/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:01:13,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:01:13,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:01:13,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:01:13,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:01:13,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:01:13,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:01:13,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:01:13,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:01:13,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:01:13,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:01:13,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:01:13,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:01:13,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:01:13,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:01:13,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:01:13,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:01:13,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:01:13,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:01:13,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:01:13,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:01:13,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:01:13,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:01:13,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:01:13,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:01:13,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:01:13,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:01:13,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:01:13,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:01:13,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:01:13,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:01:13,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:01:13,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:01:13,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:01:13,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:01:13,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:01:13,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:01:13,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:01:13,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:01:13,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:01:13,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:01:13,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:01:13,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:01:13,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:01:13,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:01:13,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:01:13,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:01:13,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:01:13,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:01:13,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:01:13,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:01:13,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:01:13,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:01:13,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:01:13,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:01:13,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:01:13,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:01:13,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:01:13,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:01:13,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:01:13,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:01:13,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:01:13,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:01:13,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:01:13,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:01:13,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:01:13,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:01:13,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:01:13,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:01:13,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:01:13,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:01:13,650 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:01:13,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 18:01:13,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/922ded132/15d3a51eec2e4c87869887ec59bbd832/FLAGf117cb6aa [2020-10-28 18:01:14,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:01:14,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 18:01:14,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/922ded132/15d3a51eec2e4c87869887ec59bbd832/FLAGf117cb6aa [2020-10-28 18:01:14,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/922ded132/15d3a51eec2e4c87869887ec59bbd832 [2020-10-28 18:01:14,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:01:14,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:01:14,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:01:14,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:01:14,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:01:14,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:01:14" (1/1) ... [2020-10-28 18:01:14,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671a465f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:14, skipping insertion in model container [2020-10-28 18:01:14,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:01:14" (1/1) ... [2020-10-28 18:01:14,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:01:14,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:01:15,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:01:15,326 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:01:15,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:01:15,499 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:01:15,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15 WrapperNode [2020-10-28 18:01:15,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:01:15,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:01:15,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:01:15,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:01:15,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... [2020-10-28 18:01:15,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:01:15,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:01:15,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:01:15,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:01:15,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:01:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:01:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:01:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:01:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 18:01:15,774 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 18:01:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 18:01:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:01:15,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 18:01:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:01:15,776 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:01:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:01:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:01:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:01:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:01:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:01:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:01:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:01:18,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:01:18,224 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 18:01:18,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:01:18 BoogieIcfgContainer [2020-10-28 18:01:18,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:01:18,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:01:18,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:01:18,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:01:18,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:01:14" (1/3) ... [2020-10-28 18:01:18,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96e6bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:01:18, skipping insertion in model container [2020-10-28 18:01:18,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:01:15" (2/3) ... [2020-10-28 18:01:18,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96e6bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:01:18, skipping insertion in model container [2020-10-28 18:01:18,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:01:18" (3/3) ... [2020-10-28 18:01:18,236 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 18:01:18,248 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:01:18,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:01:18,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:01:18,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:01:18,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:01:18,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:01:18,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:01:18,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:01:18,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:01:18,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:01:18,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:01:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-28 18:01:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:01:18,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:18,365 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] [2020-10-28 18:01:18,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-28 18:01:18,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:18,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447776986] [2020-10-28 18:01:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:01:19,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-28 18:01:19,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 18:01:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:01:21,292 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:01:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 18:01:21,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:01:21,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:01:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:21,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:01:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 18:01:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:01:21,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:01:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:01:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:01:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:01:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:01:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:01:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:01:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:22,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:22,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:22,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:22,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:01:22,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:22,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:01:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:22,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:01:22,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:22,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:01:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:22,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:22,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:01:22,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:22,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447776986] [2020-10-28 18:01:22,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:22,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:01:22,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429895469] [2020-10-28 18:01:22,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:01:22,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:01:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:01:22,336 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-28 18:01:25,565 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:26,329 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:27,197 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:27,915 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:28,716 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:29,889 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-28 18:01:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:01:29,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-28 18:01:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:29,922 INFO L225 Difference]: With dead ends: 1056 [2020-10-28 18:01:29,923 INFO L226 Difference]: Without dead ends: 834 [2020-10-28 18:01:29,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:01:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-28 18:01:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-28 18:01:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-28 18:01:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-28 18:01:30,165 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-28 18:01:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:30,169 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-28 18:01:30,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:01:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-28 18:01:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:01:30,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:30,182 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] [2020-10-28 18:01:30,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:01:30,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:30,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-28 18:01:30,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:30,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320470371] [2020-10-28 18:01:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 18:01:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 18:01:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 18:01:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,507 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:34,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:01:34,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:34,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:01:35,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-28 18:01:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 18:01:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:01:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:01:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 18:01:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:01:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:01:35,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:01:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:35,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:01:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:35,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:01:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:35,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:35,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:35,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:01:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:01:35,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:01:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:35,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:01:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:35,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:35,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:35,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:35,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:01:35,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:35,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:35,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320470371] [2020-10-28 18:01:35,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:35,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 18:01:35,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414565383] [2020-10-28 18:01:35,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 18:01:35,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:35,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 18:01:35,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 18:01:35,960 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-28 18:01:45,784 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:01:46,974 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-28 18:01:48,307 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:01:49,451 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:01:50,978 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:51,870 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:52,991 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:53,990 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:55,025 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:56,707 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-28 18:01:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:01:56,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-28 18:01:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:56,715 INFO L225 Difference]: With dead ends: 1057 [2020-10-28 18:01:56,716 INFO L226 Difference]: Without dead ends: 845 [2020-10-28 18:01:56,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:01:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-28 18:01:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-28 18:01:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-28 18:01:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-28 18:01:56,877 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-28 18:01:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:56,878 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-28 18:01:56,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 18:01:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-28 18:01:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 18:01:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:56,883 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, 1, 1, 1, 1, 1] [2020-10-28 18:01:56,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:01:56,883 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-28 18:01:56,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:56,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100405499] [2020-10-28 18:01:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:02,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:02,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-28 18:02:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:02:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-28 18:02:02,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:02,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:02:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 18:02:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 18:02:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:03,218 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:02:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:02:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:03,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:03,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:02:03,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:03,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:02:03,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:03,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:02:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:02:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-28 18:02:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:03,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 18:02:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:02:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:03,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:02:03,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:02:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:03,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:02:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:02:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:03,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:03,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:03,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:02:03,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:03,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:02:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:03,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:03,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:03,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:02:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:02:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:04,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:04,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:02:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:02:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:04,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-28 18:02:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:04,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:04,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:02:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:04,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-28 18:02:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:02:04,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:02:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:04,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:02:04,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:02:04,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100405499] [2020-10-28 18:02:04,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:02:04,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:02:04,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9561992] [2020-10-28 18:02:04,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:02:04,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:02:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:02:04,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:02:04,324 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-28 18:02:05,470 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:02:12,328 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:02:13,033 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:02:13,912 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:02:14,724 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:15,436 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:16,043 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:02:16,344 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:18,151 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:18,740 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:19,366 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:20,782 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:02:21,111 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:21,567 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:02:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:02:21,617 INFO L93 Difference]: Finished difference Result 1304 states and 2208 transitions. [2020-10-28 18:02:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:02:21,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-28 18:02:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:02:21,626 INFO L225 Difference]: With dead ends: 1304 [2020-10-28 18:02:21,626 INFO L226 Difference]: Without dead ends: 1098 [2020-10-28 18:02:21,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-28 18:02:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-28 18:02:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 962. [2020-10-28 18:02:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-28 18:02:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1641 transitions. [2020-10-28 18:02:21,796 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1641 transitions. Word has length 252 [2020-10-28 18:02:21,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:02:21,797 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1641 transitions. [2020-10-28 18:02:21,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:02:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1641 transitions. [2020-10-28 18:02:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 18:02:21,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:02:21,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:02:21,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:02:21,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:02:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:02:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash 295384056, now seen corresponding path program 1 times [2020-10-28 18:02:21,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:02:21,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191352586] [2020-10-28 18:02:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:02:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 18:02:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:02:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-28 18:02:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:28,229 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:02:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:02:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:02:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:02:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:28,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:02:28,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-28 18:02:28,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:28,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:02:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:02:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:02:29,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:02:29,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:29,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:02:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:29,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:02:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:02:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:29,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:02:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:29,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:02:29,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:02:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:02:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:02:29,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 18:02:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 18:02:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:02:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-28 18:02:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:29,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:02:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:02:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:29,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:02:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:02:29,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191352586] [2020-10-28 18:02:29,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:02:29,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:02:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181688812] [2020-10-28 18:02:29,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:02:29,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:02:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:02:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:02:29,830 INFO L87 Difference]: Start difference. First operand 962 states and 1641 transitions. Second operand 11 states. [2020-10-28 18:02:30,980 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:02:32,093 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:02:33,770 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:02:34,890 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:02:48,364 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:02:48,844 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:49,268 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:50,181 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:50,908 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:52,073 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:52,804 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:53,825 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:54,530 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:55,822 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:56,184 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:02:57,753 INFO L93 Difference]: Finished difference Result 3100 states and 5297 transitions. [2020-10-28 18:02:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:02:57,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-28 18:02:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:02:57,766 INFO L225 Difference]: With dead ends: 3100 [2020-10-28 18:02:57,766 INFO L226 Difference]: Without dead ends: 2209 [2020-10-28 18:02:57,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:02:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2020-10-28 18:02:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1952. [2020-10-28 18:02:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-28 18:02:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3311 transitions. [2020-10-28 18:02:58,124 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3311 transitions. Word has length 256 [2020-10-28 18:02:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:02:58,125 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 3311 transitions. [2020-10-28 18:02:58,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:02:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3311 transitions. [2020-10-28 18:02:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 18:02:58,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:02:58,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:02:58,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:02:58,132 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:02:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:02:58,133 INFO L82 PathProgramCache]: Analyzing trace with hash 147428310, now seen corresponding path program 1 times [2020-10-28 18:02:58,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:02:58,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883845017] [2020-10-28 18:02:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:02:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:58,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:03:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 18:03:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:04,550 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:04,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:03:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-28 18:03:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:03:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:03:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:05,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:03:05,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:03:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:05,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:03:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:03:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:05,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 18:03:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:05,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:03:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:03:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:03:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 18:03:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:05,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:03:05,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:05,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 18:03:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:05,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:05,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883845017] [2020-10-28 18:03:05,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:05,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:03:05,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801805065] [2020-10-28 18:03:05,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:03:05,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:03:05,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:03:05,959 INFO L87 Difference]: Start difference. First operand 1952 states and 3311 transitions. Second operand 11 states. [2020-10-28 18:03:07,115 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:03:08,243 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:03:09,788 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:03:10,952 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:25,261 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:25,748 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:26,188 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:27,128 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:27,863 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:29,029 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:29,766 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:30,801 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:31,526 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:33,050 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:33,494 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:35,025 INFO L93 Difference]: Finished difference Result 6502 states and 11058 transitions. [2020-10-28 18:03:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:03:35,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-28 18:03:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:35,052 INFO L225 Difference]: With dead ends: 6502 [2020-10-28 18:03:35,052 INFO L226 Difference]: Without dead ends: 4661 [2020-10-28 18:03:35,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:03:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2020-10-28 18:03:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4162. [2020-10-28 18:03:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4162 states. [2020-10-28 18:03:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 7035 transitions. [2020-10-28 18:03:35,888 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 7035 transitions. Word has length 257 [2020-10-28 18:03:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:35,889 INFO L481 AbstractCegarLoop]: Abstraction has 4162 states and 7035 transitions. [2020-10-28 18:03:35,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:03:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 7035 transitions. [2020-10-28 18:03:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 18:03:35,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:35,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:03:35,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:03:35,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:35,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1024909757, now seen corresponding path program 1 times [2020-10-28 18:03:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822441594] [2020-10-28 18:03:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:40,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:40,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 18:03:40,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:03:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 18:03:40,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:42,235 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:42,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:42,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:42,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:42,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:03:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:42,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:03:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-28 18:03:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:42,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:03:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:42,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:03:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:42,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:03:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:43,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:03:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:03:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:03:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:03:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:03:43,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 18:03:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 18:03:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:43,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:43,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:43,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822441594] [2020-10-28 18:03:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:03:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161545591] [2020-10-28 18:03:43,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:03:43,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:03:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:03:43,533 INFO L87 Difference]: Start difference. First operand 4162 states and 7035 transitions. Second operand 11 states. [2020-10-28 18:03:44,767 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:03:45,965 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-28 18:03:47,428 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:03:49,740 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-28 18:04:11,325 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:04:11,999 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:12,480 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:13,419 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:13,794 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:14,543 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:15,884 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:16,406 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:17,225 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:18,229 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:18,987 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:19,862 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:21,031 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:22,367 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:22,800 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:23,234 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:04:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:04:25,785 INFO L93 Difference]: Finished difference Result 17363 states and 29387 transitions. [2020-10-28 18:04:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:04:25,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-28 18:04:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:04:25,845 INFO L225 Difference]: With dead ends: 17363 [2020-10-28 18:04:25,845 INFO L226 Difference]: Without dead ends: 13382 [2020-10-28 18:04:25,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:04:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2020-10-28 18:04:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 12010. [2020-10-28 18:04:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12010 states. [2020-10-28 18:04:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 20233 transitions. [2020-10-28 18:04:28,074 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 20233 transitions. Word has length 257 [2020-10-28 18:04:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:04:28,075 INFO L481 AbstractCegarLoop]: Abstraction has 12010 states and 20233 transitions. [2020-10-28 18:04:28,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:04:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 20233 transitions. [2020-10-28 18:04:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 18:04:28,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:04:28,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:04:28,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:04:28,104 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:04:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:04:28,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1433576345, now seen corresponding path program 1 times [2020-10-28 18:04:28,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:04:28,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218742472] [2020-10-28 18:04:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:04:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:33,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:04:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 18:04:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:34,368 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:04:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:04:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:04:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:04:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:34,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:34,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 18:04:34,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:04:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-28 18:04:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:34,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:04:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 18:04:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 18:04:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:04:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:35,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:04:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:04:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 18:04:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-28 18:04:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 18:04:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:04:35,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218742472] [2020-10-28 18:04:35,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:04:35,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:04:35,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876819052] [2020-10-28 18:04:35,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:04:35,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:04:35,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:04:35,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:04:35,487 INFO L87 Difference]: Start difference. First operand 12010 states and 20233 transitions. Second operand 11 states. [2020-10-28 18:04:36,711 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:04:37,842 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:04:39,406 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:04:40,560 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:04:57,638 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 406