./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8 --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 d2ba51bdecedc8a39a24625eeb8da910bb1c988071a15f12bed2cd804a9146c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:01:35,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:01:35,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:01:35,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:01:35,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:01:35,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:01:35,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:01:35,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:01:35,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:01:35,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:01:35,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:01:35,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:01:35,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:01:35,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:01:35,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:01:35,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:01:35,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:01:35,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:01:35,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:01:35,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:01:35,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:01:35,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:01:35,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:01:35,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:01:35,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:01:35,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:01:35,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:01:35,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:01:35,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:01:35,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:01:35,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:01:35,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:01:35,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:01:35,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:01:35,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:01:35,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:01:35,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:01:35,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:01:35,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:01:35,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:01:35,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:01:35,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:01:35,835 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:01:35,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:01:35,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:01:35,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:01:35,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:01:35,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:01:35,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:01:35,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:01:35,839 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:01:35,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:01:35,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:01:35,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:01:35,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:01:35,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:01:35,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:01:35,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:01:35,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:01:35,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:01:35,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:01:35,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:01:35,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:01:35,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:01:35,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:01:35,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:01:35,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:01:35,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:01:35,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:01:35,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:01:35,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:01:35,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:01:35,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:01:35,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:01:35,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:01:35,849 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2ba51bdecedc8a39a24625eeb8da910bb1c988071a15f12bed2cd804a9146c3 [2022-11-16 12:01:36,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:01:36,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:01:36,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:01:36,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:01:36,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:01:36,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:01:36,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/data/601b873e6/6740a7dde0b2497ebe82bff64e74cdb3/FLAG81e8406ce [2022-11-16 12:01:36,874 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:01:36,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:01:36,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/data/601b873e6/6740a7dde0b2497ebe82bff64e74cdb3/FLAG81e8406ce [2022-11-16 12:01:37,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/data/601b873e6/6740a7dde0b2497ebe82bff64e74cdb3 [2022-11-16 12:01:37,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:01:37,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:01:37,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:37,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:01:37,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:01:37,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450bb4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37, skipping insertion in model container [2022-11-16 12:01:37,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:01:37,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:01:37,616 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6638,6651] [2022-11-16 12:01:37,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:37,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:01:37,729 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6638,6651] [2022-11-16 12:01:37,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:37,792 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:01:37,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37 WrapperNode [2022-11-16 12:01:37,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:37,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:37,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:01:37,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:01:37,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,860 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 516 [2022-11-16 12:01:37,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:37,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:01:37,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:01:37,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:01:37,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:01:37,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:01:37,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:01:37,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:01:37,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (1/1) ... [2022-11-16 12:01:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:01:37,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:01:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:01:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:01:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:01:38,171 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:01:38,173 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:01:38,797 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:01:38,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:01:38,809 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:01:38,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:38 BoogieIcfgContainer [2022-11-16 12:01:38,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:01:38,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:01:38,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:01:38,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:01:38,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:01:37" (1/3) ... [2022-11-16 12:01:38,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:01:38, skipping insertion in model container [2022-11-16 12:01:38,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:37" (2/3) ... [2022-11-16 12:01:38,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:01:38, skipping insertion in model container [2022-11-16 12:01:38,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:38" (3/3) ... [2022-11-16 12:01:38,827 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:01:38,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:01:38,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:01:38,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:01:38,937 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58d81d7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:01:38,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:01:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 121 states have (on average 1.743801652892562) internal successors, (211), 122 states have internal predecessors, (211), 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) [2022-11-16 12:01:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:01:38,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:38,960 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:38,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:38,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1503533793, now seen corresponding path program 1 times [2022-11-16 12:01:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:38,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825546548] [2022-11-16 12:01:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:39,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825546548] [2022-11-16 12:01:39,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825546548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:39,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:39,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617085497] [2022-11-16 12:01:39,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:39,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:39,889 INFO L87 Difference]: Start difference. First operand has 123 states, 121 states have (on average 1.743801652892562) internal successors, (211), 122 states have internal predecessors, (211), 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 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-16 12:01:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:40,291 INFO L93 Difference]: Finished difference Result 588 states and 943 transitions. [2022-11-16 12:01:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:01:40,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 61 [2022-11-16 12:01:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:40,308 INFO L225 Difference]: With dead ends: 588 [2022-11-16 12:01:40,308 INFO L226 Difference]: Without dead ends: 518 [2022-11-16 12:01:40,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:01:40,315 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1055 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:40,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1117 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:01:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-16 12:01:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 186. [2022-11-16 12:01:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.4594594594594594) internal successors, (270), 185 states have internal predecessors, (270), 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) [2022-11-16 12:01:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2022-11-16 12:01:40,392 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 61 [2022-11-16 12:01:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:40,393 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2022-11-16 12:01:40,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-16 12:01:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2022-11-16 12:01:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:40,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:40,395 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:01:40,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -886934908, now seen corresponding path program 1 times [2022-11-16 12:01:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:40,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302655334] [2022-11-16 12:01:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302655334] [2022-11-16 12:01:40,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302655334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:40,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:40,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072326464] [2022-11-16 12:01:40,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:40,634 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:40,842 INFO L93 Difference]: Finished difference Result 664 states and 1021 transitions. [2022-11-16 12:01:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:40,846 INFO L225 Difference]: With dead ends: 664 [2022-11-16 12:01:40,847 INFO L226 Difference]: Without dead ends: 562 [2022-11-16 12:01:40,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:40,855 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 608 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:40,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 760 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-16 12:01:40,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 292. [2022-11-16 12:01:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.5051546391752577) internal successors, (438), 291 states have internal predecessors, (438), 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) [2022-11-16 12:01:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 438 transitions. [2022-11-16 12:01:40,928 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 438 transitions. Word has length 63 [2022-11-16 12:01:40,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 438 transitions. [2022-11-16 12:01:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 438 transitions. [2022-11-16 12:01:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:40,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:40,938 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:01:40,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:40,939 INFO L85 PathProgramCache]: Analyzing trace with hash 497894544, now seen corresponding path program 1 times [2022-11-16 12:01:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:40,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305914634] [2022-11-16 12:01:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:40,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:41,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305914634] [2022-11-16 12:01:41,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305914634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:41,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:41,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:41,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328746280] [2022-11-16 12:01:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:41,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:41,094 INFO L87 Difference]: Start difference. First operand 292 states and 438 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:41,324 INFO L93 Difference]: Finished difference Result 765 states and 1181 transitions. [2022-11-16 12:01:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:41,332 INFO L225 Difference]: With dead ends: 765 [2022-11-16 12:01:41,332 INFO L226 Difference]: Without dead ends: 663 [2022-11-16 12:01:41,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:41,343 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 687 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:41,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 748 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-11-16 12:01:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 443. [2022-11-16 12:01:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5316742081447965) internal successors, (677), 442 states have internal predecessors, (677), 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) [2022-11-16 12:01:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 677 transitions. [2022-11-16 12:01:41,429 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 677 transitions. Word has length 63 [2022-11-16 12:01:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:41,429 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 677 transitions. [2022-11-16 12:01:41,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 677 transitions. [2022-11-16 12:01:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:41,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:41,433 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:01:41,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1329115962, now seen corresponding path program 1 times [2022-11-16 12:01:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:41,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114959126] [2022-11-16 12:01:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:41,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114959126] [2022-11-16 12:01:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114959126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:41,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:41,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:01:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018777239] [2022-11-16 12:01:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:41,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:01:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:01:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:01:41,549 INFO L87 Difference]: Start difference. First operand 443 states and 677 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-16 12:01:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:41,711 INFO L93 Difference]: Finished difference Result 1102 states and 1714 transitions. [2022-11-16 12:01:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:01:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:41,717 INFO L225 Difference]: With dead ends: 1102 [2022-11-16 12:01:41,717 INFO L226 Difference]: Without dead ends: 750 [2022-11-16 12:01:41,720 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:01:41,728 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 68 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:41,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 380 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:01:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-16 12:01:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 734. [2022-11-16 12:01:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5279672578444747) internal successors, (1120), 733 states have internal predecessors, (1120), 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) [2022-11-16 12:01:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1120 transitions. [2022-11-16 12:01:41,829 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1120 transitions. Word has length 63 [2022-11-16 12:01:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:41,829 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1120 transitions. [2022-11-16 12:01:41,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-16 12:01:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1120 transitions. [2022-11-16 12:01:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:41,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:41,832 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:01:41,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1501695225, now seen corresponding path program 1 times [2022-11-16 12:01:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:41,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952162531] [2022-11-16 12:01:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:42,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952162531] [2022-11-16 12:01:42,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952162531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:42,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:42,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837324920] [2022-11-16 12:01:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:42,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:42,236 INFO L87 Difference]: Start difference. First operand 734 states and 1120 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:42,481 INFO L93 Difference]: Finished difference Result 1379 states and 2122 transitions. [2022-11-16 12:01:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:42,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:42,486 INFO L225 Difference]: With dead ends: 1379 [2022-11-16 12:01:42,486 INFO L226 Difference]: Without dead ends: 736 [2022-11-16 12:01:42,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:42,488 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 237 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:42,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 627 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:42,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-11-16 12:01:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2022-11-16 12:01:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5225102319236017) internal successors, (1116), 733 states have internal predecessors, (1116), 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) [2022-11-16 12:01:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1116 transitions. [2022-11-16 12:01:42,595 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1116 transitions. Word has length 63 [2022-11-16 12:01:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:42,597 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1116 transitions. [2022-11-16 12:01:42,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1116 transitions. [2022-11-16 12:01:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:42,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:42,601 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:01:42,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1505725276, now seen corresponding path program 1 times [2022-11-16 12:01:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:42,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557769259] [2022-11-16 12:01:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:42,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557769259] [2022-11-16 12:01:42,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557769259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:42,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:42,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176116434] [2022-11-16 12:01:42,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:42,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:42,784 INFO L87 Difference]: Start difference. First operand 734 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:43,142 INFO L93 Difference]: Finished difference Result 1494 states and 2292 transitions. [2022-11-16 12:01:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:43,150 INFO L225 Difference]: With dead ends: 1494 [2022-11-16 12:01:43,150 INFO L226 Difference]: Without dead ends: 1309 [2022-11-16 12:01:43,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:43,153 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 653 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:43,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1062 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-16 12:01:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 928. [2022-11-16 12:01:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.528586839266451) internal successors, (1417), 927 states have internal predecessors, (1417), 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) [2022-11-16 12:01:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1417 transitions. [2022-11-16 12:01:43,288 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1417 transitions. Word has length 63 [2022-11-16 12:01:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:43,289 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1417 transitions. [2022-11-16 12:01:43,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1417 transitions. [2022-11-16 12:01:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:01:43,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:43,290 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:43,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:01:43,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1830608528, now seen corresponding path program 1 times [2022-11-16 12:01:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796322275] [2022-11-16 12:01:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:43,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796322275] [2022-11-16 12:01:43,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796322275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:43,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:43,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:01:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121875176] [2022-11-16 12:01:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:43,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:43,477 INFO L87 Difference]: Start difference. First operand 928 states and 1417 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:43,786 INFO L93 Difference]: Finished difference Result 1688 states and 2593 transitions. [2022-11-16 12:01:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2022-11-16 12:01:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:43,792 INFO L225 Difference]: With dead ends: 1688 [2022-11-16 12:01:43,792 INFO L226 Difference]: Without dead ends: 1503 [2022-11-16 12:01:43,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:43,795 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 660 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:43,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 774 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-11-16 12:01:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1122. [2022-11-16 12:01:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.5325602140945584) internal successors, (1718), 1121 states have internal predecessors, (1718), 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) [2022-11-16 12:01:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1718 transitions. [2022-11-16 12:01:43,972 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1718 transitions. Word has length 63 [2022-11-16 12:01:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1718 transitions. [2022-11-16 12:01:43,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2022-11-16 12:01:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1718 transitions. [2022-11-16 12:01:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:01:43,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:43,974 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:43,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:01:43,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1584928427, now seen corresponding path program 1 times [2022-11-16 12:01:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473626207] [2022-11-16 12:01:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:44,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473626207] [2022-11-16 12:01:44,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473626207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:44,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:44,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:01:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688527589] [2022-11-16 12:01:44,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:44,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:01:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:01:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:01:44,103 INFO L87 Difference]: Start difference. First operand 1122 states and 1718 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) [2022-11-16 12:01:44,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:44,704 INFO L93 Difference]: Finished difference Result 3264 states and 5032 transitions. [2022-11-16 12:01:44,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:01:44,705 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 [2022-11-16 12:01:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:44,713 INFO L225 Difference]: With dead ends: 3264 [2022-11-16 12:01:44,713 INFO L226 Difference]: Without dead ends: 2171 [2022-11-16 12:01:44,715 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:01:44,715 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 667 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:44,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 148 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:01:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2022-11-16 12:01:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2022-11-16 12:01:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.5313653136531364) internal successors, (3320), 2168 states have internal predecessors, (3320), 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) [2022-11-16 12:01:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3320 transitions. [2022-11-16 12:01:45,084 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3320 transitions. Word has length 64 [2022-11-16 12:01:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:45,084 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3320 transitions. [2022-11-16 12:01:45,084 INFO L496 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) [2022-11-16 12:01:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3320 transitions. [2022-11-16 12:01:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:01:45,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:45,086 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:01:45,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash -747879712, now seen corresponding path program 1 times [2022-11-16 12:01:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:45,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297527660] [2022-11-16 12:01:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:45,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:45,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297527660] [2022-11-16 12:01:45,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297527660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:45,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:45,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:01:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977249138] [2022-11-16 12:01:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:01:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:01:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:01:45,187 INFO L87 Difference]: Start difference. First operand 2169 states and 3320 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) [2022-11-16 12:01:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:45,683 INFO L93 Difference]: Finished difference Result 4297 states and 6596 transitions. [2022-11-16 12:01:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:01:45,684 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 [2022-11-16 12:01:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:45,691 INFO L225 Difference]: With dead ends: 4297 [2022-11-16 12:01:45,692 INFO L226 Difference]: Without dead ends: 2169 [2022-11-16 12:01:45,697 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:01:45,699 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 418 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:45,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 115 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-11-16 12:01:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2169. [2022-11-16 12:01:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.5106088560885609) internal successors, (3275), 2168 states have internal predecessors, (3275), 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) [2022-11-16 12:01:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3275 transitions. [2022-11-16 12:01:46,073 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3275 transitions. Word has length 65 [2022-11-16 12:01:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:46,074 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3275 transitions. [2022-11-16 12:01:46,074 INFO L496 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) [2022-11-16 12:01:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3275 transitions. [2022-11-16 12:01:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:01:46,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:46,076 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:46,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:01:46,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 431205441, now seen corresponding path program 1 times [2022-11-16 12:01:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889026029] [2022-11-16 12:01:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:46,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:46,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889026029] [2022-11-16 12:01:46,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889026029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:46,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:46,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:01:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010814622] [2022-11-16 12:01:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:01:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:01:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:01:46,215 INFO L87 Difference]: Start difference. First operand 2169 states and 3275 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2022-11-16 12:01:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:46,705 INFO L93 Difference]: Finished difference Result 4305 states and 6516 transitions. [2022-11-16 12:01:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:01:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 [2022-11-16 12:01:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:46,714 INFO L225 Difference]: With dead ends: 4305 [2022-11-16 12:01:46,714 INFO L226 Difference]: Without dead ends: 2169 [2022-11-16 12:01:46,717 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:01:46,718 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 434 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:46,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 99 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-11-16 12:01:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2169. [2022-11-16 12:01:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4898523985239853) internal successors, (3230), 2168 states have internal predecessors, (3230), 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) [2022-11-16 12:01:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3230 transitions. [2022-11-16 12:01:47,083 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3230 transitions. Word has length 66 [2022-11-16 12:01:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3230 transitions. [2022-11-16 12:01:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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) [2022-11-16 12:01:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3230 transitions. [2022-11-16 12:01:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:01:47,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:47,084 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:01:47,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1430381312, now seen corresponding path program 1 times [2022-11-16 12:01:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:47,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365602450] [2022-11-16 12:01:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:47,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365602450] [2022-11-16 12:01:47,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365602450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:47,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:47,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:01:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290623877] [2022-11-16 12:01:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:47,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:01:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:47,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:01:47,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:01:47,183 INFO L87 Difference]: Start difference. First operand 2169 states and 3230 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) [2022-11-16 12:01:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:47,667 INFO L93 Difference]: Finished difference Result 4301 states and 6422 transitions. [2022-11-16 12:01:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:01:47,668 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 [2022-11-16 12:01:47,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:47,676 INFO L225 Difference]: With dead ends: 4301 [2022-11-16 12:01:47,676 INFO L226 Difference]: Without dead ends: 2169 [2022-11-16 12:01:47,679 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:01:47,680 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 416 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:47,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 107 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:01:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-11-16 12:01:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2169. [2022-11-16 12:01:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4690959409594095) internal successors, (3185), 2168 states have internal predecessors, (3185), 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) [2022-11-16 12:01:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3185 transitions. [2022-11-16 12:01:48,201 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3185 transitions. Word has length 67 [2022-11-16 12:01:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:48,201 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3185 transitions. [2022-11-16 12:01:48,202 INFO L496 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) [2022-11-16 12:01:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3185 transitions. [2022-11-16 12:01:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:01:48,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:48,203 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:48,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:01:48,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash -654863315, now seen corresponding path program 1 times [2022-11-16 12:01:48,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:48,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434555770] [2022-11-16 12:01:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:48,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434555770] [2022-11-16 12:01:48,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434555770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:48,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:48,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:01:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521266836] [2022-11-16 12:01:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:48,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:01:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:01:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:01:48,806 INFO L87 Difference]: Start difference. First operand 2169 states and 3185 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 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) [2022-11-16 12:01:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:50,349 INFO L93 Difference]: Finished difference Result 5376 states and 7867 transitions. [2022-11-16 12:01:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:01:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 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 [2022-11-16 12:01:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:50,362 INFO L225 Difference]: With dead ends: 5376 [2022-11-16 12:01:50,362 INFO L226 Difference]: Without dead ends: 3306 [2022-11-16 12:01:50,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:01:50,366 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1150 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:50,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 469 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:01:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2022-11-16 12:01:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 2169. [2022-11-16 12:01:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4677121771217712) internal successors, (3182), 2168 states have internal predecessors, (3182), 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) [2022-11-16 12:01:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3182 transitions. [2022-11-16 12:01:50,915 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3182 transitions. Word has length 68 [2022-11-16 12:01:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3182 transitions. [2022-11-16 12:01:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 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) [2022-11-16 12:01:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3182 transitions. [2022-11-16 12:01:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:01:50,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:50,917 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:50,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:01:50,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash 302063151, now seen corresponding path program 1 times [2022-11-16 12:01:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:50,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398657451] [2022-11-16 12:01:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:50,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:51,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398657451] [2022-11-16 12:01:51,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398657451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:51,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:51,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:01:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199235449] [2022-11-16 12:01:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:01:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:01:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:01:51,478 INFO L87 Difference]: Start difference. First operand 2169 states and 3182 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 12:01:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:53,589 INFO L93 Difference]: Finished difference Result 6382 states and 9358 transitions. [2022-11-16 12:01:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:01:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2022-11-16 12:01:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:53,604 INFO L225 Difference]: With dead ends: 6382 [2022-11-16 12:01:53,605 INFO L226 Difference]: Without dead ends: 4327 [2022-11-16 12:01:53,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:01:53,609 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 880 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 412 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:01:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-11-16 12:01:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2169. [2022-11-16 12:01:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4649446494464944) internal successors, (3176), 2168 states have internal predecessors, (3176), 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) [2022-11-16 12:01:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3176 transitions. [2022-11-16 12:01:54,273 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3176 transitions. Word has length 69 [2022-11-16 12:01:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:54,273 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3176 transitions. [2022-11-16 12:01:54,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 12:01:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3176 transitions. [2022-11-16 12:01:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:01:54,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:54,275 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:54,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:01:54,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash 69264625, now seen corresponding path program 1 times [2022-11-16 12:01:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:54,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868962089] [2022-11-16 12:01:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:54,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:54,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:54,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868962089] [2022-11-16 12:01:54,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868962089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:54,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:54,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:01:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208070576] [2022-11-16 12:01:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:54,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:01:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:01:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:01:54,849 INFO L87 Difference]: Start difference. First operand 2169 states and 3176 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 12:01:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:56,590 INFO L93 Difference]: Finished difference Result 6337 states and 9280 transitions. [2022-11-16 12:01:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:01:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2022-11-16 12:01:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:56,607 INFO L225 Difference]: With dead ends: 6337 [2022-11-16 12:01:56,607 INFO L226 Difference]: Without dead ends: 4312 [2022-11-16 12:01:56,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:01:56,612 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1035 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 457 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:01:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-11-16 12:01:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2169. [2022-11-16 12:01:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4607933579335792) internal successors, (3167), 2168 states have internal predecessors, (3167), 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) [2022-11-16 12:01:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3167 transitions. [2022-11-16 12:01:57,443 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3167 transitions. Word has length 69 [2022-11-16 12:01:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:01:57,443 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3167 transitions. [2022-11-16 12:01:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2022-11-16 12:01:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3167 transitions. [2022-11-16 12:01:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:01:57,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:01:57,445 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:01:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:01:57,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:01:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1288867045, now seen corresponding path program 1 times [2022-11-16 12:01:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:57,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660423075] [2022-11-16 12:01:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:57,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:01:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:57,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660423075] [2022-11-16 12:01:57,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660423075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:57,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:57,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:01:57,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039069928] [2022-11-16 12:01:57,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:57,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:01:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:01:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:01:57,882 INFO L87 Difference]: Start difference. First operand 2169 states and 3167 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2022-11-16 12:01:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:59,693 INFO L93 Difference]: Finished difference Result 6250 states and 9180 transitions. [2022-11-16 12:01:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:01:59,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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 [2022-11-16 12:01:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:01:59,703 INFO L225 Difference]: With dead ends: 6250 [2022-11-16 12:01:59,703 INFO L226 Difference]: Without dead ends: 4194 [2022-11-16 12:01:59,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:01:59,707 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 788 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:01:59,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 450 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:01:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2022-11-16 12:02:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 2169. [2022-11-16 12:02:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.4603321033210332) internal successors, (3166), 2168 states have internal predecessors, (3166), 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) [2022-11-16 12:02:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3166 transitions. [2022-11-16 12:02:00,317 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3166 transitions. Word has length 70 [2022-11-16 12:02:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:00,317 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3166 transitions. [2022-11-16 12:02:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 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) [2022-11-16 12:02:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3166 transitions. [2022-11-16 12:02:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:02:00,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:00,319 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:00,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:02:00,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash -425050317, now seen corresponding path program 1 times [2022-11-16 12:02:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:00,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860193470] [2022-11-16 12:02:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:01,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:01,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860193470] [2022-11-16 12:02:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860193470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:01,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:01,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:02:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735610383] [2022-11-16 12:02:01,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:02:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:02:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:02:01,011 INFO L87 Difference]: Start difference. First operand 2169 states and 3166 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2022-11-16 12:02:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:05,917 INFO L93 Difference]: Finished difference Result 8965 states and 13192 transitions. [2022-11-16 12:02:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:02:05,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 71 [2022-11-16 12:02:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:05,932 INFO L225 Difference]: With dead ends: 8965 [2022-11-16 12:02:05,933 INFO L226 Difference]: Without dead ends: 8204 [2022-11-16 12:02:05,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:02:05,936 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1251 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:05,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1126 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:02:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2022-11-16 12:02:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 2148. [2022-11-16 12:02:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2147 states have (on average 1.4606427573358174) internal successors, (3136), 2147 states have internal predecessors, (3136), 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) [2022-11-16 12:02:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3136 transitions. [2022-11-16 12:02:07,025 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3136 transitions. Word has length 71 [2022-11-16 12:02:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:07,026 INFO L495 AbstractCegarLoop]: Abstraction has 2148 states and 3136 transitions. [2022-11-16 12:02:07,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2022-11-16 12:02:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3136 transitions. [2022-11-16 12:02:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:02:07,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:07,028 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:07,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:02:07,028 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1237414452, now seen corresponding path program 1 times [2022-11-16 12:02:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484093462] [2022-11-16 12:02:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:09,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484093462] [2022-11-16 12:02:09,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484093462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:09,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:09,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:02:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804910779] [2022-11-16 12:02:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:02:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:02:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:02:09,314 INFO L87 Difference]: Start difference. First operand 2148 states and 3136 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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) [2022-11-16 12:02:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:18,817 INFO L93 Difference]: Finished difference Result 10457 states and 15391 transitions. [2022-11-16 12:02:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:02:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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 71 [2022-11-16 12:02:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:18,843 INFO L225 Difference]: With dead ends: 10457 [2022-11-16 12:02:18,843 INFO L226 Difference]: Without dead ends: 9721 [2022-11-16 12:02:18,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=399, Invalid=2151, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 12:02:18,848 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1268 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:18,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 3439 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:02:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2022-11-16 12:02:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 2163. [2022-11-16 12:02:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.4583718778908419) internal successors, (3153), 2162 states have internal predecessors, (3153), 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) [2022-11-16 12:02:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3153 transitions. [2022-11-16 12:02:20,117 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3153 transitions. Word has length 71 [2022-11-16 12:02:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:20,117 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3153 transitions. [2022-11-16 12:02:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 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) [2022-11-16 12:02:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3153 transitions. [2022-11-16 12:02:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:02:20,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:20,119 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:02:20,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1749525204, now seen corresponding path program 1 times [2022-11-16 12:02:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:20,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675710221] [2022-11-16 12:02:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:21,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:21,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675710221] [2022-11-16 12:02:21,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675710221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:21,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:21,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:02:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536620743] [2022-11-16 12:02:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:21,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:02:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:02:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:02:21,916 INFO L87 Difference]: Start difference. First operand 2163 states and 3153 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 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) [2022-11-16 12:02:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:28,193 INFO L93 Difference]: Finished difference Result 6060 states and 8899 transitions. [2022-11-16 12:02:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:02:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 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 71 [2022-11-16 12:02:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:28,205 INFO L225 Difference]: With dead ends: 6060 [2022-11-16 12:02:28,206 INFO L226 Difference]: Without dead ends: 5324 [2022-11-16 12:02:28,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=415, Invalid=2447, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 12:02:28,209 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 775 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:28,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2935 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:02:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5324 states. [2022-11-16 12:02:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5324 to 2163. [2022-11-16 12:02:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.4574468085106382) internal successors, (3151), 2162 states have internal predecessors, (3151), 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) [2022-11-16 12:02:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3151 transitions. [2022-11-16 12:02:29,724 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3151 transitions. Word has length 71 [2022-11-16 12:02:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:29,724 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 3151 transitions. [2022-11-16 12:02:29,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 states have internal predecessors, (71), 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) [2022-11-16 12:02:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3151 transitions. [2022-11-16 12:02:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:02:29,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:29,726 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:29,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:02:29,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1430628756, now seen corresponding path program 1 times [2022-11-16 12:02:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:29,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92843899] [2022-11-16 12:02:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:30,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92843899] [2022-11-16 12:02:30,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92843899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:30,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:30,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:02:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018330795] [2022-11-16 12:02:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:02:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:02:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:02:30,475 INFO L87 Difference]: Start difference. First operand 2163 states and 3151 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2022-11-16 12:02:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:36,309 INFO L93 Difference]: Finished difference Result 8999 states and 13229 transitions. [2022-11-16 12:02:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:02:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) Word has length 72 [2022-11-16 12:02:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:36,319 INFO L225 Difference]: With dead ends: 8999 [2022-11-16 12:02:36,320 INFO L226 Difference]: Without dead ends: 8236 [2022-11-16 12:02:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:02:36,323 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1350 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:36,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 1331 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:02:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2022-11-16 12:02:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 2135. [2022-11-16 12:02:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 1.458294283036551) internal successors, (3112), 2134 states have internal predecessors, (3112), 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) [2022-11-16 12:02:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3112 transitions. [2022-11-16 12:02:37,884 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3112 transitions. Word has length 72 [2022-11-16 12:02:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:37,885 INFO L495 AbstractCegarLoop]: Abstraction has 2135 states and 3112 transitions. [2022-11-16 12:02:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 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) [2022-11-16 12:02:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3112 transitions. [2022-11-16 12:02:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:02:37,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:37,889 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:02:37,890 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1438947915, now seen corresponding path program 1 times [2022-11-16 12:02:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:37,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231309140] [2022-11-16 12:02:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231309140] [2022-11-16 12:02:38,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231309140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:38,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:38,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-16 12:02:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185416890] [2022-11-16 12:02:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:38,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:02:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:02:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:02:38,975 INFO L87 Difference]: Start difference. First operand 2135 states and 3112 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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) [2022-11-16 12:02:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:47,405 INFO L93 Difference]: Finished difference Result 10401 states and 15311 transitions. [2022-11-16 12:02:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:02:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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) Word has length 72 [2022-11-16 12:02:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:47,419 INFO L225 Difference]: With dead ends: 10401 [2022-11-16 12:02:47,420 INFO L226 Difference]: Without dead ends: 9655 [2022-11-16 12:02:47,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:02:47,424 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 550 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:47,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4239 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:02:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2022-11-16 12:02:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 2123. [2022-11-16 12:02:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.459000942507069) internal successors, (3096), 2122 states have internal predecessors, (3096), 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) [2022-11-16 12:02:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3096 transitions. [2022-11-16 12:02:49,119 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3096 transitions. Word has length 72 [2022-11-16 12:02:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:49,120 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3096 transitions. [2022-11-16 12:02:49,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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) [2022-11-16 12:02:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3096 transitions. [2022-11-16 12:02:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:02:49,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:49,121 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:02:49,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1545437633, now seen corresponding path program 1 times [2022-11-16 12:02:49,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:49,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723453985] [2022-11-16 12:02:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723453985] [2022-11-16 12:02:49,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723453985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:49,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:49,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:02:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689870163] [2022-11-16 12:02:49,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:49,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:49,275 INFO L87 Difference]: Start difference. First operand 2123 states and 3096 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-11-16 12:02:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:51,921 INFO L93 Difference]: Finished difference Result 4943 states and 7263 transitions. [2022-11-16 12:02:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:02:51,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) Word has length 72 [2022-11-16 12:02:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:51,925 INFO L225 Difference]: With dead ends: 4943 [2022-11-16 12:02:51,925 INFO L226 Difference]: Without dead ends: 2927 [2022-11-16 12:02:51,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:51,927 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 74 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:51,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 358 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:02:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-11-16 12:02:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2907. [2022-11-16 12:02:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2906 states have (on average 1.4532002752924982) internal successors, (4223), 2906 states have internal predecessors, (4223), 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) [2022-11-16 12:02:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 4223 transitions. [2022-11-16 12:02:54,044 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 4223 transitions. Word has length 72 [2022-11-16 12:02:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:54,044 INFO L495 AbstractCegarLoop]: Abstraction has 2907 states and 4223 transitions. [2022-11-16 12:02:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 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) [2022-11-16 12:02:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 4223 transitions. [2022-11-16 12:02:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:02:54,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:54,045 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:02:54,045 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:54,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -654506813, now seen corresponding path program 1 times [2022-11-16 12:02:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:54,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138776833] [2022-11-16 12:02:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:54,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138776833] [2022-11-16 12:02:54,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138776833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:54,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:54,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270065431] [2022-11-16 12:02:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:54,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:02:54,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:02:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:54,254 INFO L87 Difference]: Start difference. First operand 2907 states and 4223 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-11-16 12:02:57,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:57,476 INFO L93 Difference]: Finished difference Result 4515 states and 6551 transitions. [2022-11-16 12:02:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:57,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) Word has length 72 [2022-11-16 12:02:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:57,484 INFO L225 Difference]: With dead ends: 4515 [2022-11-16 12:02:57,484 INFO L226 Difference]: Without dead ends: 4513 [2022-11-16 12:02:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:57,486 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 142 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:57,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 611 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:02:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2022-11-16 12:02:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 2927. [2022-11-16 12:02:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4425837320574162) internal successors, (4221), 2926 states have internal predecessors, (4221), 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) [2022-11-16 12:02:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4221 transitions. [2022-11-16 12:02:59,709 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4221 transitions. Word has length 72 [2022-11-16 12:02:59,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:59,710 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 4221 transitions. [2022-11-16 12:02:59,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2022-11-16 12:02:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4221 transitions. [2022-11-16 12:02:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:02:59,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:59,711 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:02:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:02:59,712 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1371390844, now seen corresponding path program 1 times [2022-11-16 12:02:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367054450] [2022-11-16 12:02:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:01,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367054450] [2022-11-16 12:03:01,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367054450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:01,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:01,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 12:03:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673845506] [2022-11-16 12:03:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:01,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:03:01,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:03:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:03:01,009 INFO L87 Difference]: Start difference. First operand 2927 states and 4221 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 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) [2022-11-16 12:03:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:10,288 INFO L93 Difference]: Finished difference Result 10637 states and 15436 transitions. [2022-11-16 12:03:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:03:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 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) Word has length 72 [2022-11-16 12:03:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:10,297 INFO L225 Difference]: With dead ends: 10637 [2022-11-16 12:03:10,297 INFO L226 Difference]: Without dead ends: 8207 [2022-11-16 12:03:10,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=384, Invalid=1968, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 12:03:10,300 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 571 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:10,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 3916 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:03:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2022-11-16 12:03:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 2935. [2022-11-16 12:03:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2934 states have (on average 1.4413769597818678) internal successors, (4229), 2934 states have internal predecessors, (4229), 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) [2022-11-16 12:03:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 4229 transitions. [2022-11-16 12:03:12,254 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 4229 transitions. Word has length 72 [2022-11-16 12:03:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:12,254 INFO L495 AbstractCegarLoop]: Abstraction has 2935 states and 4229 transitions. [2022-11-16 12:03:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 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) [2022-11-16 12:03:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 4229 transitions. [2022-11-16 12:03:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:03:12,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:12,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:12,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:03:12,256 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash 838067914, now seen corresponding path program 1 times [2022-11-16 12:03:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:12,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032471971] [2022-11-16 12:03:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:13,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:13,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032471971] [2022-11-16 12:03:13,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032471971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:13,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:13,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:03:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155374529] [2022-11-16 12:03:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:13,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:03:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:03:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:03:13,444 INFO L87 Difference]: Start difference. First operand 2935 states and 4229 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2022-11-16 12:03:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:33,513 INFO L93 Difference]: Finished difference Result 18758 states and 27312 transitions. [2022-11-16 12:03:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:03:33,514 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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 73 [2022-11-16 12:03:33,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:33,534 INFO L225 Difference]: With dead ends: 18758 [2022-11-16 12:03:33,534 INFO L226 Difference]: Without dead ends: 17841 [2022-11-16 12:03:33,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=326, Invalid=1234, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:03:33,538 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1589 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 4409 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:33,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 4409 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:03:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17841 states. [2022-11-16 12:03:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17841 to 2934. [2022-11-16 12:03:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2933 states have (on average 1.4411864984657348) internal successors, (4227), 2933 states have internal predecessors, (4227), 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) [2022-11-16 12:03:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4227 transitions. [2022-11-16 12:03:36,095 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4227 transitions. Word has length 73 [2022-11-16 12:03:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:36,095 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4227 transitions. [2022-11-16 12:03:36,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2022-11-16 12:03:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4227 transitions. [2022-11-16 12:03:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:03:36,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:36,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:36,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:03:36,097 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 368393840, now seen corresponding path program 1 times [2022-11-16 12:03:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:36,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912324957] [2022-11-16 12:03:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:36,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912324957] [2022-11-16 12:03:36,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912324957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:36,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:36,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:03:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770803556] [2022-11-16 12:03:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:03:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:03:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:03:36,729 INFO L87 Difference]: Start difference. First operand 2934 states and 4227 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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) [2022-11-16 12:03:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:43,093 INFO L93 Difference]: Finished difference Result 6682 states and 9677 transitions. [2022-11-16 12:03:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:03:43,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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 73 [2022-11-16 12:03:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:43,101 INFO L225 Difference]: With dead ends: 6682 [2022-11-16 12:03:43,101 INFO L226 Difference]: Without dead ends: 5751 [2022-11-16 12:03:43,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:03:43,104 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 723 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:43,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1186 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:03:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-11-16 12:03:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 2919. [2022-11-16 12:03:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2918 states have (on average 1.4424263193968472) internal successors, (4209), 2918 states have internal predecessors, (4209), 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) [2022-11-16 12:03:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 4209 transitions. [2022-11-16 12:03:45,583 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 4209 transitions. Word has length 73 [2022-11-16 12:03:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:45,584 INFO L495 AbstractCegarLoop]: Abstraction has 2919 states and 4209 transitions. [2022-11-16 12:03:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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) [2022-11-16 12:03:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 4209 transitions. [2022-11-16 12:03:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:03:45,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:45,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:03:45,586 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1038038315, now seen corresponding path program 1 times [2022-11-16 12:03:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030582941] [2022-11-16 12:03:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030582941] [2022-11-16 12:03:46,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030582941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:46,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:46,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:03:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703390321] [2022-11-16 12:03:46,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:46,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:03:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:03:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:03:46,435 INFO L87 Difference]: Start difference. First operand 2919 states and 4209 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2022-11-16 12:04:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:05,703 INFO L93 Difference]: Finished difference Result 17952 states and 26065 transitions. [2022-11-16 12:04:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:04:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 73 [2022-11-16 12:04:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:05,723 INFO L225 Difference]: With dead ends: 17952 [2022-11-16 12:04:05,723 INFO L226 Difference]: Without dead ends: 17035 [2022-11-16 12:04:05,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:04:05,727 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1029 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:05,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 2454 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:04:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2022-11-16 12:04:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 2912. [2022-11-16 12:04:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2911 states have (on average 1.4428031604259706) internal successors, (4200), 2911 states have internal predecessors, (4200), 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) [2022-11-16 12:04:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4200 transitions. [2022-11-16 12:04:08,727 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4200 transitions. Word has length 73 [2022-11-16 12:04:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:08,728 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 4200 transitions. [2022-11-16 12:04:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2022-11-16 12:04:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4200 transitions. [2022-11-16 12:04:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:04:08,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:08,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:04:08,732 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 272069267, now seen corresponding path program 1 times [2022-11-16 12:04:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:08,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453655749] [2022-11-16 12:04:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:08,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:08,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453655749] [2022-11-16 12:04:08,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453655749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:08,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:08,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:04:08,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237798091] [2022-11-16 12:04:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:08,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:08,825 INFO L87 Difference]: Start difference. First operand 2912 states and 4200 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-16 12:04:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:14,276 INFO L93 Difference]: Finished difference Result 6914 states and 10057 transitions. [2022-11-16 12:04:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:14,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-11-16 12:04:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:14,281 INFO L225 Difference]: With dead ends: 6914 [2022-11-16 12:04:14,281 INFO L226 Difference]: Without dead ends: 4486 [2022-11-16 12:04:14,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:04:14,284 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 273 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:14,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 196 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:04:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-11-16 12:04:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 2486. [2022-11-16 12:04:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.4402414486921529) internal successors, (3579), 2485 states have internal predecessors, (3579), 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) [2022-11-16 12:04:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3579 transitions. [2022-11-16 12:04:17,276 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3579 transitions. Word has length 98 [2022-11-16 12:04:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3579 transitions. [2022-11-16 12:04:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-11-16 12:04:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3579 transitions. [2022-11-16 12:04:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:04:17,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:17,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:17,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:04:17,280 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2048576078, now seen corresponding path program 1 times [2022-11-16 12:04:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:17,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451486759] [2022-11-16 12:04:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:17,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:17,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451486759] [2022-11-16 12:04:17,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451486759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:17,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:17,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:17,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334729723] [2022-11-16 12:04:17,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:17,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:17,473 INFO L87 Difference]: Start difference. First operand 2486 states and 3579 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:04:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:30,245 INFO L93 Difference]: Finished difference Result 12428 states and 17869 transitions. [2022-11-16 12:04:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:04:30,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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 98 [2022-11-16 12:04:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:30,256 INFO L225 Difference]: With dead ends: 12428 [2022-11-16 12:04:30,256 INFO L226 Difference]: Without dead ends: 10022 [2022-11-16 12:04:30,259 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:04:30,259 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1126 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:30,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 302 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:04:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-11-16 12:04:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 5420. [2022-11-16 12:04:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 5419 states have (on average 1.4417789260011071) internal successors, (7813), 5419 states have internal predecessors, (7813), 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) [2022-11-16 12:04:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 7813 transitions. [2022-11-16 12:04:36,416 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 7813 transitions. Word has length 98 [2022-11-16 12:04:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:36,417 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 7813 transitions. [2022-11-16 12:04:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:04:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 7813 transitions. [2022-11-16 12:04:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:04:36,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:36,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:36,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:04:36,420 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1823822764, now seen corresponding path program 1 times [2022-11-16 12:04:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:36,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748171443] [2022-11-16 12:04:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:36,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:36,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748171443] [2022-11-16 12:04:36,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748171443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:36,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:36,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910677002] [2022-11-16 12:04:36,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:36,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:36,574 INFO L87 Difference]: Start difference. First operand 5420 states and 7813 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:04:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:58,196 INFO L93 Difference]: Finished difference Result 24410 states and 35235 transitions. [2022-11-16 12:04:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:04:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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 98 [2022-11-16 12:04:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:58,220 INFO L225 Difference]: With dead ends: 24410 [2022-11-16 12:04:58,220 INFO L226 Difference]: Without dead ends: 19070 [2022-11-16 12:04:58,226 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:04:58,227 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1301 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:58,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 296 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:04:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19070 states. [2022-11-16 12:05:11,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19070 to 11818. [2022-11-16 12:05:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11818 states, 11817 states have (on average 1.4405517474824405) internal successors, (17023), 11817 states have internal predecessors, (17023), 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) [2022-11-16 12:05:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11818 states to 11818 states and 17023 transitions. [2022-11-16 12:05:11,177 INFO L78 Accepts]: Start accepts. Automaton has 11818 states and 17023 transitions. Word has length 98 [2022-11-16 12:05:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:11,177 INFO L495 AbstractCegarLoop]: Abstraction has 11818 states and 17023 transitions. [2022-11-16 12:05:11,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:05:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11818 states and 17023 transitions. [2022-11-16 12:05:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:05:11,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:11,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:11,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:05:11,181 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:11,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -362244390, now seen corresponding path program 1 times [2022-11-16 12:05:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:11,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272833763] [2022-11-16 12:05:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:11,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272833763] [2022-11-16 12:05:11,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272833763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:11,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:11,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:05:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747242011] [2022-11-16 12:05:11,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:11,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:11,336 INFO L87 Difference]: Start difference. First operand 11818 states and 17023 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:05:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:49,211 INFO L93 Difference]: Finished difference Result 43938 states and 63465 transitions. [2022-11-16 12:05:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:05:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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 98 [2022-11-16 12:05:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:49,370 INFO L225 Difference]: With dead ends: 43938 [2022-11-16 12:05:49,370 INFO L226 Difference]: Without dead ends: 32200 [2022-11-16 12:05:49,381 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:05:49,382 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1025 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:49,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 372 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:05:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32200 states. [2022-11-16 12:06:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32200 to 19092. [2022-11-16 12:06:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19092 states, 19091 states have (on average 1.4434550311665182) internal successors, (27557), 19091 states have internal predecessors, (27557), 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) [2022-11-16 12:06:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19092 states to 19092 states and 27557 transitions. [2022-11-16 12:06:10,619 INFO L78 Accepts]: Start accepts. Automaton has 19092 states and 27557 transitions. Word has length 98 [2022-11-16 12:06:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:10,620 INFO L495 AbstractCegarLoop]: Abstraction has 19092 states and 27557 transitions. [2022-11-16 12:06:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 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) [2022-11-16 12:06:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 19092 states and 27557 transitions. [2022-11-16 12:06:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:06:10,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:10,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:10,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:06:10,622 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1915666314, now seen corresponding path program 1 times [2022-11-16 12:06:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15495498] [2022-11-16 12:06:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:10,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:06:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15495498] [2022-11-16 12:06:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15495498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:10,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:10,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29892883] [2022-11-16 12:06:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:10,745 INFO L87 Difference]: Start difference. First operand 19092 states and 27557 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-16 12:06:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:31,607 INFO L93 Difference]: Finished difference Result 35192 states and 50791 transitions. [2022-11-16 12:06:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:06:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-11-16 12:06:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:31,632 INFO L225 Difference]: With dead ends: 35192 [2022-11-16 12:06:31,632 INFO L226 Difference]: Without dead ends: 18125 [2022-11-16 12:06:31,644 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:06:31,644 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 66 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:31,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:06:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18125 states. [2022-11-16 12:06:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18125 to 18123. [2022-11-16 12:06:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18123 states, 18122 states have (on average 1.4282639885222381) internal successors, (25883), 18122 states have internal predecessors, (25883), 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) [2022-11-16 12:06:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18123 states to 18123 states and 25883 transitions. [2022-11-16 12:06:52,780 INFO L78 Accepts]: Start accepts. Automaton has 18123 states and 25883 transitions. Word has length 98 [2022-11-16 12:06:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:52,780 INFO L495 AbstractCegarLoop]: Abstraction has 18123 states and 25883 transitions. [2022-11-16 12:06:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-16 12:06:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18123 states and 25883 transitions. [2022-11-16 12:06:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 12:06:52,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:52,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:52,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:06:52,786 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2121849076, now seen corresponding path program 1 times [2022-11-16 12:06:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:52,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749561074] [2022-11-16 12:06:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:52,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 12:06:52,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:52,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749561074] [2022-11-16 12:06:52,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749561074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:52,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:52,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554970214] [2022-11-16 12:06:52,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:06:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:06:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:06:52,941 INFO L87 Difference]: Start difference. First operand 18123 states and 25883 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-11-16 12:07:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:12,248 INFO L93 Difference]: Finished difference Result 34537 states and 49209 transitions. [2022-11-16 12:07:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 122 [2022-11-16 12:07:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:12,271 INFO L225 Difference]: With dead ends: 34537 [2022-11-16 12:07:12,271 INFO L226 Difference]: Without dead ends: 16508 [2022-11-16 12:07:12,285 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:07:12,285 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 62 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:12,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 316 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16508 states. [2022-11-16 12:07:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16508 to 16016. [2022-11-16 12:07:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16016 states, 16015 states have (on average 1.4117389946924759) internal successors, (22609), 16015 states have internal predecessors, (22609), 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) [2022-11-16 12:07:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16016 states to 16016 states and 22609 transitions. [2022-11-16 12:07:30,700 INFO L78 Accepts]: Start accepts. Automaton has 16016 states and 22609 transitions. Word has length 122 [2022-11-16 12:07:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:30,700 INFO L495 AbstractCegarLoop]: Abstraction has 16016 states and 22609 transitions. [2022-11-16 12:07:30,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-11-16 12:07:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16016 states and 22609 transitions. [2022-11-16 12:07:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:07:30,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:30,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:30,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:07:30,705 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 748990348, now seen corresponding path program 1 times [2022-11-16 12:07:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315993238] [2022-11-16 12:07:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:07:30,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315993238] [2022-11-16 12:07:30,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315993238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:30,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:30,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111735705] [2022-11-16 12:07:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:30,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:30,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:30,849 INFO L87 Difference]: Start difference. First operand 16016 states and 22609 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-16 12:07:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:49,071 INFO L93 Difference]: Finished difference Result 30371 states and 42725 transitions. [2022-11-16 12:07:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:49,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 123 [2022-11-16 12:07:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:49,091 INFO L225 Difference]: With dead ends: 30371 [2022-11-16 12:07:49,091 INFO L226 Difference]: Without dead ends: 14443 [2022-11-16 12:07:49,101 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:07:49,102 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 55 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:49,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 316 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14443 states. [2022-11-16 12:08:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14443 to 13991. [2022-11-16 12:08:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13991 states, 13990 states have (on average 1.3909220872051464) internal successors, (19459), 13990 states have internal predecessors, (19459), 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) [2022-11-16 12:08:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13991 states to 13991 states and 19459 transitions. [2022-11-16 12:08:06,639 INFO L78 Accepts]: Start accepts. Automaton has 13991 states and 19459 transitions. Word has length 123 [2022-11-16 12:08:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:06,639 INFO L495 AbstractCegarLoop]: Abstraction has 13991 states and 19459 transitions. [2022-11-16 12:08:06,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-16 12:08:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13991 states and 19459 transitions. [2022-11-16 12:08:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:08:06,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:06,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:08:06,643 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -396013257, now seen corresponding path program 1 times [2022-11-16 12:08:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483362981] [2022-11-16 12:08:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:08:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:06,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483362981] [2022-11-16 12:08:06,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483362981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:06,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:06,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:08:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977025486] [2022-11-16 12:08:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:08:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:08:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:08:06,815 INFO L87 Difference]: Start difference. First operand 13991 states and 19459 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-11-16 12:08:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:41,097 INFO L93 Difference]: Finished difference Result 40147 states and 55489 transitions. [2022-11-16 12:08:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:08:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 124 [2022-11-16 12:08:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:41,135 INFO L225 Difference]: With dead ends: 40147 [2022-11-16 12:08:41,136 INFO L226 Difference]: Without dead ends: 26244 [2022-11-16 12:08:41,148 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:08:41,148 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 48 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:41,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 318 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26244 states. [2022-11-16 12:09:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26244 to 24142. [2022-11-16 12:09:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24142 states, 24141 states have (on average 1.3720641232757549) internal successors, (33123), 24141 states have internal predecessors, (33123), 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) [2022-11-16 12:09:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24142 states to 24142 states and 33123 transitions. [2022-11-16 12:09:12,276 INFO L78 Accepts]: Start accepts. Automaton has 24142 states and 33123 transitions. Word has length 124 [2022-11-16 12:09:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:12,276 INFO L495 AbstractCegarLoop]: Abstraction has 24142 states and 33123 transitions. [2022-11-16 12:09:12,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-11-16 12:09:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24142 states and 33123 transitions. [2022-11-16 12:09:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:09:12,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:12,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:09:12,281 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash 543916073, now seen corresponding path program 1 times [2022-11-16 12:09:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:12,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621666326] [2022-11-16 12:09:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:12,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:12,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621666326] [2022-11-16 12:09:12,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621666326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:12,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:12,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742785156] [2022-11-16 12:09:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:12,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:12,408 INFO L87 Difference]: Start difference. First operand 24142 states and 33123 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-16 12:09:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:39,177 INFO L93 Difference]: Finished difference Result 44138 states and 60354 transitions. [2022-11-16 12:09:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:39,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-11-16 12:09:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:39,203 INFO L225 Difference]: With dead ends: 44138 [2022-11-16 12:09:39,203 INFO L226 Difference]: Without dead ends: 20084 [2022-11-16 12:09:39,217 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:09:39,218 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:39,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 295 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20084 states. [2022-11-16 12:10:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20084 to 19746. [2022-11-16 12:10:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19746 states, 19745 states have (on average 1.3448974423904787) internal successors, (26555), 19745 states have internal predecessors, (26555), 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) [2022-11-16 12:10:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19746 states to 19746 states and 26555 transitions. [2022-11-16 12:10:06,216 INFO L78 Accepts]: Start accepts. Automaton has 19746 states and 26555 transitions. Word has length 125 [2022-11-16 12:10:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:06,216 INFO L495 AbstractCegarLoop]: Abstraction has 19746 states and 26555 transitions. [2022-11-16 12:10:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-11-16 12:10:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 19746 states and 26555 transitions. [2022-11-16 12:10:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:10:06,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:06,220 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:06,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:10:06,221 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:10:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash 874640977, now seen corresponding path program 1 times [2022-11-16 12:10:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:06,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886579412] [2022-11-16 12:10:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886579412] [2022-11-16 12:10:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886579412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:07,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465264512] [2022-11-16 12:10:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:07,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:07,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:10:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:07,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:10:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:18,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465264512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:22,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33 [2022-11-16 12:10:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314417299] [2022-11-16 12:10:22,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:10:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:10:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1011, Unknown=3, NotChecked=0, Total=1122 [2022-11-16 12:10:22,539 INFO L87 Difference]: Start difference. First operand 19746 states and 26555 transitions. Second operand has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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) [2022-11-16 12:14:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:22,166 INFO L93 Difference]: Finished difference Result 42533 states and 56851 transitions. [2022-11-16 12:14:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:14:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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 125 [2022-11-16 12:14:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:22,196 INFO L225 Difference]: With dead ends: 42533 [2022-11-16 12:14:22,196 INFO L226 Difference]: Without dead ends: 22907 [2022-11-16 12:14:22,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 208.3s TimeCoverageRelationStatistics Valid=987, Invalid=4545, Unknown=18, NotChecked=0, Total=5550 [2022-11-16 12:14:22,210 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1986 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:22,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 1836 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1878 Invalid, 0 Unknown, 220 Unchecked, 3.7s Time] [2022-11-16 12:14:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2022-11-16 12:14:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 19889. [2022-11-16 12:14:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19889 states, 19888 states have (on average 1.3435740144810941) internal successors, (26721), 19888 states have internal predecessors, (26721), 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) [2022-11-16 12:14:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19889 states to 19889 states and 26721 transitions. [2022-11-16 12:14:50,021 INFO L78 Accepts]: Start accepts. Automaton has 19889 states and 26721 transitions. Word has length 125 [2022-11-16 12:14:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:50,022 INFO L495 AbstractCegarLoop]: Abstraction has 19889 states and 26721 transitions. [2022-11-16 12:14:50,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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) [2022-11-16 12:14:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 19889 states and 26721 transitions. [2022-11-16 12:14:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-16 12:14:50,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:50,025 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:50,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:14:50,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:50,233 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1597603430, now seen corresponding path program 1 times [2022-11-16 12:14:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:50,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719233416] [2022-11-16 12:14:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:51,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:51,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719233416] [2022-11-16 12:14:51,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719233416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:51,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409249061] [2022-11-16 12:14:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:51,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:51,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:51,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4530d81e-8ad3-4d63-95c3-0e1657275f96/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:14:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:51,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:14:51,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:14:53,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:14:54,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409249061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:54,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:54,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 9] total 27 [2022-11-16 12:14:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313083793] [2022-11-16 12:14:54,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:54,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:14:54,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:14:54,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:14:54,851 INFO L87 Difference]: Start difference. First operand 19889 states and 26721 transitions. Second operand has 27 states, 27 states have (on average 13.222222222222221) internal successors, (357), 27 states have internal predecessors, (357), 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)