/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:07,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:07,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:07,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:07,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:07,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:07,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:07,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:07,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:07,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:07,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:07,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:07,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:07,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:07,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:07,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:07,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:07,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:07,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:07,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:07,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:07,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:07,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:07,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:07,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:07,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:07,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:07,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:07,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:07,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:07,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:07,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:07,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:07,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:07,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:07,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:07,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:07,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:07,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:07,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:07,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:07,789 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 [2020-10-29 12:55:07,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:07,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:07,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:07,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:07,848 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:07,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:07,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:07,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:07,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:07,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:07,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:07,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:07,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:07,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:07,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:07,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:07,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:07,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:07,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:07,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:07,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:07,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:07,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:07,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:07,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:07,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:07,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:07,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:07,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:07,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:08,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:08,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:08,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:08,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:08,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:08,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:08,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25a3a430/bac2aa9f4ee6486e8701154573a3f852/FLAG60705240b [2020-10-29 12:55:09,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:55:09,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:09,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25a3a430/bac2aa9f4ee6486e8701154573a3f852/FLAG60705240b [2020-10-29 12:55:09,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25a3a430/bac2aa9f4ee6486e8701154573a3f852 [2020-10-29 12:55:09,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:55:09,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:55:09,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:09,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:55:09,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:55:09,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:09,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be6b4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09, skipping insertion in model container [2020-10-29 12:55:09,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:09,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:55:09,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:55:09,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:09,723 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:55:09,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:09,971 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:55:09,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09 WrapperNode [2020-10-29 12:55:09,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:09,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:55:09,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:55:09,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:55:09,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:09,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (1/1) ... [2020-10-29 12:55:10,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:55:10,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:55:10,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:55:10,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:55:10,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (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 [2020-10-29 12:55:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:55:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:55:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:55:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:55:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:55:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:55:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:55:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:55:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:55:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:55:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:55:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:55:11,245 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:55:11,245 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:55:11,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:11 BoogieIcfgContainer [2020-10-29 12:55:11,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:55:11,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:55:11,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:55:11,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:55:11,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:55:09" (1/3) ... [2020-10-29 12:55:11,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5d1323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:11, skipping insertion in model container [2020-10-29 12:55:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:09" (2/3) ... [2020-10-29 12:55:11,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5d1323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:11, skipping insertion in model container [2020-10-29 12:55:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:11" (3/3) ... [2020-10-29 12:55:11,258 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:55:11,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:55:11,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:55:11,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:55:11,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:55:11,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:55:11,319 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:55:11,319 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:55:11,319 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:55:11,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:55:11,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:55:11,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:55:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-10-29 12:55:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 12:55:11,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:11,358 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] [2020-10-29 12:55:11,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:11,366 INFO L82 PathProgramCache]: Analyzing trace with hash -64343422, now seen corresponding path program 1 times [2020-10-29 12:55:11,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:11,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471246654] [2020-10-29 12:55:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:16,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:16,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:55:16,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:55:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:55:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:16,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 12:55:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:55:17,285 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:17,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:17,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:17,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:17,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:55:17,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:17,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:17,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471246654] [2020-10-29 12:55:17,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:17,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:17,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649835245] [2020-10-29 12:55:17,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:17,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:17,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:17,400 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 5 states. [2020-10-29 12:55:19,326 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:55:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:20,235 INFO L93 Difference]: Finished difference Result 628 states and 1101 transitions. [2020-10-29 12:55:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:55:20,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-29 12:55:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:20,255 INFO L225 Difference]: With dead ends: 628 [2020-10-29 12:55:20,255 INFO L226 Difference]: Without dead ends: 418 [2020-10-29 12:55:20,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-29 12:55:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2020-10-29 12:55:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-29 12:55:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 606 transitions. [2020-10-29 12:55:20,371 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 606 transitions. Word has length 99 [2020-10-29 12:55:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:20,372 INFO L481 AbstractCegarLoop]: Abstraction has 415 states and 606 transitions. [2020-10-29 12:55:20,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 606 transitions. [2020-10-29 12:55:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:55:20,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:20,378 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] [2020-10-29 12:55:20,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:55:20,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:20,380 INFO L82 PathProgramCache]: Analyzing trace with hash -434004434, now seen corresponding path program 1 times [2020-10-29 12:55:20,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:20,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794094876] [2020-10-29 12:55:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:55:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:55:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 12:55:25,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:25,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:55:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 12:55:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:55:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:25,921 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:55:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:25,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:25,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794094876] [2020-10-29 12:55:25,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:25,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:55:25,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456572509] [2020-10-29 12:55:25,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:55:25,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:55:25,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:55:25,997 INFO L87 Difference]: Start difference. First operand 415 states and 606 transitions. Second operand 4 states. [2020-10-29 12:55:26,412 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 12:55:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:27,499 INFO L93 Difference]: Finished difference Result 817 states and 1254 transitions. [2020-10-29 12:55:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:55:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-29 12:55:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:27,506 INFO L225 Difference]: With dead ends: 817 [2020-10-29 12:55:27,506 INFO L226 Difference]: Without dead ends: 620 [2020-10-29 12:55:27,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-29 12:55:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 617. [2020-10-29 12:55:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-29 12:55:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 931 transitions. [2020-10-29 12:55:27,589 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 931 transitions. Word has length 100 [2020-10-29 12:55:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:27,592 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 931 transitions. [2020-10-29 12:55:27,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:55:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 931 transitions. [2020-10-29 12:55:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:55:27,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:27,601 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] [2020-10-29 12:55:27,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:55:27,602 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1272225271, now seen corresponding path program 1 times [2020-10-29 12:55:27,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:27,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841007915] [2020-10-29 12:55:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:32,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:55:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:55:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:55:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:32,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:32,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:55:32,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:33,075 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:33,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:33,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:33,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:55:33,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:33,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:33,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:33,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841007915] [2020-10-29 12:55:33,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:33,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:33,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720042172] [2020-10-29 12:55:33,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:33,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:33,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:33,174 INFO L87 Difference]: Start difference. First operand 617 states and 931 transitions. Second operand 5 states. [2020-10-29 12:55:34,557 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:55:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:35,501 INFO L93 Difference]: Finished difference Result 1771 states and 2663 transitions. [2020-10-29 12:55:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:35,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-29 12:55:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:35,510 INFO L225 Difference]: With dead ends: 1771 [2020-10-29 12:55:35,510 INFO L226 Difference]: Without dead ends: 1179 [2020-10-29 12:55:35,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-29 12:55:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1176. [2020-10-29 12:55:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-10-29 12:55:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1752 transitions. [2020-10-29 12:55:35,589 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1752 transitions. Word has length 100 [2020-10-29 12:55:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:35,589 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1752 transitions. [2020-10-29 12:55:35,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1752 transitions. [2020-10-29 12:55:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 12:55:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:35,593 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] [2020-10-29 12:55:35,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:55:35,593 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1739226743, now seen corresponding path program 1 times [2020-10-29 12:55:35,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:35,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759544781] [2020-10-29 12:55:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:55:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:55:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:55:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:40,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 12:55:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:41,100 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:55:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:41,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:55:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:41,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759544781] [2020-10-29 12:55:41,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:41,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:41,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973169673] [2020-10-29 12:55:41,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:41,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:41,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:41,183 INFO L87 Difference]: Start difference. First operand 1176 states and 1752 transitions. Second operand 5 states. [2020-10-29 12:55:42,722 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:55:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:43,765 INFO L93 Difference]: Finished difference Result 3301 states and 4937 transitions. [2020-10-29 12:55:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:43,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-29 12:55:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:43,778 INFO L225 Difference]: With dead ends: 3301 [2020-10-29 12:55:43,779 INFO L226 Difference]: Without dead ends: 2268 [2020-10-29 12:55:43,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2020-10-29 12:55:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2265. [2020-10-29 12:55:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2265 states. [2020-10-29 12:55:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3339 transitions. [2020-10-29 12:55:43,942 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3339 transitions. Word has length 101 [2020-10-29 12:55:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:43,943 INFO L481 AbstractCegarLoop]: Abstraction has 2265 states and 3339 transitions. [2020-10-29 12:55:43,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3339 transitions. [2020-10-29 12:55:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 12:55:43,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:43,947 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] [2020-10-29 12:55:43,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:55:43,948 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:43,948 INFO L82 PathProgramCache]: Analyzing trace with hash -321239718, now seen corresponding path program 1 times [2020-10-29 12:55:43,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:43,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770351499] [2020-10-29 12:55:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:44,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:55:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:49,471 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:49,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770351499] [2020-10-29 12:55:49,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:49,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:49,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975498577] [2020-10-29 12:55:49,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:49,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:49,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:49,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:49,540 INFO L87 Difference]: Start difference. First operand 2265 states and 3339 transitions. Second operand 5 states. [2020-10-29 12:55:51,051 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:55:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:52,235 INFO L93 Difference]: Finished difference Result 6001 states and 8937 transitions. [2020-10-29 12:55:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:52,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-29 12:55:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:52,258 INFO L225 Difference]: With dead ends: 6001 [2020-10-29 12:55:52,259 INFO L226 Difference]: Without dead ends: 4326 [2020-10-29 12:55:52,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2020-10-29 12:55:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4323. [2020-10-29 12:55:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4323 states. [2020-10-29 12:55:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 6289 transitions. [2020-10-29 12:55:52,636 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 6289 transitions. Word has length 102 [2020-10-29 12:55:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:52,637 INFO L481 AbstractCegarLoop]: Abstraction has 4323 states and 6289 transitions. [2020-10-29 12:55:52,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 6289 transitions. [2020-10-29 12:55:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 12:55:52,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:52,644 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] [2020-10-29 12:55:52,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:55:52,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:52,645 INFO L82 PathProgramCache]: Analyzing trace with hash 340978567, now seen corresponding path program 1 times [2020-10-29 12:55:52,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:52,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061365099] [2020-10-29 12:55:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:55:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:55:58,223 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:55:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:55:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:58,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:55:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:55:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:55:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:55:58,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:55:58,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:55:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:55:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:55:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:55:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:55:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:55:58,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061365099] [2020-10-29 12:55:58,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:55:58,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:55:58,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403273121] [2020-10-29 12:55:58,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:55:58,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:55:58,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:55:58,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:55:58,313 INFO L87 Difference]: Start difference. First operand 4323 states and 6289 transitions. Second operand 5 states. [2020-10-29 12:55:59,960 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:01,081 INFO L93 Difference]: Finished difference Result 11561 states and 16767 transitions. [2020-10-29 12:56:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:01,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-29 12:56:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:01,116 INFO L225 Difference]: With dead ends: 11561 [2020-10-29 12:56:01,116 INFO L226 Difference]: Without dead ends: 7646 [2020-10-29 12:56:01,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2020-10-29 12:56:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 7643. [2020-10-29 12:56:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7643 states. [2020-10-29 12:56:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 10887 transitions. [2020-10-29 12:56:01,773 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 10887 transitions. Word has length 103 [2020-10-29 12:56:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:01,774 INFO L481 AbstractCegarLoop]: Abstraction has 7643 states and 10887 transitions. [2020-10-29 12:56:01,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 10887 transitions. [2020-10-29 12:56:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 12:56:01,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:01,786 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] [2020-10-29 12:56:01,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:56:01,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:01,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1485595482, now seen corresponding path program 1 times [2020-10-29 12:56:01,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:01,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432406308] [2020-10-29 12:56:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:06,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:56:06,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:06,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:56:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:07,264 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:07,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:07,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:07,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432406308] [2020-10-29 12:56:07,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:07,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:07,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810472335] [2020-10-29 12:56:07,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:07,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:07,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:07,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:07,325 INFO L87 Difference]: Start difference. First operand 7643 states and 10887 transitions. Second operand 5 states. [2020-10-29 12:56:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:08,845 INFO L93 Difference]: Finished difference Result 13404 states and 19059 transitions. [2020-10-29 12:56:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:08,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-29 12:56:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:08,873 INFO L225 Difference]: With dead ends: 13404 [2020-10-29 12:56:08,873 INFO L226 Difference]: Without dead ends: 5850 [2020-10-29 12:56:08,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2020-10-29 12:56:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5850. [2020-10-29 12:56:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5850 states. [2020-10-29 12:56:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 8292 transitions. [2020-10-29 12:56:09,386 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 8292 transitions. Word has length 104 [2020-10-29 12:56:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:09,386 INFO L481 AbstractCegarLoop]: Abstraction has 5850 states and 8292 transitions. [2020-10-29 12:56:09,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 8292 transitions. [2020-10-29 12:56:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 12:56:09,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:09,397 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] [2020-10-29 12:56:09,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:56:09,398 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash -764573537, now seen corresponding path program 1 times [2020-10-29 12:56:09,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:09,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260917094] [2020-10-29 12:56:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:56:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 12:56:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:14,911 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:14,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:14,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:14,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:56:14,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:14,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:14,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260917094] [2020-10-29 12:56:14,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:14,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:14,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423285239] [2020-10-29 12:56:14,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:14,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:14,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:14,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:14,976 INFO L87 Difference]: Start difference. First operand 5850 states and 8292 transitions. Second operand 5 states. [2020-10-29 12:56:16,592 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:17,710 INFO L93 Difference]: Finished difference Result 14997 states and 21282 transitions. [2020-10-29 12:56:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:17,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-29 12:56:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:17,749 INFO L225 Difference]: With dead ends: 14997 [2020-10-29 12:56:17,749 INFO L226 Difference]: Without dead ends: 9467 [2020-10-29 12:56:17,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:17,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2020-10-29 12:56:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9464. [2020-10-29 12:56:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9464 states. [2020-10-29 12:56:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9464 states to 9464 states and 13218 transitions. [2020-10-29 12:56:18,501 INFO L78 Accepts]: Start accepts. Automaton has 9464 states and 13218 transitions. Word has length 107 [2020-10-29 12:56:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:18,501 INFO L481 AbstractCegarLoop]: Abstraction has 9464 states and 13218 transitions. [2020-10-29 12:56:18,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:18,501 INFO L276 IsEmpty]: Start isEmpty. Operand 9464 states and 13218 transitions. [2020-10-29 12:56:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:56:18,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:18,514 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] [2020-10-29 12:56:18,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:56:18,514 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2110201777, now seen corresponding path program 1 times [2020-10-29 12:56:18,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:18,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546862686] [2020-10-29 12:56:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:23,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:56:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:56:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 12:56:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:23,942 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:24,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546862686] [2020-10-29 12:56:24,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:24,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:24,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056848395] [2020-10-29 12:56:24,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:56:24,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:24,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:56:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:24,007 INFO L87 Difference]: Start difference. First operand 9464 states and 13218 transitions. Second operand 6 states. [2020-10-29 12:56:24,416 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 12:56:27,426 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:56:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:27,694 INFO L93 Difference]: Finished difference Result 21132 states and 31066 transitions. [2020-10-29 12:56:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:56:27,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-29 12:56:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:27,732 INFO L225 Difference]: With dead ends: 21132 [2020-10-29 12:56:27,733 INFO L226 Difference]: Without dead ends: 15584 [2020-10-29 12:56:27,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:56:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15584 states. [2020-10-29 12:56:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15584 to 15561. [2020-10-29 12:56:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15561 states. [2020-10-29 12:56:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15561 states to 15561 states and 22382 transitions. [2020-10-29 12:56:28,935 INFO L78 Accepts]: Start accepts. Automaton has 15561 states and 22382 transitions. Word has length 108 [2020-10-29 12:56:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:28,935 INFO L481 AbstractCegarLoop]: Abstraction has 15561 states and 22382 transitions. [2020-10-29 12:56:28,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:56:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15561 states and 22382 transitions. [2020-10-29 12:56:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:56:28,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:28,951 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] [2020-10-29 12:56:28,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:56:28,951 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1386090102, now seen corresponding path program 1 times [2020-10-29 12:56:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:28,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635488431] [2020-10-29 12:56:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:33,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:33,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:56:33,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:56:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:34,424 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:34,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:34,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:34,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635488431] [2020-10-29 12:56:34,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:34,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:34,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501606117] [2020-10-29 12:56:34,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:34,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:34,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:34,477 INFO L87 Difference]: Start difference. First operand 15561 states and 22382 transitions. Second operand 5 states. [2020-10-29 12:56:34,880 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 12:56:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:38,056 INFO L93 Difference]: Finished difference Result 27652 states and 39893 transitions. [2020-10-29 12:56:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:38,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 12:56:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:38,090 INFO L225 Difference]: With dead ends: 27652 [2020-10-29 12:56:38,090 INFO L226 Difference]: Without dead ends: 15564 [2020-10-29 12:56:38,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2020-10-29 12:56:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 15561. [2020-10-29 12:56:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15561 states. [2020-10-29 12:56:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15561 states to 15561 states and 22303 transitions. [2020-10-29 12:56:39,567 INFO L78 Accepts]: Start accepts. Automaton has 15561 states and 22303 transitions. Word has length 108 [2020-10-29 12:56:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:39,567 INFO L481 AbstractCegarLoop]: Abstraction has 15561 states and 22303 transitions. [2020-10-29 12:56:39,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 15561 states and 22303 transitions. [2020-10-29 12:56:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:56:39,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:39,581 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] [2020-10-29 12:56:39,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:56:39,581 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1260544357, now seen corresponding path program 1 times [2020-10-29 12:56:39,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:39,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098658938] [2020-10-29 12:56:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 12:56:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:56:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:45,248 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:45,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:45,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:45,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:56:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:45,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:45,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098658938] [2020-10-29 12:56:45,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:45,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:45,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647084537] [2020-10-29 12:56:45,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:45,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:45,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:45,313 INFO L87 Difference]: Start difference. First operand 15561 states and 22303 transitions. Second operand 5 states. [2020-10-29 12:56:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:47,402 INFO L93 Difference]: Finished difference Result 26116 states and 37603 transitions. [2020-10-29 12:56:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:47,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-29 12:56:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:47,419 INFO L225 Difference]: With dead ends: 26116 [2020-10-29 12:56:47,419 INFO L226 Difference]: Without dead ends: 11016 [2020-10-29 12:56:47,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11016 states. [2020-10-29 12:56:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11016 to 11015. [2020-10-29 12:56:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11015 states. [2020-10-29 12:56:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 15823 transitions. [2020-10-29 12:56:48,486 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 15823 transitions. Word has length 109 [2020-10-29 12:56:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:48,486 INFO L481 AbstractCegarLoop]: Abstraction has 11015 states and 15823 transitions. [2020-10-29 12:56:48,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 15823 transitions. [2020-10-29 12:56:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:56:48,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:48,493 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] [2020-10-29 12:56:48,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:56:48,494 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -600832959, now seen corresponding path program 1 times [2020-10-29 12:56:48,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:48,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141001545] [2020-10-29 12:56:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:53,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:53,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:56:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:56:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:56:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:53,921 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:56:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:53,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:56:53,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:53,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141001545] [2020-10-29 12:56:53,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:53,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:53,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190613542] [2020-10-29 12:56:53,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:56:53,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:53,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:56:53,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:56:53,974 INFO L87 Difference]: Start difference. First operand 11015 states and 15823 transitions. Second operand 6 states. [2020-10-29 12:56:54,372 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:56:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:56,236 INFO L93 Difference]: Finished difference Result 20473 states and 29820 transitions. [2020-10-29 12:56:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:56:56,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-29 12:56:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:56,248 INFO L225 Difference]: With dead ends: 20473 [2020-10-29 12:56:56,248 INFO L226 Difference]: Without dead ends: 11015 [2020-10-29 12:56:56,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:56:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2020-10-29 12:56:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 11015. [2020-10-29 12:56:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11015 states. [2020-10-29 12:56:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11015 states to 11015 states and 15613 transitions. [2020-10-29 12:56:57,131 INFO L78 Accepts]: Start accepts. Automaton has 11015 states and 15613 transitions. Word has length 113 [2020-10-29 12:56:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:57,131 INFO L481 AbstractCegarLoop]: Abstraction has 11015 states and 15613 transitions. [2020-10-29 12:56:57,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:56:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11015 states and 15613 transitions. [2020-10-29 12:56:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:56:57,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:57,140 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] [2020-10-29 12:56:57,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:56:57,141 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:57,142 INFO L82 PathProgramCache]: Analyzing trace with hash 756048092, now seen corresponding path program 1 times [2020-10-29 12:56:57,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773180574] [2020-10-29 12:56:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:57,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:57:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:57:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:57:02,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:02,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 12:57:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:57:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:02,598 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:57:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:02,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:02,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:02,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:02,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:02,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773180574] [2020-10-29 12:57:02,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:02,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:57:02,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173568484] [2020-10-29 12:57:02,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:57:02,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:02,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:57:02,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:02,646 INFO L87 Difference]: Start difference. First operand 11015 states and 15613 transitions. Second operand 6 states. [2020-10-29 12:57:03,096 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 12:57:04,463 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:06,684 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:07,097 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:08,050 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 12:57:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:08,940 INFO L93 Difference]: Finished difference Result 37833 states and 57805 transitions. [2020-10-29 12:57:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:57:08,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-29 12:57:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:08,989 INFO L225 Difference]: With dead ends: 37833 [2020-10-29 12:57:08,989 INFO L226 Difference]: Without dead ends: 31130 [2020-10-29 12:57:09,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:57:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31130 states. [2020-10-29 12:57:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31130 to 17690. [2020-10-29 12:57:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17690 states. [2020-10-29 12:57:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17690 states to 17690 states and 25783 transitions. [2020-10-29 12:57:10,870 INFO L78 Accepts]: Start accepts. Automaton has 17690 states and 25783 transitions. Word has length 113 [2020-10-29 12:57:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:10,870 INFO L481 AbstractCegarLoop]: Abstraction has 17690 states and 25783 transitions. [2020-10-29 12:57:10,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:57:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17690 states and 25783 transitions. [2020-10-29 12:57:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:57:10,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:10,877 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] [2020-10-29 12:57:10,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:57:10,877 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2109561395, now seen corresponding path program 1 times [2020-10-29 12:57:10,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:10,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959005923] [2020-10-29 12:57:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:16,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:16,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 12:57:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:16,447 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-10-29 12:57:16,980 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:57:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:17,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959005923] [2020-10-29 12:57:17,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:17,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:57:17,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145136177] [2020-10-29 12:57:17,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:57:17,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:17,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:57:17,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:57:17,051 INFO L87 Difference]: Start difference. First operand 17690 states and 25783 transitions. Second operand 11 states. [2020-10-29 12:57:17,466 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 12:57:18,232 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-29 12:57:18,403 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 12:57:18,956 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 12:57:19,244 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-29 12:57:19,434 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 12:57:19,609 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-29 12:57:21,435 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 219 [2020-10-29 12:57:21,839 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:57:22,711 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 214 [2020-10-29 12:57:24,004 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 223 [2020-10-29 12:57:24,452 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 12:57:25,473 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 218 [2020-10-29 12:57:25,886 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:57:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:40,931 INFO L93 Difference]: Finished difference Result 126891 states and 193181 transitions. [2020-10-29 12:57:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:57:40,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-29 12:57:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:41,114 INFO L225 Difference]: With dead ends: 126891 [2020-10-29 12:57:41,114 INFO L226 Difference]: Without dead ends: 113113 [2020-10-29 12:57:41,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:57:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113113 states. [2020-10-29 12:57:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113113 to 18936. [2020-10-29 12:57:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18936 states. [2020-10-29 12:57:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27253 transitions. [2020-10-29 12:57:44,968 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27253 transitions. Word has length 113 [2020-10-29 12:57:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:44,968 INFO L481 AbstractCegarLoop]: Abstraction has 18936 states and 27253 transitions. [2020-10-29 12:57:44,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:57:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27253 transitions. [2020-10-29 12:57:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:57:44,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:44,980 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] [2020-10-29 12:57:44,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:57:44,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:44,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1711256506, now seen corresponding path program 1 times [2020-10-29 12:57:44,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:44,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343811780] [2020-10-29 12:57:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:50,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 12:57:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:51,053 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:57:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:51,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:51,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343811780] [2020-10-29 12:57:51,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:51,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 12:57:51,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758602892] [2020-10-29 12:57:51,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:57:51,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:51,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:57:51,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:57:51,120 INFO L87 Difference]: Start difference. First operand 18936 states and 27253 transitions. Second operand 15 states. [2020-10-29 12:57:51,542 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 12:57:54,949 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 12:58:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:00,290 INFO L93 Difference]: Finished difference Result 42791 states and 63059 transitions. [2020-10-29 12:58:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:58:00,291 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 113 [2020-10-29 12:58:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:00,349 INFO L225 Difference]: With dead ends: 42791 [2020-10-29 12:58:00,349 INFO L226 Difference]: Without dead ends: 33964 [2020-10-29 12:58:00,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:58:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33964 states. [2020-10-29 12:58:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33964 to 19712. [2020-10-29 12:58:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19712 states. [2020-10-29 12:58:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19712 states to 19712 states and 28175 transitions. [2020-10-29 12:58:03,516 INFO L78 Accepts]: Start accepts. Automaton has 19712 states and 28175 transitions. Word has length 113 [2020-10-29 12:58:03,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:03,517 INFO L481 AbstractCegarLoop]: Abstraction has 19712 states and 28175 transitions. [2020-10-29 12:58:03,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:58:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19712 states and 28175 transitions. [2020-10-29 12:58:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 12:58:03,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:03,525 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] [2020-10-29 12:58:03,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:58:03,526 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:03,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1728900479, now seen corresponding path program 1 times [2020-10-29 12:58:03,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:03,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168022184] [2020-10-29 12:58:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:08,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 12:58:08,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4807 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:58:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:08,773 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:58:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:08,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168022184] [2020-10-29 12:58:08,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:08,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:58:08,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622175162] [2020-10-29 12:58:08,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:58:08,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:08,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:58:08,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:08,811 INFO L87 Difference]: Start difference. First operand 19712 states and 28175 transitions. Second operand 5 states. [2020-10-29 12:58:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:12,533 INFO L93 Difference]: Finished difference Result 28863 states and 41397 transitions. [2020-10-29 12:58:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:58:12,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-29 12:58:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:12,556 INFO L225 Difference]: With dead ends: 28863 [2020-10-29 12:58:12,556 INFO L226 Difference]: Without dead ends: 16691 [2020-10-29 12:58:12,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:58:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16691 states. [2020-10-29 12:58:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16691 to 16689. [2020-10-29 12:58:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16689 states. [2020-10-29 12:58:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16689 states to 16689 states and 23789 transitions. [2020-10-29 12:58:15,073 INFO L78 Accepts]: Start accepts. Automaton has 16689 states and 23789 transitions. Word has length 113 [2020-10-29 12:58:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:15,073 INFO L481 AbstractCegarLoop]: Abstraction has 16689 states and 23789 transitions. [2020-10-29 12:58:15,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:58:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 16689 states and 23789 transitions. [2020-10-29 12:58:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 12:58:15,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:15,081 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] [2020-10-29 12:58:15,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:58:15,082 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1545479845, now seen corresponding path program 1 times [2020-10-29 12:58:15,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:15,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158818699] [2020-10-29 12:58:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:15,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:58:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 12:58:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:58:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:16,137 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:58:16,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:16,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:16,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158818699] [2020-10-29 12:58:16,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:16,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:58:16,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185152101] [2020-10-29 12:58:16,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:58:16,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:58:16,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:16,297 INFO L87 Difference]: Start difference. First operand 16689 states and 23789 transitions. Second operand 5 states. [2020-10-29 12:58:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:19,711 INFO L93 Difference]: Finished difference Result 28448 states and 40634 transitions. [2020-10-29 12:58:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:58:19,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 12:58:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:19,728 INFO L225 Difference]: With dead ends: 28448 [2020-10-29 12:58:19,728 INFO L226 Difference]: Without dead ends: 14380 [2020-10-29 12:58:19,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:58:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14380 states. [2020-10-29 12:58:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14380 to 14380. [2020-10-29 12:58:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14380 states. [2020-10-29 12:58:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14380 states to 14380 states and 20466 transitions. [2020-10-29 12:58:21,847 INFO L78 Accepts]: Start accepts. Automaton has 14380 states and 20466 transitions. Word has length 115 [2020-10-29 12:58:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:21,847 INFO L481 AbstractCegarLoop]: Abstraction has 14380 states and 20466 transitions. [2020-10-29 12:58:21,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:58:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14380 states and 20466 transitions. [2020-10-29 12:58:21,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 12:58:21,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:21,855 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] [2020-10-29 12:58:21,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:58:21,855 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash -965931586, now seen corresponding path program 1 times [2020-10-29 12:58:21,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:21,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767451850] [2020-10-29 12:58:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:22,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:25,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 12:58:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:58:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:58:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:27,315 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 12:58:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:27,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:27,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767451850] [2020-10-29 12:58:27,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:27,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:58:27,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767262392] [2020-10-29 12:58:27,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:58:27,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:27,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:58:27,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:27,362 INFO L87 Difference]: Start difference. First operand 14380 states and 20466 transitions. Second operand 5 states. [2020-10-29 12:58:27,757 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 12:58:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:31,606 INFO L93 Difference]: Finished difference Result 23636 states and 33754 transitions. [2020-10-29 12:58:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:58:31,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 12:58:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:31,624 INFO L225 Difference]: With dead ends: 23636 [2020-10-29 12:58:31,624 INFO L226 Difference]: Without dead ends: 14373 [2020-10-29 12:58:31,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:58:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2020-10-29 12:58:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14370. [2020-10-29 12:58:33,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14370 states. [2020-10-29 12:58:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14370 states to 14370 states and 20317 transitions. [2020-10-29 12:58:33,839 INFO L78 Accepts]: Start accepts. Automaton has 14370 states and 20317 transitions. Word has length 116 [2020-10-29 12:58:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:33,840 INFO L481 AbstractCegarLoop]: Abstraction has 14370 states and 20317 transitions. [2020-10-29 12:58:33,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:58:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14370 states and 20317 transitions. [2020-10-29 12:58:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 12:58:33,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:33,845 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] [2020-10-29 12:58:33,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:58:33,845 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2086853722, now seen corresponding path program 1 times [2020-10-29 12:58:33,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:33,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359969581] [2020-10-29 12:58:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:58:33,891 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:58:33,891 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:58:33,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:58:33,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:58:33 BoogieIcfgContainer [2020-10-29 12:58:33,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:58:33,938 INFO L168 Benchmark]: Toolchain (without parser) took 204775.72 ms. Allocated memory was 161.5 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 135.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-10-29 12:58:33,939 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 100.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:58:33,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.48 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 143.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2020-10-29 12:58:33,939 INFO L168 Benchmark]: Boogie Preprocessor took 84.71 ms. Allocated memory is still 161.5 MB. Free memory was 143.5 MB in the beginning and 139.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-29 12:58:33,940 INFO L168 Benchmark]: RCFGBuilder took 1189.19 ms. Allocated memory is still 161.5 MB. Free memory was 139.9 MB in the beginning and 94.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:58:33,940 INFO L168 Benchmark]: TraceAbstraction took 202688.05 ms. Allocated memory was 161.5 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 93.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-10-29 12:58:33,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 100.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 801.48 ms. Allocated memory is still 161.5 MB. Free memory was 135.0 MB in the beginning and 143.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.71 ms. Allocated memory is still 161.5 MB. Free memory was 143.5 MB in the beginning and 139.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1189.19 ms. Allocated memory is still 161.5 MB. Free memory was 139.9 MB in the beginning and 94.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 202688.05 ms. Allocated memory was 161.5 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 93.5 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1131; [L70] int __return_1259; [L71] int __return_1378; [L72] int __tmp_1379_0; [L73] int __return_1487; [L74] int __return_1392; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_char() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_char() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_char() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L1622] COND TRUE !(init__r131 == 0) [L1624] COND TRUE !(ep32 == 0) [L1626] init__tmp = 1 [L137] init__r122 = (_Bool)init__tmp [L138] COND TRUE !(init__r131 == 0) [L140] init__tmp___0 = 1 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND TRUE !(init__r211 == 0) [L145] init__tmp___1 = 1 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L1553] COND TRUE !(init__r211 == 0) [L1555] COND TRUE !(ep13 == 0) [L1557] init__tmp___2 = 1 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L1530] COND TRUE !(init__r321 == 0) [L1532] COND TRUE !(ep21 == 0) [L1534] init__tmp___3 = 1 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND TRUE !(init__r321 == 0) [L160] init__tmp___4 = 1 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE !(init__r122 == 0) [L183] COND TRUE !(init__r132 == 0) [L185] COND TRUE !(init__r212 == 0) [L187] COND TRUE !(init__r232 == 0) [L189] COND TRUE !(init__r312 == 0) [L191] COND TRUE !(init__r322 == 0) [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] init__tmp___5 = 1 [L218] __return_1131 = init__tmp___5 [L219] main__i2 = __return_1131 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] COND FALSE !(!(mode1 == 0)) [L244] COND TRUE ((int)r1) < 2 [L246] COND FALSE !(!(ep12 == 0)) [L257] COND TRUE !(ep13 == 0) [L259] int node1____CPAchecker_TMP_1; [L260] COND TRUE max1 != nomsg [L262] COND TRUE p13_new == nomsg [L264] node1____CPAchecker_TMP_1 = max1 [L266] p13_new = node1____CPAchecker_TMP_1 [L268] mode1 = 1 [L270] COND FALSE !(!(mode2 == 0)) [L276] COND TRUE ((int)r2) < 2 [L278] COND TRUE !(ep21 == 0) [L280] int node2____CPAchecker_TMP_0; [L281] COND TRUE max2 != nomsg [L283] COND TRUE p21_new == nomsg [L285] node2____CPAchecker_TMP_0 = max2 [L287] p21_new = node2____CPAchecker_TMP_0 [L289] COND FALSE !(!(ep23 == 0)) [L300] mode2 = 1 [L302] COND FALSE !(!(mode3 == 0)) [L308] COND TRUE ((int)r3) < 2 [L310] COND FALSE !(!(ep31 == 0)) [L321] COND TRUE !(ep32 == 0) [L323] int node3____CPAchecker_TMP_1; [L324] COND TRUE max3 != nomsg [L326] COND TRUE p32_new == nomsg [L328] node3____CPAchecker_TMP_1 = max3 [L330] p32_new = node3____CPAchecker_TMP_1 [L332] mode3 = 1 [L333] p12_old = p12_new [L334] p12_new = nomsg [L335] p13_old = p13_new [L336] p13_new = nomsg [L337] p21_old = p21_new [L338] p21_new = nomsg [L339] p23_old = p23_new [L340] p23_new = nomsg [L341] p31_old = p31_new [L342] p31_new = nomsg [L343] p32_old = p32_new [L344] p32_new = nomsg [L346] int check__tmp; [L347] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L349] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L351] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L353] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] COND FALSE !(((int)r1) >= 2) [L371] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L373] COND TRUE ((int)r1) < 2 [L375] check__tmp = 1 [L376] __return_1259 = check__tmp [L377] main__c1 = __return_1259 [L379] _Bool __tmp_1; [L380] __tmp_1 = main__c1 [L381] _Bool assert__arg; [L382] assert__arg = __tmp_1 [L383] COND FALSE !(assert__arg == 0) [L389] int main____CPAchecker_TMP_0 = main__i2; [L390] main__i2 = main__i2 + 1 [L391] COND TRUE main__i2 < 6 [L394] COND TRUE !(mode1 == 0) [L396] r1 = (char)(((int)r1) + 1) [L397] COND TRUE !(ep21 == 0) [L399] m1 = p21_old [L400] p21_old = nomsg [L401] COND FALSE !(((int)m1) > ((int)max1)) [L405] COND FALSE !(!(ep31 == 0)) [L413] COND TRUE ((int)r1) == 1 [L415] COND TRUE ((int)max1) == ((int)id1) [L417] st1 = 1 [L419] mode1 = 0 [L421] COND TRUE !(mode2 == 0) [L423] r2 = (char)(((int)r2) + 1) [L424] COND FALSE !(!(ep12 == 0)) [L432] COND TRUE !(ep32 == 0) [L434] m2 = p32_old [L435] p32_old = nomsg [L436] COND TRUE ((int)m2) > ((int)max2) [L438] max2 = m2 [L440] COND FALSE !(((int)r2) == 2) [L446] mode2 = 0 [L448] COND TRUE !(mode3 == 0) [L450] r3 = (char)(((int)r3) + 1) [L451] COND TRUE !(ep13 == 0) [L453] m3 = p13_old [L454] p13_old = nomsg [L455] COND FALSE !(((int)m3) > ((int)max3)) [L459] COND FALSE !(!(ep23 == 0)) [L467] COND FALSE !(((int)r3) == 2) [L473] mode3 = 0 [L474] p12_old = p12_new [L475] p12_new = nomsg [L476] p13_old = p13_new [L477] p13_new = nomsg [L478] p21_old = p21_new [L479] p21_new = nomsg [L480] p23_old = p23_new [L481] p23_new = nomsg [L482] p31_old = p31_new [L483] p31_new = nomsg [L484] p32_old = p32_new [L485] p32_new = nomsg [L487] int check__tmp; [L488] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L490] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L492] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L494] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L1070] check__tmp = 0 [L520] __return_1378 = check__tmp [L521] main__c1 = __return_1378 [L522] __tmp_1379_0 = main____CPAchecker_TMP_0 [L524] main____CPAchecker_TMP_0 = __tmp_1379_0 [L526] _Bool __tmp_2; [L527] __tmp_2 = main__c1 [L528] _Bool assert__arg; [L529] assert__arg = __tmp_2 [L530] COND TRUE assert__arg == 0 [L532] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 202.5s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 82.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7724 SDtfs, 13836 SDslu, 13084 SDs, 0 SdLazy, 10567 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19712occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 121922 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 95.3s InterpolantComputationTime, 2054 NumberOfCodeBlocks, 2054 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1919 ConstructedInterpolants, 0 QuantifiedInterpolants, 1679084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...