] main__i2 = 0 [L248] _Bool node1__newmax; [L249] node1__newmax = 0 [L250] COND FALSE !(!(mode1 == 0)) [L256] COND TRUE ((int)r1) < 2 [L258] COND TRUE !(ep12 == 0) [L260] COND TRUE !(newmax1 == 0) [L262] int node1____CPAchecker_TMP_0; [L263] COND TRUE max1 != nomsg [L265] COND TRUE p12_new == nomsg [L267] node1____CPAchecker_TMP_0 = max1 [L269] p12_new = node1____CPAchecker_TMP_0 [L271] COND FALSE !(!(ep13 == 0)) [L284] mode1 = 1 [L286] _Bool node2__newmax; [L287] node2__newmax = 0 [L288] COND FALSE !(!(mode2 == 0)) [L294] COND TRUE ((int)r2) < 2 [L296] COND FALSE !(!(ep21 == 0)) [L309] COND TRUE !(ep23 == 0) [L311] COND TRUE !(newmax2 == 0) [L313] int node2____CPAchecker_TMP_1; [L314] COND TRUE max2 != nomsg [L316] COND TRUE p23_new == nomsg [L318] node2____CPAchecker_TMP_1 = max2 [L320] p23_new = node2____CPAchecker_TMP_1 [L322] mode2 = 1 [L324] _Bool node3__newmax; [L325] node3__newmax = 0 [L326] COND FALSE !(!(mode3 == 0)) [L332] COND TRUE ((int)r3) < 2 [L334] COND TRUE !(ep31 == 0) [L336] COND TRUE !(newmax3 == 0) [L338] int node3____CPAchecker_TMP_0; [L339] COND TRUE max3 != nomsg [L341] COND TRUE p31_new == nomsg [L343] node3____CPAchecker_TMP_0 = max3 [L345] p31_new = node3____CPAchecker_TMP_0 [L347] COND FALSE !(!(ep32 == 0)) [L360] mode3 = 1 [L361] p12_old = p12_new [L362] p12_new = nomsg [L363] p13_old = p13_new [L364] p13_new = nomsg [L365] p21_old = p21_new [L366] p21_new = nomsg [L367] p23_old = p23_new [L368] p23_new = nomsg [L369] p31_old = p31_new [L370] p31_new = nomsg [L371] p32_old = p32_new [L372] p32_new = nomsg [L374] int check__tmp; [L375] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L377] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L379] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L381] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] COND FALSE !(((int)r1) >= 2) [L399] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L401] COND TRUE ((int)r1) < 2 [L403] check__tmp = 1 [L404] __return_1394 = check__tmp [L405] main__c1 = __return_1394 [L407] _Bool __tmp_1; [L408] __tmp_1 = main__c1 [L409] _Bool assert__arg; [L410] assert__arg = __tmp_1 [L411] COND FALSE !(assert__arg == 0) [L418] _Bool node1__newmax; [L419] node1__newmax = 0 [L420] COND TRUE !(mode1 == 0) [L422] COND FALSE !(r1 == 255) [L428] r1 = r1 + 1 [L429] COND FALSE !(!(ep21 == 0)) [L438] COND TRUE !(ep31 == 0) [L440] m1 = p31_old [L441] p31_old = nomsg [L442] COND FALSE !(((int)m1) > ((int)max1)) [L447] newmax1 = node1__newmax [L448] COND TRUE ((int)r1) == 1 [L450] COND TRUE ((int)max1) == ((int)id1) [L452] st1 = 1 [L453] mode1 = 0 [L455] _Bool node2__newmax; [L456] node2__newmax = 0 [L457] COND TRUE !(mode2 == 0) [L459] COND FALSE !(r2 == 255) [L465] r2 = r2 + 1 [L466] COND TRUE !(ep12 == 0) [L468] m2 = p12_old [L469] p12_old = nomsg [L470] COND TRUE ((int)m2) > ((int)max2) [L472] max2 = m2 [L473] node2__newmax = 1 [L475] COND FALSE !(!(ep32 == 0)) [L484] newmax2 = node2__newmax [L485] COND FALSE !(((int)r2) == 2) [L491] mode2 = 0 [L493] _Bool node3__newmax; [L494] node3__newmax = 0 [L495] COND TRUE !(mode3 == 0) [L497] COND FALSE !(r3 == 255) [L503] r3 = r3 + 1 [L504] COND FALSE !(!(ep13 == 0)) [L513] COND TRUE !(ep23 == 0) [L515] m3 = p23_old [L516] p23_old = nomsg [L517] COND TRUE ((int)m3) > ((int)max3) [L519] max3 = m3 [L520] node3__newmax = 1 [L522] newmax3 = node3__newmax [L523] COND FALSE !(((int)r3) == 2) [L529] mode3 = 0 [L530] p12_old = p12_new [L531] p12_new = nomsg [L532] p13_old = p13_new [L533] p13_new = nomsg [L534] p21_old = p21_new [L535] p21_new = nomsg [L536] p23_old = p23_new [L537] p23_new = nomsg [L538] p31_old = p31_new [L539] p31_new = nomsg [L540] p32_old = p32_new [L541] p32_new = nomsg [L543] int check__tmp; [L544] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L546] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L548] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L550] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L564] check__tmp = 0 [L565] __return_1872 = check__tmp [L566] main__c1 = __return_1872 [L568] _Bool __tmp_2; [L569] __tmp_2 = main__c1 [L570] _Bool assert__arg; [L571] assert__arg = __tmp_2 [L572] COND TRUE assert__arg == 0 [L574] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 168.8s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10141 SDtfs, 8402 SDslu, 8756 SDs, 0 SdLazy, 10893 SolverSat, 219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54307occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 1041 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 98.2s InterpolantComputationTime, 2274 NumberOfCodeBlocks, 2274 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2131 ConstructedInterpolants, 0 QuantifiedInterpolants, 1388092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...