/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_floodmax.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:39:12,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:39:12,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:39:12,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:39:12,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:39:12,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:39:12,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:39:12,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:39:12,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:39:12,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:39:12,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:39:12,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:39:12,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:39:12,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:39:12,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:39:12,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:39:12,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:39:12,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:39:12,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:39:12,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:39:12,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:39:12,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:39:12,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:39:12,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:39:12,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:39:12,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:39:12,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:39:12,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:39:12,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:39:12,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:39:12,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:39:12,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:39:12,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:39:12,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:39:12,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:39:12,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:39:12,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:39:12,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:39:12,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:39:12,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:39:12,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:39:12,223 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 17:39:12,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:39:12,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:39:12,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:39:12,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:39:12,266 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:39:12,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:39:12,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:39:12,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:39:12,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:39:12,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:39:12,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:39:12,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:39:12,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:39:12,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:39:12,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:39:12,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:39:12,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:39:12,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:39:12,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:39:12,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:39:12,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:39:12,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:39:12,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:39:12,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:39:12,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:39:12,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:39:12,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:39:12,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:39:12,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:39:12,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:39:12,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:39:12,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:39:12,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:39:12,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:39:12,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:39:12,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 17:39:12,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada020d4f/1cffbeefcb9d4bf7bbda20bd0405119f/FLAGeaa6ad8c2 [2020-10-28 17:39:13,680 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:39:13,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 17:39:13,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada020d4f/1cffbeefcb9d4bf7bbda20bd0405119f/FLAGeaa6ad8c2 [2020-10-28 17:39:13,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ada020d4f/1cffbeefcb9d4bf7bbda20bd0405119f [2020-10-28 17:39:13,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:39:13,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:39:13,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:39:13,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:39:13,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:39:13,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:39:13" (1/1) ... [2020-10-28 17:39:13,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3472a091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:13, skipping insertion in model container [2020-10-28 17:39:13,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:39:13" (1/1) ... [2020-10-28 17:39:13,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:39:13,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:39:14,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:39:14,658 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:39:14,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:39:14,811 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:39:14,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14 WrapperNode [2020-10-28 17:39:14,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:39:14,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:39:14,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:39:14,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:39:14,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:14,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:14,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:14,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:14,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:14,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:15,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... [2020-10-28 17:39:15,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:39:15,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:39:15,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:39:15,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:39:15,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:39:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:39:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:39:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:39:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:39:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:39:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:39:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:39:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 17:39:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 17:39:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:39:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:39:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:39:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:39:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:39:15,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:39:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:39:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:39:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:39:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:39:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:39:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:39:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:39:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:39:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:39:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:39:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:39:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 17:39:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 17:39:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:39:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:39:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:39:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:39:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:39:15,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:39:15,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:39:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:39:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:39:17,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:39:17,208 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:39:17,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:39:17 BoogieIcfgContainer [2020-10-28 17:39:17,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:39:17,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:39:17,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:39:17,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:39:17,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:39:13" (1/3) ... [2020-10-28 17:39:17,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102dfa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:39:17, skipping insertion in model container [2020-10-28 17:39:17,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:39:14" (2/3) ... [2020-10-28 17:39:17,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102dfa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:39:17, skipping insertion in model container [2020-10-28 17:39:17,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:39:17" (3/3) ... [2020-10-28 17:39:17,221 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c [2020-10-28 17:39:17,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:39:17,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:39:17,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:39:17,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:39:17,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:39:17,315 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:39:17,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:39:17,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:39:17,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:39:17,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:39:17,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:39:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2020-10-28 17:39:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 17:39:17,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:39:17,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:39:17,391 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:39:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:39:17,397 INFO L82 PathProgramCache]: Analyzing trace with hash -966148239, now seen corresponding path program 1 times [2020-10-28 17:39:17,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:39:17,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195299545] [2020-10-28 17:39:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:39:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:19,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 17:39:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-28 17:39:19,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:19,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-28 17:39:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:39:20,199 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:39:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:39:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:39:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 17:39:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:39:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:39:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 17:39:20,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:20,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:39:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:39:20,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:39:20,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:39:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 17:39:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:39:20,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:39:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 17:39:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:39:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 17:39:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:39:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 17:39:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-28 17:39:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:39:20,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 17:39:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:20,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:39:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:20,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:21,104 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 17:39:21,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195299545] [2020-10-28 17:39:21,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:39:21,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:39:21,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276607382] [2020-10-28 17:39:21,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:39:21,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:39:21,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:39:21,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:39:21,132 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 8 states. [2020-10-28 17:39:24,047 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:24,635 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:25,258 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:25,750 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:26,248 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:39:26,965 INFO L93 Difference]: Finished difference Result 976 states and 1721 transitions. [2020-10-28 17:39:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:39:26,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-28 17:39:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:39:27,000 INFO L225 Difference]: With dead ends: 976 [2020-10-28 17:39:27,000 INFO L226 Difference]: Without dead ends: 784 [2020-10-28 17:39:27,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:39:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-28 17:39:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 734. [2020-10-28 17:39:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-28 17:39:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1328 transitions. [2020-10-28 17:39:27,278 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1328 transitions. Word has length 183 [2020-10-28 17:39:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:39:27,279 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1328 transitions. [2020-10-28 17:39:27,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:39:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1328 transitions. [2020-10-28 17:39:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 17:39:27,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:39:27,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:39:27,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:39:27,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:39:27,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:39:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash 973013807, now seen corresponding path program 1 times [2020-10-28 17:39:27,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:39:27,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054833298] [2020-10-28 17:39:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:39:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 17:39:30,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3250 [2020-10-28 17:39:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:30,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:39:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 17:39:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:39:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:31,664 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:39:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:39:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:31,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:39:31,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:39:31,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:31,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:39:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:39:32,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-28 17:39:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:39:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 17:39:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:39:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:39:32,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:39:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 17:39:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:32,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 17:39:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:39:32,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 17:39:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 17:39:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-28 17:39:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:39:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 17:39:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:32,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:39:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:32,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:33,094 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 17:39:33,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054833298] [2020-10-28 17:39:33,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:39:33,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 17:39:33,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055625145] [2020-10-28 17:39:33,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:39:33,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:39:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:39:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:39:33,107 INFO L87 Difference]: Start difference. First operand 734 states and 1328 transitions. Second operand 14 states. [2020-10-28 17:39:41,825 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-28 17:39:42,693 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2020-10-28 17:39:43,669 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-28 17:39:44,491 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:39:45,722 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:46,400 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:47,209 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:47,916 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:48,654 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:39:49,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:39:49,929 INFO L93 Difference]: Finished difference Result 977 states and 1723 transitions. [2020-10-28 17:39:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:39:49,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-28 17:39:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:39:49,938 INFO L225 Difference]: With dead ends: 977 [2020-10-28 17:39:49,938 INFO L226 Difference]: Without dead ends: 795 [2020-10-28 17:39:49,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:39:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-28 17:39:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 734. [2020-10-28 17:39:50,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-28 17:39:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1268 transitions. [2020-10-28 17:39:50,129 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1268 transitions. Word has length 183 [2020-10-28 17:39:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:39:50,130 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1268 transitions. [2020-10-28 17:39:50,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:39:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1268 transitions. [2020-10-28 17:39:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 17:39:50,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:39:50,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:39:50,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:39:50,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:39:50,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:39:50,139 INFO L82 PathProgramCache]: Analyzing trace with hash -929784361, now seen corresponding path program 1 times [2020-10-28 17:39:50,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:39:50,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513177808] [2020-10-28 17:39:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:39:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:55,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:55,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 17:39:55,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:39:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 17:39:55,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:55,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:39:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 17:39:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 17:39:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:39:56,264 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:39:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:39:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:39:56,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:39:56,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:39:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:39:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 17:39:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:39:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:39:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:39:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:39:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:56,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:39:56,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:39:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:39:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:39:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:39:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:39:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:56,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:56,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:56,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:39:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:56,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:39:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:57,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:39:57,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:57,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:39:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:39:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:39:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-28 17:39:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:57,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:57,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:57,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:39:57,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:57,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-28 17:39:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:39:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:39:57,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:39:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:39:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:39:57,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:39:57,226 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 17:39:57,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513177808] [2020-10-28 17:39:57,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:39:57,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:39:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371013129] [2020-10-28 17:39:57,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:39:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:39:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:39:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:39:57,229 INFO L87 Difference]: Start difference. First operand 734 states and 1268 transitions. Second operand 11 states. [2020-10-28 17:39:58,082 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:40:04,700 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:40:05,276 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:40:05,936 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:40:06,560 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:07,020 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:07,556 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 17:40:07,787 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:09,327 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:09,773 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:10,239 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:40:11,302 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:40:11,551 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:11,823 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 17:40:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:40:11,906 INFO L93 Difference]: Finished difference Result 1180 states and 1994 transitions. [2020-10-28 17:40:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:40:11,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-28 17:40:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:40:11,915 INFO L225 Difference]: With dead ends: 1180 [2020-10-28 17:40:11,916 INFO L226 Difference]: Without dead ends: 1004 [2020-10-28 17:40:11,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:40:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-28 17:40:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 898. [2020-10-28 17:40:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-28 17:40:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1537 transitions. [2020-10-28 17:40:12,103 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1537 transitions. Word has length 242 [2020-10-28 17:40:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:40:12,104 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1537 transitions. [2020-10-28 17:40:12,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:40:12,104 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1537 transitions. [2020-10-28 17:40:12,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 17:40:12,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:40:12,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:40:12,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:40:12,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:40:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:40:12,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1924668613, now seen corresponding path program 1 times [2020-10-28 17:40:12,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:40:12,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525994817] [2020-10-28 17:40:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:40:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:13,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:17,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 17:40:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:40:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 17:40:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:17,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:40:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:40:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-28 17:40:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:18,333 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:40:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:40:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:40:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:18,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:40:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-28 17:40:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:18,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:40:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 17:40:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:19,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:40:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:40:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:40:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:40:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:40:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:19,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:40:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:40:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:19,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:40:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:40:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:19,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:40:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:19,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:40:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:40:19,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:40:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:40:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:19,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 17:40:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-28 17:40:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:19,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:19,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:40:19,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:19,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:40:19,927 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 17:40:19,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525994817] [2020-10-28 17:40:19,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:40:19,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:40:19,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527732325] [2020-10-28 17:40:19,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:40:19,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:40:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:40:19,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:40:19,931 INFO L87 Difference]: Start difference. First operand 898 states and 1537 transitions. Second operand 11 states. [2020-10-28 17:40:20,757 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:40:21,520 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:40:22,779 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:40:23,585 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:40:36,600 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:40:37,060 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:40:37,424 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:38,153 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:40:38,832 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:39,654 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:40:40,313 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:41,091 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:40:41,752 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:42,857 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:40:43,240 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:40:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:40:44,833 INFO L93 Difference]: Finished difference Result 2851 states and 4872 transitions. [2020-10-28 17:40:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:40:44,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-28 17:40:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:40:44,846 INFO L225 Difference]: With dead ends: 2851 [2020-10-28 17:40:44,847 INFO L226 Difference]: Without dead ends: 2024 [2020-10-28 17:40:44,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:40:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2020-10-28 17:40:45,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1826. [2020-10-28 17:40:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-28 17:40:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3107 transitions. [2020-10-28 17:40:45,141 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3107 transitions. Word has length 246 [2020-10-28 17:40:45,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:40:45,142 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 3107 transitions. [2020-10-28 17:40:45,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:40:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3107 transitions. [2020-10-28 17:40:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 17:40:45,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:40:45,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:40:45,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:40:45,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:40:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:40:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1346910914, now seen corresponding path program 1 times [2020-10-28 17:40:45,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:40:45,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653571611] [2020-10-28 17:40:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:40:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:40:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:40:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 17:40:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:51,227 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:40:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:40:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:40:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:40:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:40:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:40:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:40:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:40:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:40:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:40:52,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:40:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:52,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:40:52,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:40:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:40:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:40:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:40:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:40:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:40:52,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:40:52,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:40:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:40:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:40:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 17:40:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-28 17:40:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:40:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:40:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:40:52,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:40:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:40:52,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:40:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:40:52,719 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 17:40:52,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653571611] [2020-10-28 17:40:52,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:40:52,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:40:52,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983742281] [2020-10-28 17:40:52,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:40:52,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:40:52,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:40:52,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:40:52,722 INFO L87 Difference]: Start difference. First operand 1826 states and 3107 transitions. Second operand 11 states. [2020-10-28 17:40:53,726 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:40:54,652 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-28 17:40:55,980 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-28 17:40:57,654 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-28 17:41:15,599 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:41:16,158 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:16,519 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:17,279 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:17,673 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:18,144 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:19,261 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:19,665 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:20,199 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:21,265 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:21,717 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:22,267 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:23,249 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:24,131 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:24,467 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:24,934 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 17:41:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:41:26,818 INFO L93 Difference]: Finished difference Result 7245 states and 12307 transitions. [2020-10-28 17:41:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 17:41:26,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-28 17:41:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:41:26,850 INFO L225 Difference]: With dead ends: 7245 [2020-10-28 17:41:26,850 INFO L226 Difference]: Without dead ends: 5530 [2020-10-28 17:41:26,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:41:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2020-10-28 17:41:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5051. [2020-10-28 17:41:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5051 states. [2020-10-28 17:41:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 8574 transitions. [2020-10-28 17:41:27,958 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 8574 transitions. Word has length 246 [2020-10-28 17:41:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:41:27,959 INFO L481 AbstractCegarLoop]: Abstraction has 5051 states and 8574 transitions. [2020-10-28 17:41:27,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:41:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 8574 transitions. [2020-10-28 17:41:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-28 17:41:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:41:27,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:41:27,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:41:27,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:41:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:41:27,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1959199782, now seen corresponding path program 1 times [2020-10-28 17:41:27,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:41:27,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422741729] [2020-10-28 17:41:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:41:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 17:41:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:41:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:41:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:33,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:41:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:41:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 17:41:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:33,973 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:41:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:41:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:41:34,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:41:34,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:34,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:41:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:41:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:41:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:41:34,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:41:34,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:41:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:41:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:41:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:41:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:34,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:41:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:41:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:41:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:41:34,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:41:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:34,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:34,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:41:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:41:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 17:41:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:41:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 17:41:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:41:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:41:35,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:41:35,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:41:35,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:41:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 17:41:35,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:41:35,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:41:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:41:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:41:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:41:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:41:35,384 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 17:41:35,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422741729] [2020-10-28 17:41:35,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:41:35,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:41:35,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840240563] [2020-10-28 17:41:35,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:41:35,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:41:35,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:41:35,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:41:35,388 INFO L87 Difference]: Start difference. First operand 5051 states and 8574 transitions. Second operand 11 states. [2020-10-28 17:41:36,286 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:41:37,115 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:41:38,218 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:41:39,092 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:41:53,165 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:41:53,632 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:53,989 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:54,703 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:55,349 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:56,197 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:56,807 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:57,589 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:58,221 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:41:59,408 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:41:59,763 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:01,615 INFO L93 Difference]: Finished difference Result 15901 states and 26910 transitions. [2020-10-28 17:42:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:42:01,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-28 17:42:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:01,676 INFO L225 Difference]: With dead ends: 15901 [2020-10-28 17:42:01,677 INFO L226 Difference]: Without dead ends: 10950 [2020-10-28 17:42:01,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:42:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2020-10-28 17:42:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 10051. [2020-10-28 17:42:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10051 states. [2020-10-28 17:42:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10051 states to 10051 states and 16860 transitions. [2020-10-28 17:42:03,647 INFO L78 Accepts]: Start accepts. Automaton has 10051 states and 16860 transitions. Word has length 247 [2020-10-28 17:42:03,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:03,648 INFO L481 AbstractCegarLoop]: Abstraction has 10051 states and 16860 transitions. [2020-10-28 17:42:03,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:42:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10051 states and 16860 transitions. [2020-10-28 17:42:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 17:42:03,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:03,674 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] [2020-10-28 17:42:03,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:42:03,675 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:03,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2043473130, now seen corresponding path program 1 times [2020-10-28 17:42:03,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:03,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681261649] [2020-10-28 17:42:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:42:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 17:42:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:09,663 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-28 17:42:09,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:42:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:42:09,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:42:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:42:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 17:42:10,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-28 17:42:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:10,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:42:10,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-28 17:42:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:10,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 17:42:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:10,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 17:42:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:42:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:42:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 17:42:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:42:10,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:42:10,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:42:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:42:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:42:10,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-28 17:42:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 17:42:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:42:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:42:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:42:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:42:10,910 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 17:42:10,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681261649] [2020-10-28 17:42:10,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:42:10,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 17:42:10,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377282791] [2020-10-28 17:42:10,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:42:10,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:42:10,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:42:10,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:42:10,913 INFO L87 Difference]: Start difference. First operand 10051 states and 16860 transitions. Second operand 11 states. [2020-10-28 17:42:11,781 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-28 17:42:12,682 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-28 17:42:13,873 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2020-10-28 17:42:14,776 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:42:31,701 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-28 17:42:32,178 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:32,537 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:33,247 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:33,921 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:34,719 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:35,449 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:36,285 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:36,950 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:38,058 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 17:42:38,454 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 17:42:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:42:40,430 INFO L93 Difference]: Finished difference Result 32148 states and 53804 transitions. [2020-10-28 17:42:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:42:40,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-10-28 17:42:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:42:40,503 INFO L225 Difference]: With dead ends: 32148 [2020-10-28 17:42:40,504 INFO L226 Difference]: Without dead ends: 22986 [2020-10-28 17:42:40,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:42:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22986 states. [2020-10-28 17:42:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22986 to 21277. [2020-10-28 17:42:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21277 states. [2020-10-28 17:42:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21277 states to 21277 states and 35398 transitions. [2020-10-28 17:42:44,015 INFO L78 Accepts]: Start accepts. Automaton has 21277 states and 35398 transitions. Word has length 248 [2020-10-28 17:42:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:42:44,016 INFO L481 AbstractCegarLoop]: Abstraction has 21277 states and 35398 transitions. [2020-10-28 17:42:44,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:42:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21277 states and 35398 transitions. [2020-10-28 17:42:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 17:42:44,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:42:44,065 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] [2020-10-28 17:42:44,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:42:44,065 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:42:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:42:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1975419138, now seen corresponding path program 1 times [2020-10-28 17:42:44,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:42:44,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487252739] [2020-10-28 17:42:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:42:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:42:44,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:44,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:42:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking...