/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:34:15,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:34:15,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:34:16,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:34:16,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:34:16,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:34:16,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:34:16,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:34:16,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:34:16,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:34:16,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:34:16,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:34:16,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:34:16,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:34:16,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:34:16,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:34:16,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:34:16,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:34:16,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:34:16,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:34:16,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:34:16,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:34:16,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:34:16,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:34:16,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:34:16,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:34:16,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:34:16,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:34:16,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:34:16,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:34:16,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:34:16,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:34:16,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:34:16,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:34:16,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:34:16,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:34:16,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:34:16,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:34:16,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:34:16,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:34:16,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:34:16,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:34:16,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:34:16,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:34:16,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:34:16,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:34:16,137 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:34:16,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:34:16,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:34:16,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:34:16,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:34:16,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:34:16,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:34:16,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:34:16,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:34:16,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:34:16,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:34:16,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:34:16,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:34:16,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:34:16,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:34:16,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:34:16,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:34:16,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:34:16,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:34:16,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:34:16,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:34:16,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:34:16,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:34:16,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:34:16,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:34:16,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:34:16,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:34:16,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:34:16,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:34:16,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:34:16,555 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:34:16,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:34:16,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b5839b5b/9f46d3fbd95846548b1670b6c0541a29/FLAG0f418a4fe [2020-10-27 04:34:17,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:34:17,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:34:17,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b5839b5b/9f46d3fbd95846548b1670b6c0541a29/FLAG0f418a4fe [2020-10-27 04:34:17,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b5839b5b/9f46d3fbd95846548b1670b6c0541a29 [2020-10-27 04:34:17,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:34:17,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:34:17,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:34:17,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:34:17,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:34:17,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:17" (1/1) ... [2020-10-27 04:34:17,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9d10e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:17, skipping insertion in model container [2020-10-27 04:34:17,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:34:17" (1/1) ... [2020-10-27 04:34:17,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:34:17,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:34:18,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:34:18,025 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:34:18,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:34:18,133 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:34:18,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18 WrapperNode [2020-10-27 04:34:18,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:34:18,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:34:18,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:34:18,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:34:18,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... [2020-10-27 04:34:18,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:34:18,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:34:18,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:34:18,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:34:18,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:34:18,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:34:18,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:34:18,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:34:18,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:34:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:34:18,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:34:18,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:34:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:34:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:34:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:34:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:34:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:34:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:34:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:34:19,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:34:19,120 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:34:19,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:19 BoogieIcfgContainer [2020-10-27 04:34:19,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:34:19,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:34:19,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:34:19,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:34:19,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:34:17" (1/3) ... [2020-10-27 04:34:19,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a03c73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:19, skipping insertion in model container [2020-10-27 04:34:19,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:34:18" (2/3) ... [2020-10-27 04:34:19,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a03c73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:34:19, skipping insertion in model container [2020-10-27 04:34:19,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:34:19" (3/3) ... [2020-10-27 04:34:19,139 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:34:19,154 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:34:19,161 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:34:19,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:34:19,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:34:19,231 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:34:19,231 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:34:19,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:34:19,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:34:19,232 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:34:19,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:34:19,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:34:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-10-27 04:34:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 04:34:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:19,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:19,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash 370208598, now seen corresponding path program 1 times [2020-10-27 04:34:19,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:19,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665856098] [2020-10-27 04:34:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:34:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-27 04:34:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:34:20,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:34:20,425 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:34:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:20,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:20,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:34:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:20,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:20,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:34:20,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:20,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:34:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:20,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:34:20,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:20,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:34:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:20,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:20,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:20,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:34:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:20,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:34:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:20,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:34:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:20,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:20,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665856098] [2020-10-27 04:34:20,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:20,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:34:20,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060811793] [2020-10-27 04:34:20,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:34:20,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:34:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:34:20,726 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 7 states. [2020-10-27 04:34:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:21,804 INFO L93 Difference]: Finished difference Result 230 states and 338 transitions. [2020-10-27 04:34:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:34:21,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-27 04:34:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:21,819 INFO L225 Difference]: With dead ends: 230 [2020-10-27 04:34:21,819 INFO L226 Difference]: Without dead ends: 133 [2020-10-27 04:34:21,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:34:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-27 04:34:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2020-10-27 04:34:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 04:34:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 190 transitions. [2020-10-27 04:34:21,917 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 190 transitions. Word has length 61 [2020-10-27 04:34:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:21,918 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 190 transitions. [2020-10-27 04:34:21,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:34:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 190 transitions. [2020-10-27 04:34:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 04:34:21,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:21,922 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] [2020-10-27 04:34:21,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:34:21,922 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:21,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:21,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1996485996, now seen corresponding path program 1 times [2020-10-27 04:34:21,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:21,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309765238] [2020-10-27 04:34:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:21,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:22,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:34:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-27 04:34:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:34:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:34:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:34:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:22,899 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:22,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:22,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:22,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:22,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:22,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:22,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:22,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:22,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:34:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:22,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:34:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:34:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:23,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:23,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:34:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:34:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:34:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:34:23,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:23,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:34:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:23,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:23,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:23,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:23,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:23,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:34:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:23,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309765238] [2020-10-27 04:34:23,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:23,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:34:23,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743775737] [2020-10-27 04:34:23,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:34:23,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:23,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:34:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:34:23,233 INFO L87 Difference]: Start difference. First operand 128 states and 190 transitions. Second operand 13 states. [2020-10-27 04:34:23,574 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:23,822 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:34:24,204 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 04:34:24,493 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:34:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:26,185 INFO L93 Difference]: Finished difference Result 225 states and 326 transitions. [2020-10-27 04:34:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:34:26,186 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-27 04:34:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:26,193 INFO L225 Difference]: With dead ends: 225 [2020-10-27 04:34:26,193 INFO L226 Difference]: Without dead ends: 133 [2020-10-27 04:34:26,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-27 04:34:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2020-10-27 04:34:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 04:34:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2020-10-27 04:34:26,243 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 61 [2020-10-27 04:34:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:26,244 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2020-10-27 04:34:26,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:34:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2020-10-27 04:34:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 04:34:26,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:26,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:26,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:34:26,253 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:26,254 INFO L82 PathProgramCache]: Analyzing trace with hash 312985794, now seen corresponding path program 1 times [2020-10-27 04:34:26,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:26,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388209995] [2020-10-27 04:34:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:34:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:34:31,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:34:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:34:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:34:31,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:31,574 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:31,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:31,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:31,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:31,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:34:31,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:34:31,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:34:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:31,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:34:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:31,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:34:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:31,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:34:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:34:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:31,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:34:31,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:34:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:31,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:31,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:34:31,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:34:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:34:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:34:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:32,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388209995] [2020-10-27 04:34:32,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:32,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:34:32,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696872236] [2020-10-27 04:34:32,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:34:32,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:34:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:34:32,027 INFO L87 Difference]: Start difference. First operand 128 states and 166 transitions. Second operand 16 states. [2020-10-27 04:34:32,517 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2020-10-27 04:34:32,770 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:33,010 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:33,259 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:34:33,534 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 04:34:33,852 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 04:34:34,308 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 04:34:35,094 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-27 04:34:36,397 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:34:36,646 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:34:36,877 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 04:34:37,134 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:34:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:42,129 INFO L93 Difference]: Finished difference Result 975 states and 1380 transitions. [2020-10-27 04:34:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-27 04:34:42,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-27 04:34:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:42,146 INFO L225 Difference]: With dead ends: 975 [2020-10-27 04:34:42,146 INFO L226 Difference]: Without dead ends: 889 [2020-10-27 04:34:42,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1178, Invalid=4674, Unknown=0, NotChecked=0, Total=5852 [2020-10-27 04:34:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-10-27 04:34:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 820. [2020-10-27 04:34:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-27 04:34:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1184 transitions. [2020-10-27 04:34:42,270 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1184 transitions. Word has length 84 [2020-10-27 04:34:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:42,271 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1184 transitions. [2020-10-27 04:34:42,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:34:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1184 transitions. [2020-10-27 04:34:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:34:42,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:42,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:42,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:34:42,277 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash -111367256, now seen corresponding path program 1 times [2020-10-27 04:34:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:42,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29445420] [2020-10-27 04:34:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:34:47,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:34:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:34:47,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:34:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:34:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:34:47,564 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:34:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:34:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:34:47,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:34:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:47,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:47,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:47,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:34:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:47,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:34:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:47,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:34:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:47,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:34:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:47,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:47,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29445420] [2020-10-27 04:34:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:47,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794610548] [2020-10-27 04:34:47,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:47,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:47,868 INFO L87 Difference]: Start difference. First operand 820 states and 1184 transitions. Second operand 10 states. [2020-10-27 04:34:48,094 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:48,722 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-27 04:34:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:50,165 INFO L93 Difference]: Finished difference Result 2340 states and 3381 transitions. [2020-10-27 04:34:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:50,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-27 04:34:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:50,188 INFO L225 Difference]: With dead ends: 2340 [2020-10-27 04:34:50,188 INFO L226 Difference]: Without dead ends: 1562 [2020-10-27 04:34:50,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-10-27 04:34:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1478. [2020-10-27 04:34:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-27 04:34:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2129 transitions. [2020-10-27 04:34:50,359 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2129 transitions. Word has length 85 [2020-10-27 04:34:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:50,359 INFO L481 AbstractCegarLoop]: Abstraction has 1478 states and 2129 transitions. [2020-10-27 04:34:50,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2129 transitions. [2020-10-27 04:34:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 04:34:50,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:50,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:50,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:34:50,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:50,363 INFO L82 PathProgramCache]: Analyzing trace with hash -262110187, now seen corresponding path program 1 times [2020-10-27 04:34:50,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:50,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233506790] [2020-10-27 04:34:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:34:55,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:34:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:34:55,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:55,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:34:55,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:34:55,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,626 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:34:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:34:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:34:55,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:34:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:34:55,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:34:55,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:55,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:34:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:34:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:34:55,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:34:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:34:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:55,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:34:55,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:34:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:34:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:34:55,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:34:55,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:34:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:34:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:34:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:34:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:55,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:34:55,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:34:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:34:55,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:34:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:55,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:34:55,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:34:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:55,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:34:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:34:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:34:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:34:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:34:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:34:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:34:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:34:55,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233506790] [2020-10-27 04:34:55,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:34:55,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:34:55,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828076305] [2020-10-27 04:34:55,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:34:55,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:34:55,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:34:55,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:34:55,961 INFO L87 Difference]: Start difference. First operand 1478 states and 2129 transitions. Second operand 10 states. [2020-10-27 04:34:56,189 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:34:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:34:58,118 INFO L93 Difference]: Finished difference Result 4260 states and 6111 transitions. [2020-10-27 04:34:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:34:58,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-27 04:34:58,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:34:58,140 INFO L225 Difference]: With dead ends: 4260 [2020-10-27 04:34:58,141 INFO L226 Difference]: Without dead ends: 2824 [2020-10-27 04:34:58,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:34:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2020-10-27 04:34:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2677. [2020-10-27 04:34:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2677 states. [2020-10-27 04:34:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3824 transitions. [2020-10-27 04:34:58,376 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3824 transitions. Word has length 86 [2020-10-27 04:34:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:34:58,376 INFO L481 AbstractCegarLoop]: Abstraction has 2677 states and 3824 transitions. [2020-10-27 04:34:58,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:34:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3824 transitions. [2020-10-27 04:34:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:34:58,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:34:58,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:34:58,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:34:58,380 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:34:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:34:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 88013476, now seen corresponding path program 1 times [2020-10-27 04:34:58,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:34:58,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50668658] [2020-10-27 04:34:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:34:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:34:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:34:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:34:59,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:34:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:34:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-27 04:34:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:34:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:34:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:34:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:34:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,104 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:00,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:00,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:00,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:35:00,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:35:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:35:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:00,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:00,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:35:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:00,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:00,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:00,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:35:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:00,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:35:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:35:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:00,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:35:00,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:00,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:35:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:00,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50668658] [2020-10-27 04:35:00,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:00,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:35:00,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671539144] [2020-10-27 04:35:00,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:35:00,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:35:00,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:35:00,407 INFO L87 Difference]: Start difference. First operand 2677 states and 3824 transitions. Second operand 10 states. [2020-10-27 04:35:00,636 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:02,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:02,933 INFO L93 Difference]: Finished difference Result 7719 states and 10960 transitions. [2020-10-27 04:35:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:35:02,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 04:35:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:02,966 INFO L225 Difference]: With dead ends: 7719 [2020-10-27 04:35:02,966 INFO L226 Difference]: Without dead ends: 5084 [2020-10-27 04:35:02,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:35:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-27 04:35:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4829. [2020-10-27 04:35:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4829 states. [2020-10-27 04:35:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 6816 transitions. [2020-10-27 04:35:03,377 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 6816 transitions. Word has length 87 [2020-10-27 04:35:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:03,377 INFO L481 AbstractCegarLoop]: Abstraction has 4829 states and 6816 transitions. [2020-10-27 04:35:03,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:35:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 6816 transitions. [2020-10-27 04:35:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:35:03,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:03,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:03,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:35:03,385 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -498149657, now seen corresponding path program 1 times [2020-10-27 04:35:03,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:03,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026930872] [2020-10-27 04:35:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:35:04,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:35:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-27 04:35:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:35:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:35:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:35:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:04,796 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:35:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:04,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:35:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:35:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:35:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:04,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:04,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:35:04,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:04,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:35:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:35:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:35:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:35:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:35:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:35:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:05,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:05,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:05,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:05,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:05,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026930872] [2020-10-27 04:35:05,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:05,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:35:05,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25919984] [2020-10-27 04:35:05,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:35:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:35:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:35:05,191 INFO L87 Difference]: Start difference. First operand 4829 states and 6816 transitions. Second operand 15 states. [2020-10-27 04:35:05,485 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:05,758 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:06,411 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:35:06,978 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:07,247 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 04:35:07,499 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 04:35:08,362 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:08,664 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:08,940 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:09,185 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 04:35:09,423 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:09,868 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:10,097 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:11,338 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:11,582 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:11,837 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:12,084 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:12,327 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 04:35:12,566 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 04:35:12,926 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:13,162 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:13,423 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:13,666 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:13,900 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 04:35:14,150 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 04:35:14,958 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:35:15,199 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:35:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:29,383 INFO L93 Difference]: Finished difference Result 59428 states and 87056 transitions. [2020-10-27 04:35:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 04:35:29,383 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-27 04:35:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:29,715 INFO L225 Difference]: With dead ends: 59428 [2020-10-27 04:35:29,715 INFO L226 Difference]: Without dead ends: 54641 [2020-10-27 04:35:29,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7329 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 04:35:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54641 states. [2020-10-27 04:35:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54641 to 53114. [2020-10-27 04:35:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53114 states. [2020-10-27 04:35:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53114 states to 53114 states and 71305 transitions. [2020-10-27 04:35:34,815 INFO L78 Accepts]: Start accepts. Automaton has 53114 states and 71305 transitions. Word has length 88 [2020-10-27 04:35:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:34,817 INFO L481 AbstractCegarLoop]: Abstraction has 53114 states and 71305 transitions. [2020-10-27 04:35:34,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:35:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 53114 states and 71305 transitions. [2020-10-27 04:35:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:35:34,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:34,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:34,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:35:34,821 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1804214095, now seen corresponding path program 1 times [2020-10-27 04:35:34,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:34,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296661209] [2020-10-27 04:35:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 04:35:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:35:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,465 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:35,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:35:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:35:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:35:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:35:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:35,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:35:35,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:35:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:35:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:35,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:35:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296661209] [2020-10-27 04:35:35,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:35,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:35:35,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410739016] [2020-10-27 04:35:35,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:35:35,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:35:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:35:35,718 INFO L87 Difference]: Start difference. First operand 53114 states and 71305 transitions. Second operand 13 states. [2020-10-27 04:35:37,330 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 04:35:37,546 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 04:35:37,809 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:38,067 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 04:35:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:41,949 INFO L93 Difference]: Finished difference Result 64210 states and 88672 transitions. [2020-10-27 04:35:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:35:41,949 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-10-27 04:35:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:42,249 INFO L225 Difference]: With dead ends: 64210 [2020-10-27 04:35:42,249 INFO L226 Difference]: Without dead ends: 64207 [2020-10-27 04:35:42,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:35:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64207 states. [2020-10-27 04:35:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64207 to 57722. [2020-10-27 04:35:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57722 states. [2020-10-27 04:35:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57722 states to 57722 states and 75913 transitions. [2020-10-27 04:35:46,983 INFO L78 Accepts]: Start accepts. Automaton has 57722 states and 75913 transitions. Word has length 89 [2020-10-27 04:35:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:46,983 INFO L481 AbstractCegarLoop]: Abstraction has 57722 states and 75913 transitions. [2020-10-27 04:35:46,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:35:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 57722 states and 75913 transitions. [2020-10-27 04:35:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:35:46,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:46,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:35:46,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:35:46,987 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash 606975971, now seen corresponding path program 1 times [2020-10-27 04:35:46,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:46,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724556926] [2020-10-27 04:35:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:35:47,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 04:35:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,458 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:35:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:47,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:47,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:47,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:35:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:47,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:35:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:35:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:35:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:47,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,818 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-10-27 04:35:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:35:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:47,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:47,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:35:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:47,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:47,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:35:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:35:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:35:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:35:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:35:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:35:47,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:35:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:35:48,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724556926] [2020-10-27 04:35:48,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:48,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:35:48,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334476233] [2020-10-27 04:35:48,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:35:48,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:48,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:35:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:35:48,023 INFO L87 Difference]: Start difference. First operand 57722 states and 75913 transitions. Second operand 10 states. [2020-10-27 04:35:48,308 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:35:50,047 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:35:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:59,857 INFO L93 Difference]: Finished difference Result 202571 states and 271367 transitions. [2020-10-27 04:35:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:35:59,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-27 04:35:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:00,860 INFO L225 Difference]: With dead ends: 202571 [2020-10-27 04:36:00,861 INFO L226 Difference]: Without dead ends: 144901 [2020-10-27 04:36:01,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:36:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144901 states. [2020-10-27 04:36:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144901 to 139958. [2020-10-27 04:36:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139958 states. [2020-10-27 04:36:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139958 states to 139958 states and 185592 transitions. [2020-10-27 04:36:12,117 INFO L78 Accepts]: Start accepts. Automaton has 139958 states and 185592 transitions. Word has length 90 [2020-10-27 04:36:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:12,122 INFO L481 AbstractCegarLoop]: Abstraction has 139958 states and 185592 transitions. [2020-10-27 04:36:12,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:36:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 139958 states and 185592 transitions. [2020-10-27 04:36:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:36:12,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:12,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:36:12,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:36:12,128 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:12,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1735571222, now seen corresponding path program 1 times [2020-10-27 04:36:12,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:12,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3627001] [2020-10-27 04:36:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:36:13,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 04:36:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,462 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:36:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:36:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:36:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:36:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:36:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:36:13,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:36:13,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:36:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:13,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:36:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:36:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:36:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:36:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:36:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:36:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:13,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:13,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:36:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:36:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:13,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:13,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:13,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:13,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:36:13,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:13,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:36:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:36:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:36:13,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3627001] [2020-10-27 04:36:13,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:13,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:36:13,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168854164] [2020-10-27 04:36:13,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:36:13,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:36:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:36:13,826 INFO L87 Difference]: Start difference. First operand 139958 states and 185592 transitions. Second operand 12 states. [2020-10-27 04:36:14,164 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:36:14,879 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:36:18,060 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 04:36:23,105 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-27 04:36:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:30,528 INFO L93 Difference]: Finished difference Result 308759 states and 414601 transitions. [2020-10-27 04:36:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 04:36:30,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-27 04:36:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:31,713 INFO L225 Difference]: With dead ends: 308759 [2020-10-27 04:36:31,713 INFO L226 Difference]: Without dead ends: 203996 [2020-10-27 04:36:31,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:36:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203996 states. [2020-10-27 04:36:45,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203996 to 199142. [2020-10-27 04:36:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199142 states. [2020-10-27 04:36:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199142 states to 199142 states and 265508 transitions. [2020-10-27 04:36:46,043 INFO L78 Accepts]: Start accepts. Automaton has 199142 states and 265508 transitions. Word has length 91 [2020-10-27 04:36:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:46,043 INFO L481 AbstractCegarLoop]: Abstraction has 199142 states and 265508 transitions. [2020-10-27 04:36:46,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:36:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 199142 states and 265508 transitions. [2020-10-27 04:36:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:36:46,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:46,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:36:46,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:36:46,056 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1132074437, now seen corresponding path program 1 times [2020-10-27 04:36:46,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:46,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483935993] [2020-10-27 04:36:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:36:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:36:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,346 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:36:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:51,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:36:51,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:36:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:36:51,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:36:51,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:36:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:36:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:36:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:36:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:36:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:36:51,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:36:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:36:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:36:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:51,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:36:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:36:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:36:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:51,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:36:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:51,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:51,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:36:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:36:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:36:51,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483935993] [2020-10-27 04:36:51,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:51,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:36:51,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831763998] [2020-10-27 04:36:51,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:36:51,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:51,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:36:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:36:51,694 INFO L87 Difference]: Start difference. First operand 199142 states and 265508 transitions. Second operand 14 states. [2020-10-27 04:36:52,163 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 144 [2020-10-27 04:36:52,419 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:36:53,139 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 146 [2020-10-27 04:36:53,305 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 04:36:53,450 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-27 04:36:53,680 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-27 04:36:53,891 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-27 04:36:54,142 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-27 04:36:54,364 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-27 04:36:54,798 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 04:36:55,012 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 04:36:55,381 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 04:36:55,811 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-27 04:37:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:37:12,207 INFO L93 Difference]: Finished difference Result 295498 states and 394308 transitions. [2020-10-27 04:37:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:37:12,208 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-27 04:37:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:37:13,710 INFO L225 Difference]: With dead ends: 295498 [2020-10-27 04:37:13,711 INFO L226 Difference]: Without dead ends: 252847 [2020-10-27 04:37:13,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:37:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252847 states. [2020-10-27 04:37:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252847 to 208128. [2020-10-27 04:37:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208128 states. [2020-10-27 04:37:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208128 states to 208128 states and 278231 transitions. [2020-10-27 04:37:31,815 INFO L78 Accepts]: Start accepts. Automaton has 208128 states and 278231 transitions. Word has length 92 [2020-10-27 04:37:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:37:31,815 INFO L481 AbstractCegarLoop]: Abstraction has 208128 states and 278231 transitions. [2020-10-27 04:37:31,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:37:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 208128 states and 278231 transitions. [2020-10-27 04:37:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 04:37:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:37:31,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 04:37:31,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:37:31,897 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:37:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:37:31,898 INFO L82 PathProgramCache]: Analyzing trace with hash 524923027, now seen corresponding path program 1 times [2020-10-27 04:37:31,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:37:31,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803432039] [2020-10-27 04:37:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:37:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 04:37:36,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 04:37:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,296 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 04:37:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:37:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:37:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:37:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:37:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:37:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 04:37:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:37:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:37:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:37:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:37:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:37:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:37:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:37:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:37:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:37:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:37:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:37:37,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:37:37,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:37:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:37:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:37:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:37:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:37:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:37:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 04:37:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:37:37,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 04:37:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:37:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:37:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:37:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:37:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:37:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 04:37:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:37:37,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:37:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 04:37:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:37:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:37:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:37:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:37:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:37:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:37:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 04:37:37,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803432039] [2020-10-27 04:37:37,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:37:37,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:37:37,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926598914] [2020-10-27 04:37:37,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:37:37,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:37:37,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:37:37,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:37:37,833 INFO L87 Difference]: Start difference. First operand 208128 states and 278231 transitions. Second operand 16 states. [2020-10-27 04:37:38,344 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 144 [2020-10-27 04:37:38,620 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 04:37:39,499 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 148 [2020-10-27 04:37:39,674 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-27 04:37:39,962 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 04:37:40,219 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 04:37:40,359 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 04:37:40,896 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 150 [2020-10-27 04:37:41,337 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 146