./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.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_lcr-var-start-time.4.1.ufo.BOUNDED-8.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 afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:28:41,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:28:41,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:28:41,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:28:41,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:28:41,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:28:41,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:28:41,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:28:41,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:28:41,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:28:41,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:28:41,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:28:41,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:28:41,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:28:41,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:28:41,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:28:41,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:28:41,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:28:41,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:28:41,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:28:41,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:28:41,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:28:41,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:28:41,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:28:41,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:28:41,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:28:41,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:28:41,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:28:41,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:28:41,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:28:41,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:28:41,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:28:41,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:28:41,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:28:41,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:28:41,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:28:41,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:28:41,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:28:41,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:28:41,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:28:41,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:28:41,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:28:41,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:28:41,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:28:41,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:28:41,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:28:41,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:28:41,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:28:41,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:28:41,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:28:41,832 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:28:41,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:28:41,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:28:41,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:28:41,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:28:41,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:28:41,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:28:41,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:28:41,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:28:41,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:28:41,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:28:41,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:28:41,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:28:41,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:28:41,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:28:41,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 [2021-12-15 11:28:42,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:28:42,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:28:42,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:28:42,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:28:42,055 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:28:42,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-15 11:28:42,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a895bc21c/fd0994fcbc7f44fbb10d2a4684163f4b/FLAG0f259d98a [2021-12-15 11:28:42,706 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:28:42,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-15 11:28:42,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a895bc21c/fd0994fcbc7f44fbb10d2a4684163f4b/FLAG0f259d98a [2021-12-15 11:28:43,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a895bc21c/fd0994fcbc7f44fbb10d2a4684163f4b [2021-12-15 11:28:43,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:28:43,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:28:43,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:28:43,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:28:43,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:28:43,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:28:43" (1/1) ... [2021-12-15 11:28:43,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a4dbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:43, skipping insertion in model container [2021-12-15 11:28:43,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:28:43" (1/1) ... [2021-12-15 11:28:43,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:28:43,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:28:43,471 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-12-15 11:28:43,512 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-12-15 11:28:43,521 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-12-15 11:28:43,527 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-12-15 11:28:43,540 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-12-15 11:28:43,545 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-12-15 11:28:43,555 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-12-15 11:28:43,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:28:43,890 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:28:43,922 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2021-12-15 11:28:43,939 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2021-12-15 11:28:43,944 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2021-12-15 11:28:43,946 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2021-12-15 11:28:43,951 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2021-12-15 11:28:43,953 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2021-12-15 11:28:43,957 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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2021-12-15 11:28:44,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:28:44,138 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:28:44,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44 WrapperNode [2021-12-15 11:28:44,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:28:44,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:28:44,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:28:44,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:28:44,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,265 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7010 [2021-12-15 11:28:44,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:28:44,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:28:44,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:28:44,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:28:44,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:28:44,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:28:44,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:28:44,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:28:44,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (1/1) ... [2021-12-15 11:28:44,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:28:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:28:44,410 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 11:28:44,429 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 11:28:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:28:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:28:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:28:44,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:28:44,795 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:28:44,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:28:46,622 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:28:46,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:28:46,642 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:28:46,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:28:46 BoogieIcfgContainer [2021-12-15 11:28:46,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:28:46,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:28:46,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:28:46,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:28:46,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:28:43" (1/3) ... [2021-12-15 11:28:46,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152f2c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:28:46, skipping insertion in model container [2021-12-15 11:28:46,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:28:44" (2/3) ... [2021-12-15 11:28:46,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152f2c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:28:46, skipping insertion in model container [2021-12-15 11:28:46,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:28:46" (3/3) ... [2021-12-15 11:28:46,654 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-15 11:28:46,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:28:46,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-15 11:28:46,713 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:28:46,721 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 11:28:46,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-15 11:28:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 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 11:28:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 11:28:46,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:46,803 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] [2021-12-15 11:28:46,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2021-12-15 11:28:46,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:46,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338915761] [2021-12-15 11:28:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:46,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:47,088 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 11:28:47,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338915761] [2021-12-15 11:28:47,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338915761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:47,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:47,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:47,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700901673] [2021-12-15 11:28:47,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:47,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:47,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:47,162 INFO L87 Difference]: Start difference. First operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 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 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 11:28:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:47,407 INFO L93 Difference]: Finished difference Result 1465 states and 2651 transitions. [2021-12-15 11:28:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:47,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-12-15 11:28:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:47,429 INFO L225 Difference]: With dead ends: 1465 [2021-12-15 11:28:47,430 INFO L226 Difference]: Without dead ends: 1288 [2021-12-15 11:28:47,434 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 11:28:47,440 INFO L933 BasicCegarLoop]: 2055 mSDtfsCounter, 969 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:47,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 3330 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:28:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-12-15 11:28:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1280. [2021-12-15 11:28:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1273 states have (on average 1.3165750196386488) internal successors, (1676), 1279 states have internal predecessors, (1676), 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 11:28:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1676 transitions. [2021-12-15 11:28:47,535 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1676 transitions. Word has length 64 [2021-12-15 11:28:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:47,537 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1676 transitions. [2021-12-15 11:28:47,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 11:28:47,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1676 transitions. [2021-12-15 11:28:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 11:28:47,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:47,543 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] [2021-12-15 11:28:47,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:28:47,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1978887998, now seen corresponding path program 1 times [2021-12-15 11:28:47,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:47,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151688899] [2021-12-15 11:28:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:47,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:47,679 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 11:28:47,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:47,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151688899] [2021-12-15 11:28:47,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151688899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:47,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:47,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:47,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149873243] [2021-12-15 11:28:47,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:47,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:47,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:47,683 INFO L87 Difference]: Start difference. First operand 1280 states and 1676 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 11:28:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:47,799 INFO L93 Difference]: Finished difference Result 1930 states and 2622 transitions. [2021-12-15 11:28:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:47,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-12-15 11:28:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:47,805 INFO L225 Difference]: With dead ends: 1930 [2021-12-15 11:28:47,805 INFO L226 Difference]: Without dead ends: 1576 [2021-12-15 11:28:47,806 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 11:28:47,807 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 717 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:47,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 2315 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 11:28:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-12-15 11:28:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1568. [2021-12-15 11:28:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1561 states have (on average 1.3401665598975017) internal successors, (2092), 1567 states have internal predecessors, (2092), 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 11:28:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2092 transitions. [2021-12-15 11:28:47,837 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2092 transitions. Word has length 64 [2021-12-15 11:28:47,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:47,838 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2092 transitions. [2021-12-15 11:28:47,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 11:28:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2092 transitions. [2021-12-15 11:28:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-15 11:28:47,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:47,841 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] [2021-12-15 11:28:47,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:28:47,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1566940908, now seen corresponding path program 1 times [2021-12-15 11:28:47,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152014050] [2021-12-15 11:28:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:47,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:47,916 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 11:28:47,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152014050] [2021-12-15 11:28:47,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152014050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:47,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:47,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:28:47,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538966770] [2021-12-15 11:28:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:47,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:47,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:47,919 INFO L87 Difference]: Start difference. First operand 1568 states and 2092 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 11:28:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:48,416 INFO L93 Difference]: Finished difference Result 3046 states and 4188 transitions. [2021-12-15 11:28:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2021-12-15 11:28:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:48,422 INFO L225 Difference]: With dead ends: 3046 [2021-12-15 11:28:48,422 INFO L226 Difference]: Without dead ends: 1787 [2021-12-15 11:28:48,423 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 11:28:48,424 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 3657 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:48,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 835 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:28:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-12-15 11:28:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1779. [2021-12-15 11:28:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1772 states have (on average 1.3876975169300225) internal successors, (2459), 1778 states have internal predecessors, (2459), 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 11:28:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2459 transitions. [2021-12-15 11:28:48,468 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2459 transitions. Word has length 64 [2021-12-15 11:28:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:48,468 INFO L470 AbstractCegarLoop]: Abstraction has 1779 states and 2459 transitions. [2021-12-15 11:28:48,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 11:28:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2459 transitions. [2021-12-15 11:28:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 11:28:48,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:48,471 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] [2021-12-15 11:28:48,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:28:48,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2021-12-15 11:28:48,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:48,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362245227] [2021-12-15 11:28:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:48,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:48,521 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 11:28:48,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362245227] [2021-12-15 11:28:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362245227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:48,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:48,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:48,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85692746] [2021-12-15 11:28:48,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:48,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:48,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:48,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:48,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:48,524 INFO L87 Difference]: Start difference. First operand 1779 states and 2459 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 11:28:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:48,599 INFO L93 Difference]: Finished difference Result 4129 states and 5823 transitions. [2021-12-15 11:28:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-12-15 11:28:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:48,608 INFO L225 Difference]: With dead ends: 4129 [2021-12-15 11:28:48,608 INFO L226 Difference]: Without dead ends: 2953 [2021-12-15 11:28:48,610 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 11:28:48,611 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 897 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:48,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 2140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-12-15 11:28:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2941. [2021-12-15 11:28:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2934 states have (on average 1.3895705521472392) internal successors, (4077), 2940 states have internal predecessors, (4077), 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 11:28:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4077 transitions. [2021-12-15 11:28:48,729 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4077 transitions. Word has length 65 [2021-12-15 11:28:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:48,729 INFO L470 AbstractCegarLoop]: Abstraction has 2941 states and 4077 transitions. [2021-12-15 11:28:48,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 11:28:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4077 transitions. [2021-12-15 11:28:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 11:28:48,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:48,733 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] [2021-12-15 11:28:48,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:28:48,734 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1759204869, now seen corresponding path program 1 times [2021-12-15 11:28:48,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:48,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332200601] [2021-12-15 11:28:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:48,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:48,786 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 11:28:48,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:48,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332200601] [2021-12-15 11:28:48,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332200601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:48,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:48,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:28:48,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948374504] [2021-12-15 11:28:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:48,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:48,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:48,788 INFO L87 Difference]: Start difference. First operand 2941 states and 4077 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 11:28:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:49,269 INFO L93 Difference]: Finished difference Result 5812 states and 8153 transitions. [2021-12-15 11:28:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:49,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2021-12-15 11:28:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:49,279 INFO L225 Difference]: With dead ends: 5812 [2021-12-15 11:28:49,280 INFO L226 Difference]: Without dead ends: 3476 [2021-12-15 11:28:49,283 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 11:28:49,284 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 3047 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:49,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3047 Valid, 696 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:28:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2021-12-15 11:28:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3460. [2021-12-15 11:28:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3453 states have (on average 1.3828554879814654) internal successors, (4775), 3459 states have internal predecessors, (4775), 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 11:28:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4775 transitions. [2021-12-15 11:28:49,373 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4775 transitions. Word has length 65 [2021-12-15 11:28:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:49,374 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 4775 transitions. [2021-12-15 11:28:49,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 11:28:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4775 transitions. [2021-12-15 11:28:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 11:28:49,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:49,377 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] [2021-12-15 11:28:49,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:28:49,378 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1773849621, now seen corresponding path program 1 times [2021-12-15 11:28:49,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:49,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10149385] [2021-12-15 11:28:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:49,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:49,451 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 11:28:49,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:49,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10149385] [2021-12-15 11:28:49,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10149385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:49,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:49,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:28:49,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684294516] [2021-12-15 11:28:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:49,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:49,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:49,454 INFO L87 Difference]: Start difference. First operand 3460 states and 4775 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 11:28:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:49,853 INFO L93 Difference]: Finished difference Result 8470 states and 11935 transitions. [2021-12-15 11:28:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:49,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2021-12-15 11:28:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:49,869 INFO L225 Difference]: With dead ends: 8470 [2021-12-15 11:28:49,870 INFO L226 Difference]: Without dead ends: 5300 [2021-12-15 11:28:49,876 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 11:28:49,876 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 2724 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2724 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:49,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2724 Valid, 645 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:28:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2021-12-15 11:28:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 5292. [2021-12-15 11:28:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5285 states have (on average 1.4081362346263009) internal successors, (7442), 5291 states have internal predecessors, (7442), 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 11:28:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7442 transitions. [2021-12-15 11:28:50,080 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7442 transitions. Word has length 65 [2021-12-15 11:28:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:50,081 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 7442 transitions. [2021-12-15 11:28:50,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 11:28:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7442 transitions. [2021-12-15 11:28:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-15 11:28:50,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:50,085 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] [2021-12-15 11:28:50,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:28:50,085 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2076438910, now seen corresponding path program 1 times [2021-12-15 11:28:50,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:50,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036236950] [2021-12-15 11:28:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:50,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:50,140 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 11:28:50,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036236950] [2021-12-15 11:28:50,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036236950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:50,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:50,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:28:50,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226144720] [2021-12-15 11:28:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:50,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:28:50,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:28:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:28:50,141 INFO L87 Difference]: Start difference. First operand 5292 states and 7442 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 11:28:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:50,352 INFO L93 Difference]: Finished difference Result 11472 states and 16248 transitions. [2021-12-15 11:28:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:28:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-12-15 11:28:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:50,371 INFO L225 Difference]: With dead ends: 11472 [2021-12-15 11:28:50,371 INFO L226 Difference]: Without dead ends: 7315 [2021-12-15 11:28:50,377 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 11:28:50,378 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 585 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:50,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1532 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:28:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2021-12-15 11:28:50,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 7283. [2021-12-15 11:28:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7276 states have (on average 1.3845519516217701) internal successors, (10074), 7282 states have internal predecessors, (10074), 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 11:28:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 10074 transitions. [2021-12-15 11:28:50,669 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 10074 transitions. Word has length 66 [2021-12-15 11:28:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:50,669 INFO L470 AbstractCegarLoop]: Abstraction has 7283 states and 10074 transitions. [2021-12-15 11:28:50,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 11:28:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 10074 transitions. [2021-12-15 11:28:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 11:28:50,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:50,680 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] [2021-12-15 11:28:50,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:28:50,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1790108590, now seen corresponding path program 1 times [2021-12-15 11:28:50,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486901506] [2021-12-15 11:28:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:50,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:50,749 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 11:28:50,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:50,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486901506] [2021-12-15 11:28:50,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486901506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:50,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:50,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:28:50,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281802250] [2021-12-15 11:28:50,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:28:50,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:28:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:28:50,752 INFO L87 Difference]: Start difference. First operand 7283 states and 10074 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 11:28:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:51,346 INFO L93 Difference]: Finished difference Result 16628 states and 23145 transitions. [2021-12-15 11:28:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:28:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-12-15 11:28:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:51,374 INFO L225 Difference]: With dead ends: 16628 [2021-12-15 11:28:51,375 INFO L226 Difference]: Without dead ends: 9782 [2021-12-15 11:28:51,387 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 11:28:51,388 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 2380 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:51,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2380 Valid, 580 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 11:28:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2021-12-15 11:28:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 9738. [2021-12-15 11:28:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9731 states have (on average 1.3830027746377556) internal successors, (13458), 9737 states have internal predecessors, (13458), 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 11:28:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 13458 transitions. [2021-12-15 11:28:51,785 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 13458 transitions. Word has length 67 [2021-12-15 11:28:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 13458 transitions. [2021-12-15 11:28:51,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 11:28:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 13458 transitions. [2021-12-15 11:28:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-15 11:28:51,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:51,795 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] [2021-12-15 11:28:51,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:28:51,795 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 185593086, now seen corresponding path program 1 times [2021-12-15 11:28:51,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:51,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038407748] [2021-12-15 11:28:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:51,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:51,867 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 11:28:51,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038407748] [2021-12-15 11:28:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038407748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:51,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:51,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:28:51,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846645845] [2021-12-15 11:28:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:51,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:28:51,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:28:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:28:51,870 INFO L87 Difference]: Start difference. First operand 9738 states and 13458 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:28:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:54,068 INFO L93 Difference]: Finished difference Result 48544 states and 68425 transitions. [2021-12-15 11:28:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:28:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-12-15 11:28:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:54,190 INFO L225 Difference]: With dead ends: 48544 [2021-12-15 11:28:54,190 INFO L226 Difference]: Without dead ends: 44893 [2021-12-15 11:28:54,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 11:28:54,217 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 4966 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4966 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4966 Valid, 1133 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:28:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44893 states. [2021-12-15 11:28:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44893 to 9806. [2021-12-15 11:28:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9806 states, 9799 states have (on average 1.3823859577507909) internal successors, (13546), 9805 states have internal predecessors, (13546), 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 11:28:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9806 states to 9806 states and 13546 transitions. [2021-12-15 11:28:55,074 INFO L78 Accepts]: Start accepts. Automaton has 9806 states and 13546 transitions. Word has length 68 [2021-12-15 11:28:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:55,074 INFO L470 AbstractCegarLoop]: Abstraction has 9806 states and 13546 transitions. [2021-12-15 11:28:55,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:28:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9806 states and 13546 transitions. [2021-12-15 11:28:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-15 11:28:55,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:55,081 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] [2021-12-15 11:28:55,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:28:55,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash 290423248, now seen corresponding path program 1 times [2021-12-15 11:28:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:55,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056866061] [2021-12-15 11:28:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:55,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:55,142 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 11:28:55,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:55,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056866061] [2021-12-15 11:28:55,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056866061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:55,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:55,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:28:55,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766337055] [2021-12-15 11:28:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:55,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:28:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:28:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:28:55,144 INFO L87 Difference]: Start difference. First operand 9806 states and 13546 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:28:57,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:28:57,962 INFO L93 Difference]: Finished difference Result 44431 states and 62454 transitions. [2021-12-15 11:28:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:28:57,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-12-15 11:28:57,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:28:58,037 INFO L225 Difference]: With dead ends: 44431 [2021-12-15 11:28:58,037 INFO L226 Difference]: Without dead ends: 39789 [2021-12-15 11:28:58,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 11:28:58,056 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 4506 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:28:58,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4506 Valid, 1119 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:28:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39789 states. [2021-12-15 11:28:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39789 to 9962. [2021-12-15 11:28:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9962 states, 9955 states have (on average 1.381416373681567) internal successors, (13752), 9961 states have internal predecessors, (13752), 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 11:28:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9962 states to 9962 states and 13752 transitions. [2021-12-15 11:28:58,860 INFO L78 Accepts]: Start accepts. Automaton has 9962 states and 13752 transitions. Word has length 68 [2021-12-15 11:28:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:28:58,860 INFO L470 AbstractCegarLoop]: Abstraction has 9962 states and 13752 transitions. [2021-12-15 11:28:58,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:28:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9962 states and 13752 transitions. [2021-12-15 11:28:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-15 11:28:58,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:28:58,867 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] [2021-12-15 11:28:58,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:28:58,868 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:28:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:28:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2021-12-15 11:28:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:28:58,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787492771] [2021-12-15 11:28:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:28:58,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:28:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:28:58,974 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 11:28:58,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:28:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787492771] [2021-12-15 11:28:58,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787492771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:28:58,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:28:58,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:28:58,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380456311] [2021-12-15 11:28:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:28:58,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:28:58,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:28:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:28:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:28:58,976 INFO L87 Difference]: Start difference. First operand 9962 states and 13752 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:29:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:01,736 INFO L93 Difference]: Finished difference Result 38801 states and 54418 transitions. [2021-12-15 11:29:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:29:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-12-15 11:29:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:01,792 INFO L225 Difference]: With dead ends: 38801 [2021-12-15 11:29:01,792 INFO L226 Difference]: Without dead ends: 34525 [2021-12-15 11:29:01,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 11:29:01,807 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 3226 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:01,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3226 Valid, 1245 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-15 11:29:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34525 states. [2021-12-15 11:29:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34525 to 10033. [2021-12-15 11:29:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10033 states, 10026 states have (on average 1.381508078994614) internal successors, (13851), 10032 states have internal predecessors, (13851), 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 11:29:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 13851 transitions. [2021-12-15 11:29:02,714 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 13851 transitions. Word has length 68 [2021-12-15 11:29:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:02,715 INFO L470 AbstractCegarLoop]: Abstraction has 10033 states and 13851 transitions. [2021-12-15 11:29:02,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:29:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 13851 transitions. [2021-12-15 11:29:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-15 11:29:02,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:02,722 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] [2021-12-15 11:29:02,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:29:02,723 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:02,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2053099389, now seen corresponding path program 1 times [2021-12-15 11:29:02,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101036447] [2021-12-15 11:29:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:02,785 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 11:29:02,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:02,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101036447] [2021-12-15 11:29:02,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101036447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:02,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:02,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:29:02,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507522969] [2021-12-15 11:29:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:02,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 11:29:02,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 11:29:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 11:29:02,788 INFO L87 Difference]: Start difference. First operand 10033 states and 13851 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:29:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:05,413 INFO L93 Difference]: Finished difference Result 35361 states and 49278 transitions. [2021-12-15 11:29:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 11:29:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-12-15 11:29:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:05,473 INFO L225 Difference]: With dead ends: 35361 [2021-12-15 11:29:05,473 INFO L226 Difference]: Without dead ends: 30619 [2021-12-15 11:29:05,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-15 11:29:05,496 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 4359 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:05,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 1072 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:29:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30619 states. [2021-12-15 11:29:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30619 to 10068. [2021-12-15 11:29:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10061 states have (on average 1.3811748335155551) internal successors, (13896), 10067 states have internal predecessors, (13896), 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 11:29:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13896 transitions. [2021-12-15 11:29:06,476 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13896 transitions. Word has length 68 [2021-12-15 11:29:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:06,477 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13896 transitions. [2021-12-15 11:29:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 11:29:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13896 transitions. [2021-12-15 11:29:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 11:29:06,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:06,483 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] [2021-12-15 11:29:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:29:06,484 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2021-12-15 11:29:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335836489] [2021-12-15 11:29:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:06,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:06,592 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 11:29:06,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:06,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335836489] [2021-12-15 11:29:06,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335836489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:06,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:06,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 11:29:06,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305442041] [2021-12-15 11:29:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:06,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 11:29:06,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 11:29:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-15 11:29:06,594 INFO L87 Difference]: Start difference. First operand 10068 states and 13896 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 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 11:29:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:08,541 INFO L93 Difference]: Finished difference Result 26053 states and 36546 transitions. [2021-12-15 11:29:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 11:29:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 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 69 [2021-12-15 11:29:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:08,570 INFO L225 Difference]: With dead ends: 26053 [2021-12-15 11:29:08,571 INFO L226 Difference]: Without dead ends: 18920 [2021-12-15 11:29:08,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-15 11:29:08,586 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 2919 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:08,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 1486 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:29:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18920 states. [2021-12-15 11:29:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18920 to 9762. [2021-12-15 11:29:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 9755 states have (on average 1.380112762685802) internal successors, (13463), 9761 states have internal predecessors, (13463), 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 11:29:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 13463 transitions. [2021-12-15 11:29:09,305 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 13463 transitions. Word has length 69 [2021-12-15 11:29:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 9762 states and 13463 transitions. [2021-12-15 11:29:09,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 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 11:29:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 13463 transitions. [2021-12-15 11:29:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 11:29:09,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:09,312 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] [2021-12-15 11:29:09,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:29:09,312 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2021-12-15 11:29:09,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:09,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560741226] [2021-12-15 11:29:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:09,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:09,407 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 11:29:09,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560741226] [2021-12-15 11:29:09,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560741226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:09,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:09,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:29:09,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476376918] [2021-12-15 11:29:09,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:09,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:29:09,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:29:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:29:09,409 INFO L87 Difference]: Start difference. First operand 9762 states and 13463 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:12,132 INFO L93 Difference]: Finished difference Result 29323 states and 41229 transitions. [2021-12-15 11:29:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:29:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2021-12-15 11:29:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:12,165 INFO L225 Difference]: With dead ends: 29323 [2021-12-15 11:29:12,165 INFO L226 Difference]: Without dead ends: 22648 [2021-12-15 11:29:12,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-15 11:29:12,184 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 3704 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3704 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:12,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3704 Valid, 1997 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:29:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22648 states. [2021-12-15 11:29:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22648 to 9627. [2021-12-15 11:29:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 9620 states have (on average 1.3798336798336799) internal successors, (13274), 9626 states have internal predecessors, (13274), 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 11:29:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13274 transitions. [2021-12-15 11:29:13,178 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13274 transitions. Word has length 69 [2021-12-15 11:29:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:13,178 INFO L470 AbstractCegarLoop]: Abstraction has 9627 states and 13274 transitions. [2021-12-15 11:29:13,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13274 transitions. [2021-12-15 11:29:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 11:29:13,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:13,184 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] [2021-12-15 11:29:13,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:29:13,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:13,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2021-12-15 11:29:13,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:13,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293042122] [2021-12-15 11:29:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:13,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:13,295 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 11:29:13,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:13,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293042122] [2021-12-15 11:29:13,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293042122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:13,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:13,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:29:13,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860304859] [2021-12-15 11:29:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:13,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:29:13,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:29:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:29:13,297 INFO L87 Difference]: Start difference. First operand 9627 states and 13274 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:16,801 INFO L93 Difference]: Finished difference Result 32205 states and 45405 transitions. [2021-12-15 11:29:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:29:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2021-12-15 11:29:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:16,833 INFO L225 Difference]: With dead ends: 32205 [2021-12-15 11:29:16,833 INFO L226 Difference]: Without dead ends: 25754 [2021-12-15 11:29:16,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-15 11:29:16,845 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 3658 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:16,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3658 Valid, 2160 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:29:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25754 states. [2021-12-15 11:29:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25754 to 9603. [2021-12-15 11:29:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9603 states, 9596 states have (on average 1.3792205085452272) internal successors, (13235), 9602 states have internal predecessors, (13235), 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 11:29:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9603 states to 9603 states and 13235 transitions. [2021-12-15 11:29:17,709 INFO L78 Accepts]: Start accepts. Automaton has 9603 states and 13235 transitions. Word has length 69 [2021-12-15 11:29:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 9603 states and 13235 transitions. [2021-12-15 11:29:17,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9603 states and 13235 transitions. [2021-12-15 11:29:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-15 11:29:17,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:17,715 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] [2021-12-15 11:29:17,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:29:17,715 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2021-12-15 11:29:17,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:17,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949171945] [2021-12-15 11:29:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:17,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:17,819 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 11:29:17,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:17,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949171945] [2021-12-15 11:29:17,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949171945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:17,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:17,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:29:17,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035362369] [2021-12-15 11:29:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:17,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:29:17,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:29:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:29:17,821 INFO L87 Difference]: Start difference. First operand 9603 states and 13235 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:21,467 INFO L93 Difference]: Finished difference Result 31995 states and 45096 transitions. [2021-12-15 11:29:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:29:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 69 [2021-12-15 11:29:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:21,508 INFO L225 Difference]: With dead ends: 31995 [2021-12-15 11:29:21,508 INFO L226 Difference]: Without dead ends: 25571 [2021-12-15 11:29:21,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-15 11:29:21,519 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 3593 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:21,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3593 Valid, 2192 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:29:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25571 states. [2021-12-15 11:29:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25571 to 9591. [2021-12-15 11:29:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9591 states, 9584 states have (on average 1.3785475792988313) internal successors, (13212), 9590 states have internal predecessors, (13212), 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 11:29:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9591 states to 9591 states and 13212 transitions. [2021-12-15 11:29:22,492 INFO L78 Accepts]: Start accepts. Automaton has 9591 states and 13212 transitions. Word has length 69 [2021-12-15 11:29:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:22,493 INFO L470 AbstractCegarLoop]: Abstraction has 9591 states and 13212 transitions. [2021-12-15 11:29:22,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 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 11:29:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9591 states and 13212 transitions. [2021-12-15 11:29:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:29:22,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:22,498 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] [2021-12-15 11:29:22,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:29:22,498 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2021-12-15 11:29:22,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:22,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616007195] [2021-12-15 11:29:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:22,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:22,742 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 11:29:22,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:22,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616007195] [2021-12-15 11:29:22,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616007195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:22,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:22,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-15 11:29:22,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616921451] [2021-12-15 11:29:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:22,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 11:29:22,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 11:29:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-15 11:29:22,743 INFO L87 Difference]: Start difference. First operand 9591 states and 13212 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 11:29:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:28,533 INFO L93 Difference]: Finished difference Result 48695 states and 69134 transitions. [2021-12-15 11:29:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 11:29:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 70 [2021-12-15 11:29:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:28,600 INFO L225 Difference]: With dead ends: 48695 [2021-12-15 11:29:28,600 INFO L226 Difference]: Without dead ends: 42274 [2021-12-15 11:29:28,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-12-15 11:29:28,633 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 4341 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:28,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4341 Valid, 5570 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 11:29:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42274 states. [2021-12-15 11:29:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42274 to 9571. [2021-12-15 11:29:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9571 states, 9565 states have (on average 1.377417668583377) internal successors, (13175), 9570 states have internal predecessors, (13175), 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 11:29:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 13175 transitions. [2021-12-15 11:29:30,012 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 13175 transitions. Word has length 70 [2021-12-15 11:29:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:30,013 INFO L470 AbstractCegarLoop]: Abstraction has 9571 states and 13175 transitions. [2021-12-15 11:29:30,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 11:29:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 13175 transitions. [2021-12-15 11:29:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:29:30,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:30,027 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] [2021-12-15 11:29:30,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 11:29:30,028 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1142484158, now seen corresponding path program 1 times [2021-12-15 11:29:30,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436573309] [2021-12-15 11:29:30,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:30,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:30,338 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 11:29:30,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:30,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436573309] [2021-12-15 11:29:30,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436573309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:30,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:30,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-15 11:29:30,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177590105] [2021-12-15 11:29:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:30,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 11:29:30,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 11:29:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-15 11:29:30,340 INFO L87 Difference]: Start difference. First operand 9571 states and 13175 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 11:29:35,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:35,974 INFO L93 Difference]: Finished difference Result 42137 states and 59593 transitions. [2021-12-15 11:29:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-15 11:29:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 70 [2021-12-15 11:29:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:36,029 INFO L225 Difference]: With dead ends: 42137 [2021-12-15 11:29:36,030 INFO L226 Difference]: Without dead ends: 35460 [2021-12-15 11:29:36,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:29:36,049 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 3827 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:36,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3827 Valid, 3714 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:29:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35460 states. [2021-12-15 11:29:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35460 to 9322. [2021-12-15 11:29:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9317 states have (on average 1.3754427390791026) internal successors, (12815), 9321 states have internal predecessors, (12815), 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 11:29:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 12815 transitions. [2021-12-15 11:29:37,535 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 12815 transitions. Word has length 70 [2021-12-15 11:29:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:37,535 INFO L470 AbstractCegarLoop]: Abstraction has 9322 states and 12815 transitions. [2021-12-15 11:29:37,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 11:29:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 12815 transitions. [2021-12-15 11:29:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:29:37,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:37,541 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] [2021-12-15 11:29:37,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 11:29:37,541 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1346201798, now seen corresponding path program 1 times [2021-12-15 11:29:37,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:37,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370580775] [2021-12-15 11:29:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:37,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:37,599 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 11:29:37,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:37,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370580775] [2021-12-15 11:29:37,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370580775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:37,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:37,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:29:37,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236736042] [2021-12-15 11:29:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:37,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:29:37,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:29:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:29:37,602 INFO L87 Difference]: Start difference. First operand 9322 states and 12815 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 11:29:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:38,839 INFO L93 Difference]: Finished difference Result 13044 states and 18007 transitions. [2021-12-15 11:29:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 11:29:38,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-12-15 11:29:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:38,855 INFO L225 Difference]: With dead ends: 13044 [2021-12-15 11:29:38,855 INFO L226 Difference]: Without dead ends: 9328 [2021-12-15 11:29:38,862 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 11:29:38,863 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 428 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:38,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 1357 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:29:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2021-12-15 11:29:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9322. [2021-12-15 11:29:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9317 states have (on average 1.3622410647204035) internal successors, (12692), 9321 states have internal predecessors, (12692), 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 11:29:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 12692 transitions. [2021-12-15 11:29:40,537 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 12692 transitions. Word has length 70 [2021-12-15 11:29:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 9322 states and 12692 transitions. [2021-12-15 11:29:40,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 11:29:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 12692 transitions. [2021-12-15 11:29:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-15 11:29:40,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:40,543 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] [2021-12-15 11:29:40,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 11:29:40,543 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1360936426, now seen corresponding path program 1 times [2021-12-15 11:29:40,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403990150] [2021-12-15 11:29:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:40,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:40,737 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 11:29:40,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403990150] [2021-12-15 11:29:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403990150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:40,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:40,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-15 11:29:40,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055986309] [2021-12-15 11:29:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:40,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 11:29:40,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 11:29:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-15 11:29:40,738 INFO L87 Difference]: Start difference. First operand 9322 states and 12692 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 11:29:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:29:46,259 INFO L93 Difference]: Finished difference Result 35238 states and 49051 transitions. [2021-12-15 11:29:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 11:29:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 70 [2021-12-15 11:29:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:29:46,303 INFO L225 Difference]: With dead ends: 35238 [2021-12-15 11:29:46,304 INFO L226 Difference]: Without dead ends: 28446 [2021-12-15 11:29:46,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2021-12-15 11:29:46,320 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 4457 mSDsluCounter, 4787 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:29:46,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4457 Valid, 5662 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:29:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28446 states. [2021-12-15 11:29:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28446 to 8925. [2021-12-15 11:29:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8925 states, 8922 states have (on average 1.3635956063662855) internal successors, (12166), 8924 states have internal predecessors, (12166), 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 11:29:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 12166 transitions. [2021-12-15 11:29:47,706 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 12166 transitions. Word has length 70 [2021-12-15 11:29:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:29:47,706 INFO L470 AbstractCegarLoop]: Abstraction has 8925 states and 12166 transitions. [2021-12-15 11:29:47,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 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 11:29:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 12166 transitions. [2021-12-15 11:29:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-15 11:29:47,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:29:47,715 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] [2021-12-15 11:29:47,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 11:29:47,715 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-15 11:29:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:29:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -452169058, now seen corresponding path program 1 times [2021-12-15 11:29:47,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:29:47,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466781219] [2021-12-15 11:29:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:29:47,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:29:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:29:47,797 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 11:29:47,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:29:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466781219] [2021-12-15 11:29:47,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466781219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:29:47,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:29:47,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 11:29:47,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770909700] [2021-12-15 11:29:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:29:47,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 11:29:47,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:29:47,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 11:29:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 11:29:47,800 INFO L87 Difference]: Start difference. First operand 8925 states and 12166 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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)