/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_floodmax.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:21:51,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:21:51,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:21:51,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:21:51,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:21:51,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:21:51,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:21:51,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:21:51,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:21:51,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:21:51,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:21:51,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:21:51,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:21:51,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:21:51,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:21:51,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:21:51,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:21:51,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:21:51,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:21:51,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:21:51,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:21:51,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:21:51,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:21:51,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:21:51,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:21:51,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:21:51,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:21:51,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:21:51,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:21:51,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:21:51,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:21:51,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:21:51,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:21:51,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:21:51,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:21:51,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:21:51,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:21:51,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:21:51,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:21:51,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:21:51,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:21:51,227 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 04:21:51,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:21:51,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:21:51,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:21:51,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:21:51,283 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:21:51,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:21:51,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:21:51,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:21:51,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:21:51,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:21:51,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:21:51,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:21:51,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:21:51,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:21:51,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:21:51,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:21:51,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:21:51,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:21:51,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:21:51,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:21:51,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:21:51,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:21:51,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:21:51,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:21:51,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:21:51,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:21:51,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:21:51,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:21:51,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:21:51,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:21:51,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:21:51,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:21:51,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:21:51,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:21:51,699 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:21:51,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:21:51,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2cb923a/475bf7fee66e4c10910093e1a048448e/FLAG8b042868d [2020-10-27 04:21:52,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:21:52,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:21:52,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2cb923a/475bf7fee66e4c10910093e1a048448e/FLAG8b042868d [2020-10-27 04:21:52,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2cb923a/475bf7fee66e4c10910093e1a048448e [2020-10-27 04:21:52,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:21:52,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:21:52,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:21:52,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:21:52,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:21:52,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:52" (1/1) ... [2020-10-27 04:21:52,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f45d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:52, skipping insertion in model container [2020-10-27 04:21:52,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:52" (1/1) ... [2020-10-27 04:21:52,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:21:52,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:21:53,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:21:53,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:21:53,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:21:53,594 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:21:53,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53 WrapperNode [2020-10-27 04:21:53,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:21:53,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:21:53,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:21:53,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:21:53,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (1/1) ... [2020-10-27 04:21:53,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:21:53,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:21:53,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:21:53,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:21:53,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (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 04:21:53,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:21:53,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:21:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:21:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:21:53,920 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:21:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:21:53,921 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:21:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:21:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:21:53,922 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:21:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:21:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:21:53,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:21:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:21:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:21:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:21:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:21:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:21:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:21:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:21:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:21:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:21:56,503 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:21:56,503 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:21:56,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:56 BoogieIcfgContainer [2020-10-27 04:21:56,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:21:56,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:21:56,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:21:56,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:21:56,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:21:52" (1/3) ... [2020-10-27 04:21:56,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac456fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:56, skipping insertion in model container [2020-10-27 04:21:56,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:53" (2/3) ... [2020-10-27 04:21:56,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac456fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:56, skipping insertion in model container [2020-10-27 04:21:56,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:56" (3/3) ... [2020-10-27 04:21:56,535 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-27 04:21:56,547 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:21:56,554 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:21:56,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:21:56,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:21:56,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:21:56,603 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:21:56,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:21:56,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:21:56,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:21:56,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:21:56,604 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:21:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2020-10-27 04:21:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 04:21:56,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:56,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:56,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash -966148239, now seen corresponding path program 1 times [2020-10-27 04:21:56,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461618651] [2020-10-27 04:21:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:58,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:58,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 04:21:58,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-27 04:21:58,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 04:21:58,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:21:59,649 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:21:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:59,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:59,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:59,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 04:21:59,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:59,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:59,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:59,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:21:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 04:21:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:22:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:00,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:22:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:22:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:22:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:22:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:22:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:00,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 04:22:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:22:00,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:00,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 04:22:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:22:00,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:00,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 04:22:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:22:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 04:22:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:22:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:00,585 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 04:22:00,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461618651] [2020-10-27 04:22:00,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:00,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:22:00,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142684820] [2020-10-27 04:22:00,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:22:00,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:22:00,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:22:00,612 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 8 states. [2020-10-27 04:22:03,733 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:04,381 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:05,081 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:05,621 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:06,186 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:06,955 INFO L93 Difference]: Finished difference Result 976 states and 1721 transitions. [2020-10-27 04:22:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:22:06,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-27 04:22:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:06,986 INFO L225 Difference]: With dead ends: 976 [2020-10-27 04:22:06,986 INFO L226 Difference]: Without dead ends: 784 [2020-10-27 04:22:06,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:22:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-27 04:22:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 734. [2020-10-27 04:22:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-27 04:22:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1328 transitions. [2020-10-27 04:22:07,277 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1328 transitions. Word has length 183 [2020-10-27 04:22:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:07,280 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1328 transitions. [2020-10-27 04:22:07,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:22:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1328 transitions. [2020-10-27 04:22:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 04:22:07,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:07,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:22:07,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:22:07,294 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:07,295 INFO L82 PathProgramCache]: Analyzing trace with hash 973013807, now seen corresponding path program 1 times [2020-10-27 04:22:07,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:07,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009612315] [2020-10-27 04:22:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 04:22:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3314 [2020-10-27 04:22:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:22:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:22:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:22:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:11,962 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:22:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:22:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:22:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:22:12,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:22:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:12,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:12,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:22:12,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:22:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:22:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:12,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:22:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:22:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 04:22:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 04:22:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:13,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 04:22:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:22:13,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-27 04:22:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:13,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 04:22:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:13,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:22:13,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:13,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:13,538 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 04:22:13,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009612315] [2020-10-27 04:22:13,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:13,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:22:13,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402702339] [2020-10-27 04:22:13,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:22:13,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:13,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:22:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:22:13,545 INFO L87 Difference]: Start difference. First operand 734 states and 1328 transitions. Second operand 14 states. [2020-10-27 04:22:23,523 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-27 04:22:24,610 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2020-10-27 04:22:25,887 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-27 04:22:26,992 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:22:28,342 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:29,110 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:30,025 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:30,851 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:31,763 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:33,373 INFO L93 Difference]: Finished difference Result 977 states and 1723 transitions. [2020-10-27 04:22:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:22:33,374 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-27 04:22:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:33,388 INFO L225 Difference]: With dead ends: 977 [2020-10-27 04:22:33,388 INFO L226 Difference]: Without dead ends: 795 [2020-10-27 04:22:33,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:22:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-27 04:22:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 734. [2020-10-27 04:22:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-27 04:22:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1268 transitions. [2020-10-27 04:22:33,568 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1268 transitions. Word has length 183 [2020-10-27 04:22:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:33,569 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1268 transitions. [2020-10-27 04:22:33,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:22:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1268 transitions. [2020-10-27 04:22:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 04:22:33,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:33,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:33,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:22:33,584 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:33,585 INFO L82 PathProgramCache]: Analyzing trace with hash -929784361, now seen corresponding path program 1 times [2020-10-27 04:22:33,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:33,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840985905] [2020-10-27 04:22:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:38,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:38,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 04:22:38,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:22:38,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 04:22:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:22:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:22:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:22:39,932 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:22:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:22:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:39,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:22:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:22:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 04:22:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:22:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:22:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:40,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:22:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:22:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 04:22:40,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:22:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:22:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 04:22:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:22:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 04:22:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:40,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:22:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:22:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:40,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:40,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:40,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:40,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:40,930 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 04:22:40,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840985905] [2020-10-27 04:22:40,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:40,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:22:40,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501677681] [2020-10-27 04:22:40,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:22:40,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:22:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:22:40,933 INFO L87 Difference]: Start difference. First operand 734 states and 1268 transitions. Second operand 11 states. [2020-10-27 04:22:42,029 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-27 04:22:48,849 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:49,266 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:22:49,832 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:22:50,114 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:50,975 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:22:51,273 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:52,202 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:22:52,509 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:53,435 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:22:53,741 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:22:55,831 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-27 04:22:56,555 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:22:56,880 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:22:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:56,972 INFO L93 Difference]: Finished difference Result 1185 states and 2002 transitions. [2020-10-27 04:22:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:22:56,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-27 04:22:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:56,981 INFO L225 Difference]: With dead ends: 1185 [2020-10-27 04:22:56,981 INFO L226 Difference]: Without dead ends: 1009 [2020-10-27 04:22:56,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:22:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-27 04:22:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 896. [2020-10-27 04:22:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-27 04:22:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1529 transitions. [2020-10-27 04:22:57,171 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1529 transitions. Word has length 242 [2020-10-27 04:22:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:57,172 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1529 transitions. [2020-10-27 04:22:57,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:22:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1529 transitions. [2020-10-27 04:22:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:22:57,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:57,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:57,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:22:57,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:57,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1954321531, now seen corresponding path program 1 times [2020-10-27 04:22:57,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:57,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957872153] [2020-10-27 04:22:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-27 04:23:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:03,551 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:23:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:23:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:03,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:23:03,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:23:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:23:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:23:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 04:23:04,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:23:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:23:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:23:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:23:04,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:23:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:23:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 04:23:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:23:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:04,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 04:23:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:04,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:23:04,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:23:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 04:23:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:23:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 04:23:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:04,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:04,966 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 04:23:04,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957872153] [2020-10-27 04:23:04,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:23:04,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:23:04,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144326869] [2020-10-27 04:23:04,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:23:04,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:23:04,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:23:04,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:23:04,970 INFO L87 Difference]: Start difference. First operand 896 states and 1529 transitions. Second operand 11 states. [2020-10-27 04:23:06,125 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:23:07,264 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-27 04:23:08,550 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 04:23:12,113 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-27 04:23:30,484 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-27 04:23:31,007 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:23:31,363 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:32,063 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:23:32,643 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:23:33,191 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:23:33,470 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:34,343 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:23:35,004 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:23:35,282 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:36,036 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:23:36,710 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:23:37,004 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:37,770 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:23:38,410 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:23:38,701 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:23:40,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:23:40,449 INFO L93 Difference]: Finished difference Result 3518 states and 5999 transitions. [2020-10-27 04:23:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:23:40,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-27 04:23:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:23:40,471 INFO L225 Difference]: With dead ends: 3518 [2020-10-27 04:23:40,471 INFO L226 Difference]: Without dead ends: 2689 [2020-10-27 04:23:40,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:23:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-10-27 04:23:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2434. [2020-10-27 04:23:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2434 states. [2020-10-27 04:23:41,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 4151 transitions. [2020-10-27 04:23:41,001 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 4151 transitions. Word has length 246 [2020-10-27 04:23:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:23:41,002 INFO L481 AbstractCegarLoop]: Abstraction has 2434 states and 4151 transitions. [2020-10-27 04:23:41,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:23:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 4151 transitions. [2020-10-27 04:23:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 04:23:41,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:23:41,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:41,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:23:41,012 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:23:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:23:41,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1282874302, now seen corresponding path program 1 times [2020-10-27 04:23:41,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:23:41,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235214523] [2020-10-27 04:23:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:23:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:42,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:46,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:23:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 04:23:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:47,383 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:23:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:23:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:47,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:47,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:23:47,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:23:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:23:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:47,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:23:47,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:47,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-27 04:23:47,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:23:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:23:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:23:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:23:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:23:48,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:23:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:23:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:23:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:23:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 04:23:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:23:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:23:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 04:23:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 04:23:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:23:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 04:23:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:23:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:23:48,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235214523] [2020-10-27 04:23:48,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:23:48,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:23:48,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317779016] [2020-10-27 04:23:48,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:23:48,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:23:48,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:23:48,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:23:48,845 INFO L87 Difference]: Start difference. First operand 2434 states and 4151 transitions. Second operand 11 states. [2020-10-27 04:23:49,974 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:23:51,103 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-27 04:23:52,807 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 04:23:54,963 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-27 04:24:15,344 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-27 04:24:15,924 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:24:16,346 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:16,925 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:24:18,058 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:24:18,453 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:24:18,945 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:20,113 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:24:20,558 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:24:21,072 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:22,132 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:24:22,608 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:24:23,152 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:24,071 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:24:24,501 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:24:25,029 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:24:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:24:27,288 INFO L93 Difference]: Finished difference Result 9413 states and 16023 transitions. [2020-10-27 04:24:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:24:27,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-27 04:24:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:24:27,326 INFO L225 Difference]: With dead ends: 9413 [2020-10-27 04:24:27,326 INFO L226 Difference]: Without dead ends: 7126 [2020-10-27 04:24:27,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:24:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2020-10-27 04:24:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6598. [2020-10-27 04:24:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6598 states. [2020-10-27 04:24:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6598 states to 6598 states and 11210 transitions. [2020-10-27 04:24:28,787 INFO L78 Accepts]: Start accepts. Automaton has 6598 states and 11210 transitions. Word has length 246 [2020-10-27 04:24:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:24:28,788 INFO L481 AbstractCegarLoop]: Abstraction has 6598 states and 11210 transitions. [2020-10-27 04:24:28,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:24:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6598 states and 11210 transitions. [2020-10-27 04:24:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 04:24:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:24:28,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:28,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:24:28,809 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:24:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:24:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash 440350761, now seen corresponding path program 1 times [2020-10-27 04:24:28,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:24:28,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208633558] [2020-10-27 04:24:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:24:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:34,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 04:24:34,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:24:34,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 04:24:34,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:24:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:24:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-27 04:24:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:35,222 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:24:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:24:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:24:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:24:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:35,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:35,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:24:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-27 04:24:35,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:24:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:35,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 04:24:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:24:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:24:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:24:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:24:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:24:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:24:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:24:36,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:24:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 04:24:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:24:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:24:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:36,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:24:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 04:24:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-27 04:24:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:24:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:24:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:24:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:24:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:24:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:24:36,752 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 04:24:36,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208633558] [2020-10-27 04:24:36,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:24:36,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:24:36,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860935592] [2020-10-27 04:24:36,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:24:36,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:24:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:24:36,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:24:36,755 INFO L87 Difference]: Start difference. First operand 6598 states and 11210 transitions. Second operand 16 states. [2020-10-27 04:24:39,017 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 392 DAG size of output: 391 [2020-10-27 04:24:40,089 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:24:52,482 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 390 [2020-10-27 04:24:55,311 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 394 DAG size of output: 393 [2020-10-27 04:24:56,009 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2020-10-27 04:24:56,783 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-10-27 04:24:57,483 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2020-10-27 04:24:58,191 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2020-10-27 04:24:58,840 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:24:59,939 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:25:01,066 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:25:02,277 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:25:03,434 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 179 [2020-10-27 04:25:05,262 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:25:06,224 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:25:07,171 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:25:08,061 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:25:08,952 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 04:25:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:25:09,408 INFO L93 Difference]: Finished difference Result 9651 states and 16214 transitions. [2020-10-27 04:25:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:25:09,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 247 [2020-10-27 04:25:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:25:09,452 INFO L225 Difference]: With dead ends: 9651 [2020-10-27 04:25:09,453 INFO L226 Difference]: Without dead ends: 9138 [2020-10-27 04:25:09,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:25:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2020-10-27 04:25:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 6769. [2020-10-27 04:25:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-10-27 04:25:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 11481 transitions. [2020-10-27 04:25:10,819 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 11481 transitions. Word has length 247 [2020-10-27 04:25:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:25:10,820 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 11481 transitions. [2020-10-27 04:25:10,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:25:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 11481 transitions. [2020-10-27 04:25:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 04:25:10,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:25:10,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:10,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:25:10,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:25:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:25:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash -457042517, now seen corresponding path program 1 times [2020-10-27 04:25:10,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:25:10,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839308679] [2020-10-27 04:25:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:25:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:25:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 04:25:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:17,191 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-27 04:25:17,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:25:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:17,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:25:17,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:17,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:25:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:25:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:17,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:25:17,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:25:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:17,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 04:25:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:25:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:25:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-27 04:25:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:25:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:25:17,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:25:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 04:25:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:25:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:18,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:25:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 04:25:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-27 04:25:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:25:18,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:25:18,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:25:18,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:25:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:25:18,387 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 04:25:18,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839308679] [2020-10-27 04:25:18,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:25:18,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:25:18,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313945063] [2020-10-27 04:25:18,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:25:18,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:25:18,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:25:18,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:25:18,390 INFO L87 Difference]: Start difference. First operand 6769 states and 11481 transitions. Second operand 11 states. [2020-10-27 04:25:19,692 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-27 04:25:20,931 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-27 04:25:22,690 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 04:25:25,129 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 398 DAG size of output: 396