./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:24:42,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:24:42,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:24:42,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:24:42,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:24:42,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:24:42,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:24:42,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:24:42,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:24:42,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:24:42,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:24:42,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:24:42,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:24:42,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:24:42,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:24:42,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:24:42,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:24:42,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:24:42,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:24:42,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:24:42,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:24:42,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:24:42,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:24:42,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:24:42,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:24:42,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:24:42,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:24:42,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:24:42,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:24:42,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:24:42,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:24:42,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:24:42,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:24:42,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:24:42,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:24:42,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:24:42,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:24:42,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:24:42,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:24:42,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:24:42,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:24:42,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:24:42,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:24:42,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:24:42,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:24:42,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:24:42,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:24:42,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:24:42,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:24:42,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:24:42,820 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:24:42,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:24:42,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:24:42,821 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:24:42,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:24:42,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:24:42,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:24:42,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:24:42,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:24:42,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:24:42,824 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a [2021-12-15 11:24:43,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:24:43,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:24:43,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:24:43,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:24:43,074 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:24:43,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:24:43,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440b9cbe1/5285fb0904964154bfb1b53bfc09b730/FLAG7bc234397 [2021-12-15 11:24:43,569 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:24:43,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:24:43,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440b9cbe1/5285fb0904964154bfb1b53bfc09b730/FLAG7bc234397 [2021-12-15 11:24:43,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/440b9cbe1/5285fb0904964154bfb1b53bfc09b730 [2021-12-15 11:24:43,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:24:43,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:24:43,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:24:43,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:24:43,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:24:43,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:24:43" (1/1) ... [2021-12-15 11:24:43,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24904a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:43, skipping insertion in model container [2021-12-15 11:24:43,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:24:43" (1/1) ... [2021-12-15 11:24:43,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:24:43,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:24:44,102 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2021-12-15 11:24:44,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2021-12-15 11:24:44,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2021-12-15 11:24:44,150 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2021-12-15 11:24:44,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2021-12-15 11:24:44,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:24:44,319 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:24:44,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2021-12-15 11:24:44,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2021-12-15 11:24:44,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2021-12-15 11:24:44,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2021-12-15 11:24:44,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2021-12-15 11:24:44,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:24:44,597 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:24:44,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44 WrapperNode [2021-12-15 11:24:44,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:24:44,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:24:44,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:24:44,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:24:44,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,681 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1565 [2021-12-15 11:24:44,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:24:44,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:24:44,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:24:44,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:24:44,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:24:44,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:24:44,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:24:44,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:24:44,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (1/1) ... [2021-12-15 11:24:44,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:24:44,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:24:44,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:24:44,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:24:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:24:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:24:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:24:44,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:24:45,007 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:24:45,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:24:45,734 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:24:45,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:24:45,748 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:24:45,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:24:45 BoogieIcfgContainer [2021-12-15 11:24:45,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:24:45,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:24:45,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:24:45,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:24:45,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:24:43" (1/3) ... [2021-12-15 11:24:45,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c980d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:24:45, skipping insertion in model container [2021-12-15 11:24:45,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:24:44" (2/3) ... [2021-12-15 11:24:45,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c980d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:24:45, skipping insertion in model container [2021-12-15 11:24:45,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:24:45" (3/3) ... [2021-12-15 11:24:45,760 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-15 11:24:45,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:24:45,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-15 11:24:45,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:24:45,811 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:24:45,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-15 11:24:45,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 382 states have (on average 1.824607329842932) internal successors, (697), 387 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-15 11:24:45,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:45,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:45,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1860790591, now seen corresponding path program 1 times [2021-12-15 11:24:45,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:45,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825684840] [2021-12-15 11:24:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:45,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:46,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:46,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825684840] [2021-12-15 11:24:46,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825684840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:46,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:46,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:46,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664486694] [2021-12-15 11:24:46,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:46,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:46,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:46,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:46,274 INFO L87 Difference]: Start difference. First operand has 388 states, 382 states have (on average 1.824607329842932) internal successors, (697), 387 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:46,449 INFO L93 Difference]: Finished difference Result 717 states and 1276 transitions. [2021-12-15 11:24:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-15 11:24:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:46,468 INFO L225 Difference]: With dead ends: 717 [2021-12-15 11:24:46,469 INFO L226 Difference]: Without dead ends: 589 [2021-12-15 11:24:46,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:46,478 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 424 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:46,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1246 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:24:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-12-15 11:24:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 587. [2021-12-15 11:24:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 582 states have (on average 1.4793814432989691) internal successors, (861), 586 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 861 transitions. [2021-12-15 11:24:46,550 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 861 transitions. Word has length 141 [2021-12-15 11:24:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:46,550 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 861 transitions. [2021-12-15 11:24:46,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 861 transitions. [2021-12-15 11:24:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-15 11:24:46,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:46,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:46,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:24:46,555 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1860359615, now seen corresponding path program 1 times [2021-12-15 11:24:46,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:46,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275787830] [2021-12-15 11:24:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:46,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:46,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:46,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275787830] [2021-12-15 11:24:46,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275787830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:46,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:46,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:24:46,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903417141] [2021-12-15 11:24:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:46,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:24:46,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:24:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:24:46,823 INFO L87 Difference]: Start difference. First operand 587 states and 861 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:46,943 INFO L93 Difference]: Finished difference Result 1719 states and 2514 transitions. [2021-12-15 11:24:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-12-15 11:24:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:46,949 INFO L225 Difference]: With dead ends: 1719 [2021-12-15 11:24:46,949 INFO L226 Difference]: Without dead ends: 1141 [2021-12-15 11:24:46,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:46,954 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 1099 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:46,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 1469 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-12-15 11:24:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1103. [2021-12-15 11:24:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1098 states have (on average 1.4681238615664844) internal successors, (1612), 1102 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1612 transitions. [2021-12-15 11:24:46,986 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1612 transitions. Word has length 141 [2021-12-15 11:24:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:46,986 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 1612 transitions. [2021-12-15 11:24:46,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1612 transitions. [2021-12-15 11:24:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-15 11:24:46,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:46,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:46,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:24:46,990 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:46,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1839649003, now seen corresponding path program 1 times [2021-12-15 11:24:46,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117077090] [2021-12-15 11:24:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:46,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:47,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117077090] [2021-12-15 11:24:47,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117077090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:47,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:47,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:47,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283601074] [2021-12-15 11:24:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:47,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:47,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:47,025 INFO L87 Difference]: Start difference. First operand 1103 states and 1612 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:47,078 INFO L93 Difference]: Finished difference Result 3271 states and 4774 transitions. [2021-12-15 11:24:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-12-15 11:24:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:47,085 INFO L225 Difference]: With dead ends: 3271 [2021-12-15 11:24:47,085 INFO L226 Difference]: Without dead ends: 2196 [2021-12-15 11:24:47,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:47,088 INFO L933 BasicCegarLoop]: 1088 mSDtfsCounter, 540 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:47,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1630 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-12-15 11:24:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1105. [2021-12-15 11:24:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1100 states have (on average 1.4672727272727273) internal successors, (1614), 1104 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1614 transitions. [2021-12-15 11:24:47,130 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1614 transitions. Word has length 142 [2021-12-15 11:24:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:47,130 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1614 transitions. [2021-12-15 11:24:47,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1614 transitions. [2021-12-15 11:24:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-15 11:24:47,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:47,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:47,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:24:47,133 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash 734467803, now seen corresponding path program 1 times [2021-12-15 11:24:47,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:47,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909994118] [2021-12-15 11:24:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:47,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:47,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:47,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909994118] [2021-12-15 11:24:47,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909994118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:47,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:47,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945918485] [2021-12-15 11:24:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:47,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:47,205 INFO L87 Difference]: Start difference. First operand 1105 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:47,289 INFO L93 Difference]: Finished difference Result 3075 states and 4501 transitions. [2021-12-15 11:24:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-12-15 11:24:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:47,297 INFO L225 Difference]: With dead ends: 3075 [2021-12-15 11:24:47,297 INFO L226 Difference]: Without dead ends: 2146 [2021-12-15 11:24:47,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:47,300 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 478 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:47,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1520 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-12-15 11:24:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2108. [2021-12-15 11:24:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2103 states have (on average 1.4550641940085591) internal successors, (3060), 2107 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3060 transitions. [2021-12-15 11:24:47,378 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3060 transitions. Word has length 143 [2021-12-15 11:24:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:47,378 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 3060 transitions. [2021-12-15 11:24:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3060 transitions. [2021-12-15 11:24:47,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-15 11:24:47,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:47,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:47,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:24:47,382 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1947336930, now seen corresponding path program 1 times [2021-12-15 11:24:47,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:47,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933006512] [2021-12-15 11:24:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:47,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:47,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:47,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933006512] [2021-12-15 11:24:47,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933006512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:47,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:47,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:24:47,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650239606] [2021-12-15 11:24:47,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:47,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:24:47,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:24:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:47,519 INFO L87 Difference]: Start difference. First operand 2108 states and 3060 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:47,693 INFO L93 Difference]: Finished difference Result 6002 states and 8697 transitions. [2021-12-15 11:24:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-12-15 11:24:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:47,706 INFO L225 Difference]: With dead ends: 6002 [2021-12-15 11:24:47,707 INFO L226 Difference]: Without dead ends: 3908 [2021-12-15 11:24:47,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:47,714 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1306 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:47,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1769 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:24:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-12-15 11:24:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3878. [2021-12-15 11:24:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3873 states have (on average 1.4366124451329718) internal successors, (5564), 3877 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5564 transitions. [2021-12-15 11:24:47,886 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5564 transitions. Word has length 143 [2021-12-15 11:24:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:47,887 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 5564 transitions. [2021-12-15 11:24:47,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5564 transitions. [2021-12-15 11:24:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-15 11:24:47,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:47,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:47,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:24:47,897 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1237819550, now seen corresponding path program 1 times [2021-12-15 11:24:47,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:47,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290488419] [2021-12-15 11:24:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:47,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:47,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290488419] [2021-12-15 11:24:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290488419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:47,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:47,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:24:47,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629106101] [2021-12-15 11:24:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:47,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:24:47,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:24:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:24:47,988 INFO L87 Difference]: Start difference. First operand 3878 states and 5564 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:48,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:48,312 INFO L93 Difference]: Finished difference Result 11345 states and 16231 transitions. [2021-12-15 11:24:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:48,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-12-15 11:24:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:48,336 INFO L225 Difference]: With dead ends: 11345 [2021-12-15 11:24:48,337 INFO L226 Difference]: Without dead ends: 7523 [2021-12-15 11:24:48,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:48,345 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 1085 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:48,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 1460 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2021-12-15 11:24:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7479. [2021-12-15 11:24:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7474 states have (on average 1.420925876371421) internal successors, (10620), 7478 states have internal predecessors, (10620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 10620 transitions. [2021-12-15 11:24:48,788 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 10620 transitions. Word has length 143 [2021-12-15 11:24:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:48,789 INFO L470 AbstractCegarLoop]: Abstraction has 7479 states and 10620 transitions. [2021-12-15 11:24:48,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 10620 transitions. [2021-12-15 11:24:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-15 11:24:48,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:48,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:48,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:24:48,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1470261354, now seen corresponding path program 1 times [2021-12-15 11:24:48,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:48,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403905951] [2021-12-15 11:24:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:48,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:48,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:48,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403905951] [2021-12-15 11:24:48,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403905951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:48,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:48,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:48,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227904512] [2021-12-15 11:24:48,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:48,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:48,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:48,845 INFO L87 Difference]: Start difference. First operand 7479 states and 10620 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:49,302 INFO L93 Difference]: Finished difference Result 22285 states and 31627 transitions. [2021-12-15 11:24:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-12-15 11:24:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:49,350 INFO L225 Difference]: With dead ends: 22285 [2021-12-15 11:24:49,350 INFO L226 Difference]: Without dead ends: 14897 [2021-12-15 11:24:49,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:49,361 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 526 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:49,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1616 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2021-12-15 11:24:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 7489. [2021-12-15 11:24:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7489 states, 7484 states have (on average 1.4203634420096205) internal successors, (10630), 7488 states have internal predecessors, (10630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 10630 transitions. [2021-12-15 11:24:49,706 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 10630 transitions. Word has length 144 [2021-12-15 11:24:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:49,707 INFO L470 AbstractCegarLoop]: Abstraction has 7489 states and 10630 transitions. [2021-12-15 11:24:49,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 10630 transitions. [2021-12-15 11:24:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-15 11:24:49,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:49,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:49,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:24:49,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash -671861994, now seen corresponding path program 1 times [2021-12-15 11:24:49,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:49,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926241553] [2021-12-15 11:24:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:49,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:49,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:49,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926241553] [2021-12-15 11:24:49,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926241553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:49,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:49,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:49,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159759126] [2021-12-15 11:24:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:49,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:49,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:49,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:49,754 INFO L87 Difference]: Start difference. First operand 7489 states and 10630 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:50,194 INFO L93 Difference]: Finished difference Result 21181 states and 30129 transitions. [2021-12-15 11:24:50,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:50,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-12-15 11:24:50,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:50,225 INFO L225 Difference]: With dead ends: 21181 [2021-12-15 11:24:50,225 INFO L226 Difference]: Without dead ends: 14533 [2021-12-15 11:24:50,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:50,238 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 471 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:50,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1541 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2021-12-15 11:24:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 14489. [2021-12-15 11:24:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14489 states, 14484 states have (on average 1.4052057442695387) internal successors, (20353), 14488 states have internal predecessors, (20353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14489 states to 14489 states and 20353 transitions. [2021-12-15 11:24:50,782 INFO L78 Accepts]: Start accepts. Automaton has 14489 states and 20353 transitions. Word has length 145 [2021-12-15 11:24:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:50,782 INFO L470 AbstractCegarLoop]: Abstraction has 14489 states and 20353 transitions. [2021-12-15 11:24:50,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14489 states and 20353 transitions. [2021-12-15 11:24:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-15 11:24:50,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:50,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:50,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:24:50,800 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -720915239, now seen corresponding path program 1 times [2021-12-15 11:24:50,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829607188] [2021-12-15 11:24:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:50,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:50,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:50,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829607188] [2021-12-15 11:24:50,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829607188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:50,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:50,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 11:24:50,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449269281] [2021-12-15 11:24:50,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:50,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:24:50,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:24:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:50,909 INFO L87 Difference]: Start difference. First operand 14489 states and 20353 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:51,838 INFO L93 Difference]: Finished difference Result 38834 states and 54380 transitions. [2021-12-15 11:24:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-12-15 11:24:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:51,885 INFO L225 Difference]: With dead ends: 38834 [2021-12-15 11:24:51,885 INFO L226 Difference]: Without dead ends: 24423 [2021-12-15 11:24:51,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:51,905 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 1599 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:51,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 1424 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:24:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2021-12-15 11:24:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24397. [2021-12-15 11:24:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24397 states, 24392 states have (on average 1.3795096753033782) internal successors, (33649), 24396 states have internal predecessors, (33649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24397 states to 24397 states and 33649 transitions. [2021-12-15 11:24:52,773 INFO L78 Accepts]: Start accepts. Automaton has 24397 states and 33649 transitions. Word has length 145 [2021-12-15 11:24:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:52,773 INFO L470 AbstractCegarLoop]: Abstraction has 24397 states and 33649 transitions. [2021-12-15 11:24:52,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 24397 states and 33649 transitions. [2021-12-15 11:24:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-15 11:24:52,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:52,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:52,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:24:52,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 909534973, now seen corresponding path program 1 times [2021-12-15 11:24:52,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:52,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941318317] [2021-12-15 11:24:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:52,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:52,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941318317] [2021-12-15 11:24:52,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941318317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:52,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:52,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:24:52,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128739711] [2021-12-15 11:24:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:52,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:24:52,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:24:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:24:52,893 INFO L87 Difference]: Start difference. First operand 24397 states and 33649 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:53,644 INFO L93 Difference]: Finished difference Result 49325 states and 67865 transitions. [2021-12-15 11:24:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-12-15 11:24:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:53,696 INFO L225 Difference]: With dead ends: 49325 [2021-12-15 11:24:53,696 INFO L226 Difference]: Without dead ends: 25322 [2021-12-15 11:24:53,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:53,727 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 1074 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:53,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 1444 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25322 states. [2021-12-15 11:24:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25322 to 24863. [2021-12-15 11:24:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24863 states, 24858 states have (on average 1.374285944162845) internal successors, (34162), 24862 states have internal predecessors, (34162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24863 states to 24863 states and 34162 transitions. [2021-12-15 11:24:54,780 INFO L78 Accepts]: Start accepts. Automaton has 24863 states and 34162 transitions. Word has length 145 [2021-12-15 11:24:54,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:54,780 INFO L470 AbstractCegarLoop]: Abstraction has 24863 states and 34162 transitions. [2021-12-15 11:24:54,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24863 states and 34162 transitions. [2021-12-15 11:24:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-15 11:24:54,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:54,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:54,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:24:54,816 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash -497015959, now seen corresponding path program 1 times [2021-12-15 11:24:54,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:54,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100573491] [2021-12-15 11:24:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:54,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:54,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:54,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100573491] [2021-12-15 11:24:54,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100573491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:54,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:54,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:24:54,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662571811] [2021-12-15 11:24:54,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:54,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:24:54,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:24:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:54,847 INFO L87 Difference]: Start difference. First operand 24863 states and 34162 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:56,309 INFO L93 Difference]: Finished difference Result 72633 states and 100090 transitions. [2021-12-15 11:24:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:24:56,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-12-15 11:24:56,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:56,402 INFO L225 Difference]: With dead ends: 72633 [2021-12-15 11:24:56,402 INFO L226 Difference]: Without dead ends: 49312 [2021-12-15 11:24:56,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:24:56,437 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 512 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:56,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1170 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49312 states. [2021-12-15 11:24:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49312 to 24903. [2021-12-15 11:24:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24903 states, 24898 states have (on average 1.37368463330388) internal successors, (34202), 24902 states have internal predecessors, (34202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24903 states to 24903 states and 34202 transitions. [2021-12-15 11:24:57,753 INFO L78 Accepts]: Start accepts. Automaton has 24903 states and 34202 transitions. Word has length 146 [2021-12-15 11:24:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:57,753 INFO L470 AbstractCegarLoop]: Abstraction has 24903 states and 34202 transitions. [2021-12-15 11:24:57,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 24903 states and 34202 transitions. [2021-12-15 11:24:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-15 11:24:57,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:57,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:57,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:24:57,778 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:57,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1442584356, now seen corresponding path program 1 times [2021-12-15 11:24:57,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:57,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060665103] [2021-12-15 11:24:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:57,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:57,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:57,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060665103] [2021-12-15 11:24:57,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060665103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:57,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:57,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:24:57,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966243865] [2021-12-15 11:24:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:57,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:24:57,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:57,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:24:57,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:24:57,867 INFO L87 Difference]: Start difference. First operand 24903 states and 34202 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:24:58,376 INFO L93 Difference]: Finished difference Result 40404 states and 55585 transitions. [2021-12-15 11:24:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:24:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-12-15 11:24:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:24:58,404 INFO L225 Difference]: With dead ends: 40404 [2021-12-15 11:24:58,404 INFO L226 Difference]: Without dead ends: 16484 [2021-12-15 11:24:58,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:24:58,426 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 65 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:24:58,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1685 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:24:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16484 states. [2021-12-15 11:24:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16484 to 16484. [2021-12-15 11:24:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16484 states, 16479 states have (on average 1.3683475939073972) internal successors, (22549), 16483 states have internal predecessors, (22549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16484 states to 16484 states and 22549 transitions. [2021-12-15 11:24:59,195 INFO L78 Accepts]: Start accepts. Automaton has 16484 states and 22549 transitions. Word has length 147 [2021-12-15 11:24:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:24:59,196 INFO L470 AbstractCegarLoop]: Abstraction has 16484 states and 22549 transitions. [2021-12-15 11:24:59,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:24:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 16484 states and 22549 transitions. [2021-12-15 11:24:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-15 11:24:59,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:24:59,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:24:59,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:24:59,210 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:24:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:24:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1557306087, now seen corresponding path program 1 times [2021-12-15 11:24:59,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:24:59,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591440809] [2021-12-15 11:24:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:24:59,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:24:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:24:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:24:59,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:24:59,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591440809] [2021-12-15 11:24:59,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591440809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:24:59,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:24:59,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:24:59,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293651604] [2021-12-15 11:24:59,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:24:59,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:24:59,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:24:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:24:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:24:59,304 INFO L87 Difference]: Start difference. First operand 16484 states and 22549 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:00,392 INFO L93 Difference]: Finished difference Result 32605 states and 46325 transitions. [2021-12-15 11:25:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:25:00,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-12-15 11:25:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:00,433 INFO L225 Difference]: With dead ends: 32605 [2021-12-15 11:25:00,433 INFO L226 Difference]: Without dead ends: 26686 [2021-12-15 11:25:00,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:25:00,446 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 970 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:00,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 945 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:25:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2021-12-15 11:25:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 26684. [2021-12-15 11:25:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26684 states, 26679 states have (on average 1.3784999437760035) internal successors, (36777), 26683 states have internal predecessors, (36777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26684 states to 26684 states and 36777 transitions. [2021-12-15 11:25:01,595 INFO L78 Accepts]: Start accepts. Automaton has 26684 states and 36777 transitions. Word has length 155 [2021-12-15 11:25:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:01,595 INFO L470 AbstractCegarLoop]: Abstraction has 26684 states and 36777 transitions. [2021-12-15 11:25:01,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 26684 states and 36777 transitions. [2021-12-15 11:25:01,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-15 11:25:01,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:01,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:01,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:25:01,616 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:01,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash 296784743, now seen corresponding path program 1 times [2021-12-15 11:25:01,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:01,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428133665] [2021-12-15 11:25:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:01,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:01,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:01,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428133665] [2021-12-15 11:25:01,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428133665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:01,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:01,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:25:01,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521090375] [2021-12-15 11:25:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:01,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:25:01,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:25:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:25:01,690 INFO L87 Difference]: Start difference. First operand 26684 states and 36777 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:02,512 INFO L93 Difference]: Finished difference Result 44294 states and 61254 transitions. [2021-12-15 11:25:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:25:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-12-15 11:25:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:02,545 INFO L225 Difference]: With dead ends: 44294 [2021-12-15 11:25:02,546 INFO L226 Difference]: Without dead ends: 24301 [2021-12-15 11:25:02,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:25:02,561 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 53 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:02,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1670 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:25:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2021-12-15 11:25:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 24301. [2021-12-15 11:25:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24301 states, 24296 states have (on average 1.3827790582811985) internal successors, (33596), 24300 states have internal predecessors, (33596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24301 states to 24301 states and 33596 transitions. [2021-12-15 11:25:03,618 INFO L78 Accepts]: Start accepts. Automaton has 24301 states and 33596 transitions. Word has length 155 [2021-12-15 11:25:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:03,618 INFO L470 AbstractCegarLoop]: Abstraction has 24301 states and 33596 transitions. [2021-12-15 11:25:03,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 24301 states and 33596 transitions. [2021-12-15 11:25:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 11:25:03,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:03,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:03,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:25:03,650 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1163062228, now seen corresponding path program 1 times [2021-12-15 11:25:03,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:03,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227755467] [2021-12-15 11:25:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:03,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:03,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227755467] [2021-12-15 11:25:03,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227755467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:03,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:03,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:25:03,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207353314] [2021-12-15 11:25:03,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:03,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:25:03,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:03,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:25:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:25:03,761 INFO L87 Difference]: Start difference. First operand 24301 states and 33596 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:05,518 INFO L93 Difference]: Finished difference Result 68381 states and 95160 transitions. [2021-12-15 11:25:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:25:05,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-12-15 11:25:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:05,597 INFO L225 Difference]: With dead ends: 68381 [2021-12-15 11:25:05,597 INFO L226 Difference]: Without dead ends: 47183 [2021-12-15 11:25:05,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:25:05,623 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 457 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:05,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 875 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:25:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47183 states. [2021-12-15 11:25:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47183 to 47129. [2021-12-15 11:25:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47129 states, 47124 states have (on average 1.3745861981156098) internal successors, (64776), 47128 states have internal predecessors, (64776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47129 states to 47129 states and 64776 transitions. [2021-12-15 11:25:07,837 INFO L78 Accepts]: Start accepts. Automaton has 47129 states and 64776 transitions. Word has length 161 [2021-12-15 11:25:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:07,837 INFO L470 AbstractCegarLoop]: Abstraction has 47129 states and 64776 transitions. [2021-12-15 11:25:07,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 47129 states and 64776 transitions. [2021-12-15 11:25:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 11:25:08,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:08,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:08,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:25:08,068 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:08,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1593816879, now seen corresponding path program 1 times [2021-12-15 11:25:08,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:08,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079844575] [2021-12-15 11:25:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:08,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:08,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:08,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079844575] [2021-12-15 11:25:08,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079844575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:08,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:08,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-15 11:25:08,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719285085] [2021-12-15 11:25:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:08,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:25:08,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:25:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:25:08,233 INFO L87 Difference]: Start difference. First operand 47129 states and 64776 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:10,056 INFO L93 Difference]: Finished difference Result 61353 states and 87171 transitions. [2021-12-15 11:25:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:25:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-12-15 11:25:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:10,120 INFO L225 Difference]: With dead ends: 61353 [2021-12-15 11:25:10,120 INFO L226 Difference]: Without dead ends: 42651 [2021-12-15 11:25:10,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:25:10,151 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 820 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:10,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 3194 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:25:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42651 states. [2021-12-15 11:25:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42651 to 42649. [2021-12-15 11:25:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42649 states, 42644 states have (on average 1.3445033298940061) internal successors, (57335), 42648 states have internal predecessors, (57335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42649 states to 42649 states and 57335 transitions. [2021-12-15 11:25:11,976 INFO L78 Accepts]: Start accepts. Automaton has 42649 states and 57335 transitions. Word has length 161 [2021-12-15 11:25:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:11,976 INFO L470 AbstractCegarLoop]: Abstraction has 42649 states and 57335 transitions. [2021-12-15 11:25:11,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 42649 states and 57335 transitions. [2021-12-15 11:25:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-15 11:25:12,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:12,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:12,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:25:12,016 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 554982836, now seen corresponding path program 1 times [2021-12-15 11:25:12,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:12,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55464768] [2021-12-15 11:25:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:12,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:12,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55464768] [2021-12-15 11:25:12,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55464768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:12,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:12,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:25:12,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919060170] [2021-12-15 11:25:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:12,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:25:12,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:25:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:25:12,103 INFO L87 Difference]: Start difference. First operand 42649 states and 57335 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:13,646 INFO L93 Difference]: Finished difference Result 71323 states and 95769 transitions. [2021-12-15 11:25:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:25:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-12-15 11:25:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:13,693 INFO L225 Difference]: With dead ends: 71323 [2021-12-15 11:25:13,693 INFO L226 Difference]: Without dead ends: 28744 [2021-12-15 11:25:13,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:25:13,735 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 43 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:13,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1654 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:25:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28744 states. [2021-12-15 11:25:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28744 to 28744. [2021-12-15 11:25:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28744 states, 28739 states have (on average 1.3403389122794809) internal successors, (38520), 28743 states have internal predecessors, (38520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 38520 transitions. [2021-12-15 11:25:15,091 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 38520 transitions. Word has length 161 [2021-12-15 11:25:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:15,091 INFO L470 AbstractCegarLoop]: Abstraction has 28744 states and 38520 transitions. [2021-12-15 11:25:15,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 38520 transitions. [2021-12-15 11:25:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-15 11:25:15,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:15,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:15,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 11:25:15,113 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash 414006733, now seen corresponding path program 1 times [2021-12-15 11:25:15,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205083268] [2021-12-15 11:25:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:15,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:15,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:15,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205083268] [2021-12-15 11:25:15,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205083268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:15,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:15,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:25:15,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531392203] [2021-12-15 11:25:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:15,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:25:15,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:25:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:25:15,196 INFO L87 Difference]: Start difference. First operand 28744 states and 38520 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:16,734 INFO L93 Difference]: Finished difference Result 56421 states and 75788 transitions. [2021-12-15 11:25:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:25:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-12-15 11:25:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:16,773 INFO L225 Difference]: With dead ends: 56421 [2021-12-15 11:25:16,773 INFO L226 Difference]: Without dead ends: 28744 [2021-12-15 11:25:16,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:25:16,800 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1436 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:16,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 492 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:25:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28744 states. [2021-12-15 11:25:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28744 to 28744. [2021-12-15 11:25:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28744 states, 28739 states have (on average 1.3234280942273566) internal successors, (38034), 28743 states have internal predecessors, (38034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 38034 transitions. [2021-12-15 11:25:18,191 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 38034 transitions. Word has length 169 [2021-12-15 11:25:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:25:18,192 INFO L470 AbstractCegarLoop]: Abstraction has 28744 states and 38034 transitions. [2021-12-15 11:25:18,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 38034 transitions. [2021-12-15 11:25:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-15 11:25:18,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:25:18,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:25:18,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 11:25:18,213 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-15 11:25:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:25:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1444044968, now seen corresponding path program 1 times [2021-12-15 11:25:18,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:25:18,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379705473] [2021-12-15 11:25:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:25:18,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:25:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:25:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:25:18,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:25:18,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379705473] [2021-12-15 11:25:18,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379705473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:25:18,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:25:18,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:25:18,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424100767] [2021-12-15 11:25:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:25:18,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:25:18,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:25:18,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:25:18,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:25:18,307 INFO L87 Difference]: Start difference. First operand 28744 states and 38034 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:25:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:25:20,333 INFO L93 Difference]: Finished difference Result 52662 states and 71235 transitions. [2021-12-15 11:25:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:25:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-12-15 11:25:20,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:25:20,395 INFO L225 Difference]: With dead ends: 52662 [2021-12-15 11:25:20,395 INFO L226 Difference]: Without dead ends: 41231 [2021-12-15 11:25:20,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:25:20,416 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 917 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:25:20,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 934 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:25:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41231 states.