/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:07:17,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:07:17,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:07:17,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:07:17,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:07:17,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:07:17,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:07:17,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:07:17,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:07:17,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:07:17,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:07:17,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:07:17,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:07:17,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:07:17,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:07:17,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:07:17,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:07:17,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:07:17,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:07:17,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:07:17,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:07:17,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:07:17,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:07:17,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:07:17,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:07:17,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:07:17,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:07:17,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:07:17,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:07:17,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:07:17,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:07:17,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:07:17,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:07:17,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:07:17,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:07:17,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:07:17,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:07:17,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:07:17,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:07:17,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:07:17,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:07:17,190 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 19:07:17,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:07:17,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:07:17,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:07:17,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:07:17,220 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:07:17,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:07:17,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:07:17,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:07:17,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:07:17,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:07:17,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:07:17,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:07:17,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:07:17,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:07:17,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:07:17,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:07:17,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:07:17,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:07:17,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:07:17,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:07:17,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:07:17,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:07:17,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:07:17,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:07:17,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:07:17,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:07:17,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:07:17,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:07:17,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:07:17,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:07:17,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:07:17,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:07:17,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:07:17,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:07:17,790 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:07:17,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 19:07:17,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13ea79fc/40fdc7d2661645909885d906c889299c/FLAGbb28331db [2020-10-28 19:07:18,616 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:07:18,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 19:07:18,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13ea79fc/40fdc7d2661645909885d906c889299c/FLAGbb28331db [2020-10-28 19:07:18,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13ea79fc/40fdc7d2661645909885d906c889299c [2020-10-28 19:07:18,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:07:18,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:07:18,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:07:18,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:07:18,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:07:18,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:07:18" (1/1) ... [2020-10-28 19:07:18,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256c48e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:18, skipping insertion in model container [2020-10-28 19:07:18,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:07:18" (1/1) ... [2020-10-28 19:07:18,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:07:18,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:07:19,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:07:19,314 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:07:19,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:07:19,440 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:07:19,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19 WrapperNode [2020-10-28 19:07:19,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:07:19,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:07:19,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:07:19,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:07:19,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (1/1) ... [2020-10-28 19:07:19,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:07:19,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:07:19,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:07:19,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:07:19,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (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 19:07:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:07:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:07:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:07:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:07:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:07:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:07:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:07:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:07:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:07:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:07:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:07:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:07:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:07:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:07:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:07:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:07:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:07:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 19:07:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:07:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:07:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:07:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:07:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:07:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:07:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:07:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:07:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:07:20,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:07:20,710 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:07:20,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:07:20 BoogieIcfgContainer [2020-10-28 19:07:20,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:07:20,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:07:20,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:07:20,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:07:20,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:07:18" (1/3) ... [2020-10-28 19:07:20,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1663ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:07:20, skipping insertion in model container [2020-10-28 19:07:20,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:07:19" (2/3) ... [2020-10-28 19:07:20,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1663ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:07:20, skipping insertion in model container [2020-10-28 19:07:20,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:07:20" (3/3) ... [2020-10-28 19:07:20,722 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 19:07:20,734 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:07:20,740 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:07:20,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:07:20,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:07:20,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:07:20,784 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:07:20,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:07:20,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:07:20,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:07:20,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:07:20,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:07:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-10-28 19:07:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 19:07:20,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:20,817 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] [2020-10-28 19:07:20,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -144079420, now seen corresponding path program 1 times [2020-10-28 19:07:20,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:20,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822526998] [2020-10-28 19:07:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:26,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:26,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 19:07:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:07:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 19:07:26,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:26,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 19:07:26,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 19:07:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:07:26,676 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:26,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:07:26,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:26,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:26,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:26,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:26,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:26,789 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 19:07:26,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822526998] [2020-10-28 19:07:26,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:26,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285409348] [2020-10-28 19:07:26,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:26,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:26,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:26,825 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2020-10-28 19:07:27,269 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:28,475 INFO L93 Difference]: Finished difference Result 341 states and 543 transitions. [2020-10-28 19:07:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:28,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-28 19:07:28,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:28,500 INFO L225 Difference]: With dead ends: 341 [2020-10-28 19:07:28,501 INFO L226 Difference]: Without dead ends: 225 [2020-10-28 19:07:28,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:07:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-28 19:07:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-10-28 19:07:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-28 19:07:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2020-10-28 19:07:28,579 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 330 transitions. Word has length 66 [2020-10-28 19:07:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:28,579 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-10-28 19:07:28,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 330 transitions. [2020-10-28 19:07:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 19:07:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:28,583 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] [2020-10-28 19:07:28,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:07:28,584 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1725853267, now seen corresponding path program 1 times [2020-10-28 19:07:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:28,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915586201] [2020-10-28 19:07:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:30,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:30,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 19:07:30,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:07:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2059 [2020-10-28 19:07:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:30,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 19:07:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:07:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:31,014 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:31,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:31,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:07:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:31,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:31,064 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 19:07:31,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915586201] [2020-10-28 19:07:31,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:31,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:31,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773804995] [2020-10-28 19:07:31,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:31,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:31,068 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. Second operand 4 states. [2020-10-28 19:07:31,374 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:32,221 INFO L93 Difference]: Finished difference Result 556 states and 860 transitions. [2020-10-28 19:07:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:32,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 19:07:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:32,226 INFO L225 Difference]: With dead ends: 556 [2020-10-28 19:07:32,226 INFO L226 Difference]: Without dead ends: 373 [2020-10-28 19:07:32,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:07:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-28 19:07:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 370. [2020-10-28 19:07:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-28 19:07:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 565 transitions. [2020-10-28 19:07:32,283 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 565 transitions. Word has length 67 [2020-10-28 19:07:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:32,284 INFO L481 AbstractCegarLoop]: Abstraction has 370 states and 565 transitions. [2020-10-28 19:07:32,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 565 transitions. [2020-10-28 19:07:32,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 19:07:32,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:32,287 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] [2020-10-28 19:07:32,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:07:32,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:32,288 INFO L82 PathProgramCache]: Analyzing trace with hash 22764944, now seen corresponding path program 1 times [2020-10-28 19:07:32,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:32,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455849089] [2020-10-28 19:07:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:33,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 19:07:33,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:07:33,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-28 19:07:33,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:33,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:07:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:07:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:33,647 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:33,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:07:33,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:33,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:33,696 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 19:07:33,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455849089] [2020-10-28 19:07:33,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:33,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:33,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729588179] [2020-10-28 19:07:33,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:33,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:33,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:33,699 INFO L87 Difference]: Start difference. First operand 370 states and 565 transitions. Second operand 4 states. [2020-10-28 19:07:34,040 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:34,744 INFO L93 Difference]: Finished difference Result 968 states and 1513 transitions. [2020-10-28 19:07:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:34,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 19:07:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:34,752 INFO L225 Difference]: With dead ends: 968 [2020-10-28 19:07:34,752 INFO L226 Difference]: Without dead ends: 637 [2020-10-28 19:07:34,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:07:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-28 19:07:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 634. [2020-10-28 19:07:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-28 19:07:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 981 transitions. [2020-10-28 19:07:34,797 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 981 transitions. Word has length 68 [2020-10-28 19:07:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:34,798 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 981 transitions. [2020-10-28 19:07:34,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 981 transitions. [2020-10-28 19:07:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 19:07:34,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:34,801 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] [2020-10-28 19:07:34,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:07:34,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:34,802 INFO L82 PathProgramCache]: Analyzing trace with hash -562039382, now seen corresponding path program 1 times [2020-10-28 19:07:34,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:34,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25152871] [2020-10-28 19:07:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:34,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 19:07:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:07:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-28 19:07:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:35,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 19:07:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:07:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:35,644 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:35,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:35,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:35,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:07:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:35,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:35,688 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 19:07:35,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25152871] [2020-10-28 19:07:35,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:35,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:35,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603876740] [2020-10-28 19:07:35,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:35,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:35,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:35,691 INFO L87 Difference]: Start difference. First operand 634 states and 981 transitions. Second operand 4 states. [2020-10-28 19:07:36,029 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:36,856 INFO L93 Difference]: Finished difference Result 1696 states and 2657 transitions. [2020-10-28 19:07:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:36,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-28 19:07:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:36,863 INFO L225 Difference]: With dead ends: 1696 [2020-10-28 19:07:36,863 INFO L226 Difference]: Without dead ends: 1101 [2020-10-28 19:07:36,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:07:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-10-28 19:07:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1098. [2020-10-28 19:07:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-10-28 19:07:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1705 transitions. [2020-10-28 19:07:36,929 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1705 transitions. Word has length 69 [2020-10-28 19:07:36,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:36,930 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1705 transitions. [2020-10-28 19:07:36,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1705 transitions. [2020-10-28 19:07:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 19:07:36,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:36,932 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] [2020-10-28 19:07:36,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:07:36,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash -28463610, now seen corresponding path program 1 times [2020-10-28 19:07:36,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:36,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136052595] [2020-10-28 19:07:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:38,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 19:07:38,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:07:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1233 [2020-10-28 19:07:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:38,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:07:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:07:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 19:07:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:38,576 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:38,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:38,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:07:38,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:38,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:38,634 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 19:07:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136052595] [2020-10-28 19:07:38,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:38,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 19:07:38,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796721384] [2020-10-28 19:07:38,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:07:38,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:38,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:07:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:07:38,649 INFO L87 Difference]: Start difference. First operand 1098 states and 1705 transitions. Second operand 8 states. [2020-10-28 19:07:39,027 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 19:07:40,153 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 19:07:40,457 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:40,784 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 19:07:41,144 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 19:07:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:41,437 INFO L93 Difference]: Finished difference Result 7452 states and 11701 transitions. [2020-10-28 19:07:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:07:41,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-28 19:07:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:41,473 INFO L225 Difference]: With dead ends: 7452 [2020-10-28 19:07:41,473 INFO L226 Difference]: Without dead ends: 6393 [2020-10-28 19:07:41,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-28 19:07:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2020-10-28 19:07:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 2154. [2020-10-28 19:07:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-10-28 19:07:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3337 transitions. [2020-10-28 19:07:41,699 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3337 transitions. Word has length 70 [2020-10-28 19:07:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:41,700 INFO L481 AbstractCegarLoop]: Abstraction has 2154 states and 3337 transitions. [2020-10-28 19:07:41,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:07:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3337 transitions. [2020-10-28 19:07:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 19:07:41,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:41,702 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] [2020-10-28 19:07:41,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:07:41,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1457190185, now seen corresponding path program 1 times [2020-10-28 19:07:41,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:41,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820087298] [2020-10-28 19:07:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:41,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:42,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:42,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 19:07:42,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:07:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-28 19:07:42,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:42,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:07:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 19:07:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:07:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:42,993 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:43,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:43,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:07:43,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:43,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:07:43,031 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 19:07:43,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820087298] [2020-10-28 19:07:43,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:43,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:07:43,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058768456] [2020-10-28 19:07:43,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:07:43,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:43,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:07:43,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:07:43,034 INFO L87 Difference]: Start difference. First operand 2154 states and 3337 transitions. Second operand 5 states. [2020-10-28 19:07:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:44,262 INFO L93 Difference]: Finished difference Result 4333 states and 6699 transitions. [2020-10-28 19:07:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:07:44,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-28 19:07:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:44,285 INFO L225 Difference]: With dead ends: 4333 [2020-10-28 19:07:44,285 INFO L226 Difference]: Without dead ends: 4330 [2020-10-28 19:07:44,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 19:07:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4330 states. [2020-10-28 19:07:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4330 to 2218. [2020-10-28 19:07:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2218 states. [2020-10-28 19:07:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3401 transitions. [2020-10-28 19:07:44,521 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3401 transitions. Word has length 71 [2020-10-28 19:07:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:44,521 INFO L481 AbstractCegarLoop]: Abstraction has 2218 states and 3401 transitions. [2020-10-28 19:07:44,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:07:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3401 transitions. [2020-10-28 19:07:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 19:07:44,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:44,527 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] [2020-10-28 19:07:44,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:07:44,527 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1925313705, now seen corresponding path program 1 times [2020-10-28 19:07:44,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:44,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287161855] [2020-10-28 19:07:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 19:07:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:07:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 19:07:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:45,572 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:07:45,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:45,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:45,617 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 19:07:45,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287161855] [2020-10-28 19:07:45,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:45,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:45,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271755812] [2020-10-28 19:07:45,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:45,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:45,620 INFO L87 Difference]: Start difference. First operand 2218 states and 3401 transitions. Second operand 4 states. [2020-10-28 19:07:46,003 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:46,906 INFO L93 Difference]: Finished difference Result 6352 states and 9741 transitions. [2020-10-28 19:07:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:46,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-28 19:07:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:46,929 INFO L225 Difference]: With dead ends: 6352 [2020-10-28 19:07:46,929 INFO L226 Difference]: Without dead ends: 4173 [2020-10-28 19:07:46,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:07:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2020-10-28 19:07:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4138. [2020-10-28 19:07:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4138 states. [2020-10-28 19:07:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 6281 transitions. [2020-10-28 19:07:47,312 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 6281 transitions. Word has length 72 [2020-10-28 19:07:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:47,312 INFO L481 AbstractCegarLoop]: Abstraction has 4138 states and 6281 transitions. [2020-10-28 19:07:47,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 6281 transitions. [2020-10-28 19:07:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 19:07:47,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:47,314 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] [2020-10-28 19:07:47,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:07:47,315 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash -779262329, now seen corresponding path program 1 times [2020-10-28 19:07:47,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:47,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808887157] [2020-10-28 19:07:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:47,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:47,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 19:07:47,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:07:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 19:07:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:48,007 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:48,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:48,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:48,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:48,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:07:48,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:48,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:48,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:48,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:48,060 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 19:07:48,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808887157] [2020-10-28 19:07:48,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:48,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:07:48,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278172065] [2020-10-28 19:07:48,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:07:48,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:07:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:07:48,063 INFO L87 Difference]: Start difference. First operand 4138 states and 6281 transitions. Second operand 5 states. [2020-10-28 19:07:48,415 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 19:07:49,485 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 19:07:50,391 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:50,717 INFO L93 Difference]: Finished difference Result 8467 states and 12943 transitions. [2020-10-28 19:07:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 19:07:50,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-28 19:07:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:50,751 INFO L225 Difference]: With dead ends: 8467 [2020-10-28 19:07:50,751 INFO L226 Difference]: Without dead ends: 6288 [2020-10-28 19:07:50,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 19:07:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2020-10-28 19:07:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 6250. [2020-10-28 19:07:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6250 states. [2020-10-28 19:07:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6250 states to 6250 states and 9481 transitions. [2020-10-28 19:07:51,330 INFO L78 Accepts]: Start accepts. Automaton has 6250 states and 9481 transitions. Word has length 73 [2020-10-28 19:07:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:51,331 INFO L481 AbstractCegarLoop]: Abstraction has 6250 states and 9481 transitions. [2020-10-28 19:07:51,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:07:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 6250 states and 9481 transitions. [2020-10-28 19:07:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 19:07:51,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:51,332 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] [2020-10-28 19:07:51,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:07:51,332 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:51,333 INFO L82 PathProgramCache]: Analyzing trace with hash -364325285, now seen corresponding path program 1 times [2020-10-28 19:07:51,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:51,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230007891] [2020-10-28 19:07:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:53,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:53,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:07:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:07:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:53,920 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:07:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:07:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:07:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:07:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:07:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:07:53,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:07:53,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:07:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:07:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:07:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:07:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:07:53,962 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 19:07:53,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230007891] [2020-10-28 19:07:53,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:07:53,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:07:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673653235] [2020-10-28 19:07:53,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:07:53,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:07:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:07:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:07:53,965 INFO L87 Difference]: Start difference. First operand 6250 states and 9481 transitions. Second operand 4 states. [2020-10-28 19:07:54,252 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:07:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:07:55,818 INFO L93 Difference]: Finished difference Result 13498 states and 20476 transitions. [2020-10-28 19:07:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:07:55,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-28 19:07:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:07:55,861 INFO L225 Difference]: With dead ends: 13498 [2020-10-28 19:07:55,861 INFO L226 Difference]: Without dead ends: 9391 [2020-10-28 19:07:55,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:07:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9391 states. [2020-10-28 19:07:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9391 to 9388. [2020-10-28 19:07:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9388 states. [2020-10-28 19:07:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 14155 transitions. [2020-10-28 19:07:56,762 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 14155 transitions. Word has length 74 [2020-10-28 19:07:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:07:56,762 INFO L481 AbstractCegarLoop]: Abstraction has 9388 states and 14155 transitions. [2020-10-28 19:07:56,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:07:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 14155 transitions. [2020-10-28 19:07:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 19:07:56,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:07:56,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:56,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:07:56,768 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:07:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:07:56,769 INFO L82 PathProgramCache]: Analyzing trace with hash 422549186, now seen corresponding path program 1 times [2020-10-28 19:07:56,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:07:56,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136950934] [2020-10-28 19:07:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:07:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:07:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:07:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:00,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:08:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 19:08:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:08:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:02,112 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:08:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:08:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:08:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:08:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:08:02,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:02,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:08:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:08:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:08:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:02,186 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:08:02,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136950934] [2020-10-28 19:08:02,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:08:02,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:08:02,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636964071] [2020-10-28 19:08:02,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:08:02,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:08:02,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:08:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:08:02,189 INFO L87 Difference]: Start difference. First operand 9388 states and 14155 transitions. Second operand 4 states. [2020-10-28 19:08:02,492 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:08:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:08:04,205 INFO L93 Difference]: Finished difference Result 27202 states and 40943 transitions. [2020-10-28 19:08:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:08:04,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 19:08:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:08:04,265 INFO L225 Difference]: With dead ends: 27202 [2020-10-28 19:08:04,266 INFO L226 Difference]: Without dead ends: 17855 [2020-10-28 19:08:04,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:08:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17855 states. [2020-10-28 19:08:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17855 to 17852. [2020-10-28 19:08:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17852 states. [2020-10-28 19:08:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17852 states to 17852 states and 26667 transitions. [2020-10-28 19:08:05,340 INFO L78 Accepts]: Start accepts. Automaton has 17852 states and 26667 transitions. Word has length 99 [2020-10-28 19:08:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:08:05,340 INFO L481 AbstractCegarLoop]: Abstraction has 17852 states and 26667 transitions. [2020-10-28 19:08:05,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:08:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17852 states and 26667 transitions. [2020-10-28 19:08:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 19:08:05,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:08:05,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:05,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:08:05,348 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:08:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:08:05,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1527371219, now seen corresponding path program 1 times [2020-10-28 19:08:05,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:08:05,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250026941] [2020-10-28 19:08:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:08:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:10,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 19:08:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:08:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:08:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:10,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:08:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:08:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 19:08:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:08:10,741 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:08:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:08:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:10,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:08:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:08:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:08:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:10,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:08:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:08:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:08:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:08:10,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250026941] [2020-10-28 19:08:10,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:08:10,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:08:10,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800168202] [2020-10-28 19:08:10,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:08:10,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:08:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:08:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:08:10,803 INFO L87 Difference]: Start difference. First operand 17852 states and 26667 transitions. Second operand 4 states. [2020-10-28 19:08:11,173 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:08:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:08:13,554 INFO L93 Difference]: Finished difference Result 51714 states and 77039 transitions. [2020-10-28 19:08:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:08:13,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 19:08:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:08:13,635 INFO L225 Difference]: With dead ends: 51714 [2020-10-28 19:08:13,635 INFO L226 Difference]: Without dead ends: 33903 [2020-10-28 19:08:13,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:08:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33903 states. [2020-10-28 19:08:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33903 to 33900. [2020-10-28 19:08:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33900 states. [2020-10-28 19:08:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33900 states to 33900 states and 50091 transitions. [2020-10-28 19:08:16,242 INFO L78 Accepts]: Start accepts. Automaton has 33900 states and 50091 transitions. Word has length 99 [2020-10-28 19:08:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:08:16,242 INFO L481 AbstractCegarLoop]: Abstraction has 33900 states and 50091 transitions. [2020-10-28 19:08:16,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:08:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33900 states and 50091 transitions. [2020-10-28 19:08:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 19:08:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:08:16,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:16,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:08:16,260 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:08:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:08:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash -114707282, now seen corresponding path program 1 times [2020-10-28 19:08:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:08:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173205192] [2020-10-28 19:08:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:08:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:21,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:08:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:21,609 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:08:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:08:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:21,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:21,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:08:21,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:08:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:08:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:08:21,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173205192] [2020-10-28 19:08:21,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:08:21,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:08:21,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97689409] [2020-10-28 19:08:21,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:08:21,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:08:21,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:08:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:08:21,652 INFO L87 Difference]: Start difference. First operand 33900 states and 50091 transitions. Second operand 4 states. [2020-10-28 19:08:21,963 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:08:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:08:25,937 INFO L93 Difference]: Finished difference Result 98098 states and 144431 transitions. [2020-10-28 19:08:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:08:25,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 19:08:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:08:26,097 INFO L225 Difference]: With dead ends: 98098 [2020-10-28 19:08:26,097 INFO L226 Difference]: Without dead ends: 64239 [2020-10-28 19:08:26,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:08:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64239 states. [2020-10-28 19:08:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64239 to 64236. [2020-10-28 19:08:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64236 states. [2020-10-28 19:08:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64236 states to 64236 states and 93739 transitions. [2020-10-28 19:08:30,425 INFO L78 Accepts]: Start accepts. Automaton has 64236 states and 93739 transitions. Word has length 99 [2020-10-28 19:08:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:08:30,425 INFO L481 AbstractCegarLoop]: Abstraction has 64236 states and 93739 transitions. [2020-10-28 19:08:30,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:08:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 64236 states and 93739 transitions. [2020-10-28 19:08:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 19:08:30,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:08:30,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:30,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:08:30,442 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:08:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:08:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1973251141, now seen corresponding path program 1 times [2020-10-28 19:08:30,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:08:30,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311202230] [2020-10-28 19:08:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:08:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:35,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 19:08:35,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:08:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:08:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:35,772 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:08:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:08:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:35,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:35,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:35,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:08:35,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:08:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:08:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:35,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:08:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:08:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:08:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:08:35,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311202230] [2020-10-28 19:08:35,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:08:35,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:08:35,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010500426] [2020-10-28 19:08:35,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:08:35,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:08:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:08:35,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:08:35,809 INFO L87 Difference]: Start difference. First operand 64236 states and 93739 transitions. Second operand 4 states. [2020-10-28 19:08:36,146 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:08:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:08:43,957 INFO L93 Difference]: Finished difference Result 185586 states and 269615 transitions. [2020-10-28 19:08:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:08:43,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-28 19:08:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:08:44,201 INFO L225 Difference]: With dead ends: 185586 [2020-10-28 19:08:44,201 INFO L226 Difference]: Without dead ends: 121391 [2020-10-28 19:08:44,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:08:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121391 states. [2020-10-28 19:08:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121391 to 121388. [2020-10-28 19:08:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121388 states. [2020-10-28 19:08:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121388 states to 121388 states and 174635 transitions. [2020-10-28 19:08:52,719 INFO L78 Accepts]: Start accepts. Automaton has 121388 states and 174635 transitions. Word has length 99 [2020-10-28 19:08:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:08:52,719 INFO L481 AbstractCegarLoop]: Abstraction has 121388 states and 174635 transitions. [2020-10-28 19:08:52,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:08:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 121388 states and 174635 transitions. [2020-10-28 19:08:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 19:08:52,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:08:52,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:52,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:08:52,743 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:08:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:08:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1042424203, now seen corresponding path program 1 times [2020-10-28 19:08:52,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:08:52,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856500759] [2020-10-28 19:08:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:08:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:53,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4824 [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:08:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 19:08:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 19:08:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:57,896 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:08:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:08:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:08:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:08:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:08:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:08:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:08:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:08:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:08:57,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856500759] [2020-10-28 19:08:57,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:08:57,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:08:57,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017666008] [2020-10-28 19:08:57,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:08:57,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:08:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:08:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:08:57,940 INFO L87 Difference]: Start difference. First operand 121388 states and 174635 transitions. Second operand 4 states. [2020-10-28 19:08:58,231 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 19:09:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:12,395 INFO L93 Difference]: Finished difference Result 348210 states and 498223 transitions. [2020-10-28 19:09:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:12,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 19:09:12,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:12,986 INFO L225 Difference]: With dead ends: 348210 [2020-10-28 19:09:12,987 INFO L226 Difference]: Without dead ends: 226863 [2020-10-28 19:09:13,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 19:09:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226863 states. [2020-10-28 19:09:27,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226863 to 226860. [2020-10-28 19:09:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226860 states. [2020-10-28 19:09:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226860 states to 226860 states and 321067 transitions. [2020-10-28 19:09:28,810 INFO L78 Accepts]: Start accepts. Automaton has 226860 states and 321067 transitions. Word has length 100 [2020-10-28 19:09:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:28,811 INFO L481 AbstractCegarLoop]: Abstraction has 226860 states and 321067 transitions. [2020-10-28 19:09:28,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 226860 states and 321067 transitions. [2020-10-28 19:09:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 19:09:28,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:28,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:28,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:09:28,853 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:28,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:28,853 INFO L82 PathProgramCache]: Analyzing trace with hash -637483701, now seen corresponding path program 1 times [2020-10-28 19:09:28,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:28,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26252154] [2020-10-28 19:09:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:28,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:33,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 19:09:33,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:09:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:34,234 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 19:09:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:34,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:34,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:34,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:34,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:34,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26252154] [2020-10-28 19:09:34,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:34,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:34,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169818609] [2020-10-28 19:09:34,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:34,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:34,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:34,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:34,286 INFO L87 Difference]: Start difference. First operand 226860 states and 321067 transitions. Second operand 4 states. [2020-10-28 19:09:39,012 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 19:09:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:46,064 INFO L93 Difference]: Finished difference Result 383792 states and 543432 transitions. [2020-10-28 19:09:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:46,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-28 19:09:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:46,355 INFO L225 Difference]: With dead ends: 383792 [2020-10-28 19:09:46,356 INFO L226 Difference]: Without dead ends: 156973 [2020-10-28 19:09:46,728 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 19:09:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156973 states. [2020-10-28 19:09:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156973 to 156970. [2020-10-28 19:09:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156970 states. [2020-10-28 19:09:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156970 states to 156970 states and 220324 transitions. [2020-10-28 19:09:57,353 INFO L78 Accepts]: Start accepts. Automaton has 156970 states and 220324 transitions. Word has length 101 [2020-10-28 19:09:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:57,353 INFO L481 AbstractCegarLoop]: Abstraction has 156970 states and 220324 transitions. [2020-10-28 19:09:57,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:57,354 INFO L276 IsEmpty]: Start isEmpty. Operand 156970 states and 220324 transitions. [2020-10-28 19:09:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 19:09:57,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:57,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:57,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:09:57,379 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:57,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1057067810, now seen corresponding path program 1 times [2020-10-28 19:09:57,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:57,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849964496] [2020-10-28 19:09:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking...