./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a --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 dc5c360927b8f961c81c15f32a759fd4b0c6971bec3efffa8564070a88946c3e --- 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-b5237d8 [2022-11-21 09:03:43,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:03:43,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:03:43,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:03:43,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:03:43,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:03:43,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:03:43,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:03:43,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:03:43,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:03:43,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:03:43,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:03:43,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:03:43,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:03:43,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:03:43,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:03:43,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:03:43,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:03:43,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:03:43,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:03:43,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:03:43,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:03:43,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:03:43,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:03:43,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:03:43,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:03:43,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:03:43,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:03:43,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:03:43,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:03:43,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:03:43,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:03:43,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:03:43,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:03:43,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:03:43,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:03:43,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:03:43,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:03:43,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:03:43,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:03:43,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:03:43,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:03:43,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:03:43,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:03:43,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:03:43,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:03:43,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:03:43,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:03:43,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:03:43,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:03:43,979 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:03:43,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:03:43,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:03:43,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:03:43,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:03:43,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:03:43,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:03:43,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:03:43,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:03:43,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:03:43,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:03:43,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:03:43,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:03:43,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:03:43,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:03:43,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:03:43,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:43,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:03:43,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:03:43,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:03:43,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:03:43,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:03:43,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:03:43,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:03:43,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:03:43,988 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_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc5c360927b8f961c81c15f32a759fd4b0c6971bec3efffa8564070a88946c3e [2022-11-21 09:03:44,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:03:44,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:03:44,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:03:44,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:03:44,450 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:03:44,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-21 09:03:48,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:03:48,427 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:03:48,428 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-21 09:03:48,447 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/data/da646c624/e834bdca09194ce6ae30acafb96f5e88/FLAGedcbdc065 [2022-11-21 09:03:48,470 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/data/da646c624/e834bdca09194ce6ae30acafb96f5e88 [2022-11-21 09:03:48,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:03:48,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:03:48,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:48,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:03:48,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:03:48,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24178329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:48, skipping insertion in model container [2022-11-21 09:03:48,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:48" (1/1) ... [2022-11-21 09:03:48,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:03:48,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:03:48,864 WARN L237 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_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c[12914,12927] [2022-11-21 09:03:48,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:48,883 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:03:49,004 WARN L237 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_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c[12914,12927] [2022-11-21 09:03:49,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:03:49,038 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:03:49,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49 WrapperNode [2022-11-21 09:03:49,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:03:49,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:49,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:03:49,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:03:49,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,144 INFO L138 Inliner]: procedures = 22, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2022-11-21 09:03:49,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:03:49,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:03:49,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:03:49,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:03:49,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:03:49,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:03:49,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:03:49,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:03:49,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (1/1) ... [2022-11-21 09:03:49,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:03:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:03:49,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:03:49,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f68f074-1bb8-4b69-97ba-2e0cc5a497a4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:03:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:03:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:03:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:03:49,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:03:49,477 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:03:49,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:03:50,284 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:03:50,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:03:50,294 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:03:50,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:50 BoogieIcfgContainer [2022-11-21 09:03:50,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:03:50,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:03:50,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:03:50,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:03:50,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:48" (1/3) ... [2022-11-21 09:03:50,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38b1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:50, skipping insertion in model container [2022-11-21 09:03:50,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:49" (2/3) ... [2022-11-21 09:03:50,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38b1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:50, skipping insertion in model container [2022-11-21 09:03:50,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:50" (3/3) ... [2022-11-21 09:03:50,309 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-21 09:03:50,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:03:50,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:03:50,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:03:50,404 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;@65056db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:03:50,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:03:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 09:03:50,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:50,421 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] [2022-11-21 09:03:50,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1506824827, now seen corresponding path program 1 times [2022-11-21 09:03:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:50,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938900238] [2022-11-21 09:03:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:50,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938900238] [2022-11-21 09:03:50,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938900238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:50,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:50,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:03:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818256037] [2022-11-21 09:03:50,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:03:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:03:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:03:50,826 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:50,887 INFO L93 Difference]: Finished difference Result 190 states and 331 transitions. [2022-11-21 09:03:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:03:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-21 09:03:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:50,901 INFO L225 Difference]: With dead ends: 190 [2022-11-21 09:03:50,901 INFO L226 Difference]: Without dead ends: 121 [2022-11-21 09:03:50,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:03:50,908 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:50,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-21 09:03:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-21 09:03:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.7583333333333333) internal successors, (211), 120 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) [2022-11-21 09:03:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 211 transitions. [2022-11-21 09:03:50,982 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 211 transitions. Word has length 37 [2022-11-21 09:03:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 211 transitions. [2022-11-21 09:03:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 211 transitions. [2022-11-21 09:03:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 09:03:50,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:50,986 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] [2022-11-21 09:03:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:03:50,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:50,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash 689176377, now seen corresponding path program 1 times [2022-11-21 09:03:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:50,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385613780] [2022-11-21 09:03:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385613780] [2022-11-21 09:03:51,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385613780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:51,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:51,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751800234] [2022-11-21 09:03:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:51,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:03:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:03:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:51,351 INFO L87 Difference]: Start difference. First operand 121 states and 211 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:51,521 INFO L93 Difference]: Finished difference Result 189 states and 324 transitions. [2022-11-21 09:03:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:03:51,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-21 09:03:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:51,525 INFO L225 Difference]: With dead ends: 189 [2022-11-21 09:03:51,526 INFO L226 Difference]: Without dead ends: 121 [2022-11-21 09:03:51,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:03:51,529 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 112 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:51,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 695 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-21 09:03:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-21 09:03:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 120 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2022-11-21 09:03:51,550 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 37 [2022-11-21 09:03:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:51,551 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2022-11-21 09:03:51,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2022-11-21 09:03:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 09:03:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:51,554 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] [2022-11-21 09:03:51,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:03:51,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:51,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash 500395394, now seen corresponding path program 1 times [2022-11-21 09:03:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:51,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65570368] [2022-11-21 09:03:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:51,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65570368] [2022-11-21 09:03:51,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65570368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:51,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:51,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328683914] [2022-11-21 09:03:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:51,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:51,721 INFO L87 Difference]: Start difference. First operand 121 states and 184 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) [2022-11-21 09:03:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:51,790 INFO L93 Difference]: Finished difference Result 240 states and 385 transitions. [2022-11-21 09:03:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:51,790 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 [2022-11-21 09:03:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:51,792 INFO L225 Difference]: With dead ends: 240 [2022-11-21 09:03:51,793 INFO L226 Difference]: Without dead ends: 176 [2022-11-21 09:03:51,793 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 [2022-11-21 09:03:51,795 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 83 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:51,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 319 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-21 09:03:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2022-11-21 09:03:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.558139534883721) internal successors, (268), 172 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 268 transitions. [2022-11-21 09:03:51,815 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 268 transitions. Word has length 63 [2022-11-21 09:03:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:51,816 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 268 transitions. [2022-11-21 09:03:51,816 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) [2022-11-21 09:03:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 268 transitions. [2022-11-21 09:03:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 09:03:51,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:51,818 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] [2022-11-21 09:03:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:03:51,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 634628362, now seen corresponding path program 1 times [2022-11-21 09:03:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428305106] [2022-11-21 09:03:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:52,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428305106] [2022-11-21 09:03:52,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428305106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:52,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:52,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348364327] [2022-11-21 09:03:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:52,014 INFO L87 Difference]: Start difference. First operand 173 states and 268 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:52,058 INFO L93 Difference]: Finished difference Result 391 states and 628 transitions. [2022-11-21 09:03:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-21 09:03:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:52,061 INFO L225 Difference]: With dead ends: 391 [2022-11-21 09:03:52,062 INFO L226 Difference]: Without dead ends: 275 [2022-11-21 09:03:52,062 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 [2022-11-21 09:03:52,064 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 85 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:52,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 332 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-21 09:03:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2022-11-21 09:03:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 270 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 428 transitions. [2022-11-21 09:03:52,095 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 428 transitions. Word has length 65 [2022-11-21 09:03:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:52,096 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 428 transitions. [2022-11-21 09:03:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 428 transitions. [2022-11-21 09:03:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 09:03:52,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:52,100 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] [2022-11-21 09:03:52,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:03:52,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1765336754, now seen corresponding path program 1 times [2022-11-21 09:03:52,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:52,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410283314] [2022-11-21 09:03:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:52,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410283314] [2022-11-21 09:03:52,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410283314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:52,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:52,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131809931] [2022-11-21 09:03:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:52,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:52,326 INFO L87 Difference]: Start difference. First operand 271 states and 428 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-11-21 09:03:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:52,462 INFO L93 Difference]: Finished difference Result 671 states and 1082 transitions. [2022-11-21 09:03:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2022-11-21 09:03:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:52,468 INFO L225 Difference]: With dead ends: 671 [2022-11-21 09:03:52,469 INFO L226 Difference]: Without dead ends: 457 [2022-11-21 09:03:52,474 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 [2022-11-21 09:03:52,482 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 79 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:52,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 333 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-21 09:03:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 451. [2022-11-21 09:03:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.5911111111111111) internal successors, (716), 450 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 716 transitions. [2022-11-21 09:03:52,547 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 716 transitions. Word has length 67 [2022-11-21 09:03:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:52,550 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 716 transitions. [2022-11-21 09:03:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-11-21 09:03:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 716 transitions. [2022-11-21 09:03:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 09:03:52,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:52,567 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] [2022-11-21 09:03:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:03:52,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:52,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1263831096, now seen corresponding path program 1 times [2022-11-21 09:03:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:52,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698860390] [2022-11-21 09:03:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698860390] [2022-11-21 09:03:52,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698860390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454798474] [2022-11-21 09:03:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:03:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:03:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:52,867 INFO L87 Difference]: Start difference. First operand 451 states and 716 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-11-21 09:03:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:53,128 INFO L93 Difference]: Finished difference Result 1907 states and 3134 transitions. [2022-11-21 09:03:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:03:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2022-11-21 09:03:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:53,140 INFO L225 Difference]: With dead ends: 1907 [2022-11-21 09:03:53,141 INFO L226 Difference]: Without dead ends: 1513 [2022-11-21 09:03:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:03:53,151 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 735 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:53,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 991 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-11-21 09:03:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 795. [2022-11-21 09:03:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.6083123425692696) internal successors, (1277), 794 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1277 transitions. [2022-11-21 09:03:53,245 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1277 transitions. Word has length 69 [2022-11-21 09:03:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:53,247 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1277 transitions. [2022-11-21 09:03:53,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-11-21 09:03:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1277 transitions. [2022-11-21 09:03:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 09:03:53,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:53,251 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] [2022-11-21 09:03:53,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:03:53,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1398774354, now seen corresponding path program 1 times [2022-11-21 09:03:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387179140] [2022-11-21 09:03:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387179140] [2022-11-21 09:03:53,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387179140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:53,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:53,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:03:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129525439] [2022-11-21 09:03:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:53,437 INFO L87 Difference]: Start difference. First operand 795 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-11-21 09:03:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:53,645 INFO L93 Difference]: Finished difference Result 2309 states and 3785 transitions. [2022-11-21 09:03:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 [2022-11-21 09:03:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:53,657 INFO L225 Difference]: With dead ends: 2309 [2022-11-21 09:03:53,657 INFO L226 Difference]: Without dead ends: 1571 [2022-11-21 09:03:53,659 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 [2022-11-21 09:03:53,662 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:53,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 588 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-21 09:03:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1174. [2022-11-21 09:03:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.6206308610400681) internal successors, (1901), 1173 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1901 transitions. [2022-11-21 09:03:53,760 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1901 transitions. Word has length 70 [2022-11-21 09:03:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:53,760 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1901 transitions. [2022-11-21 09:03:53,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2022-11-21 09:03:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1901 transitions. [2022-11-21 09:03:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 09:03:53,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:53,763 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] [2022-11-21 09:03:53,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:03:53,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2128806959, now seen corresponding path program 1 times [2022-11-21 09:03:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:53,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536591127] [2022-11-21 09:03:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:53,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536591127] [2022-11-21 09:03:53,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536591127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:53,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:53,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:03:53,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004036982] [2022-11-21 09:03:53,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:53,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:53,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:53,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:53,945 INFO L87 Difference]: Start difference. First operand 1174 states and 1901 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2022-11-21 09:03:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:54,189 INFO L93 Difference]: Finished difference Result 3397 states and 5563 transitions. [2022-11-21 09:03:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:54,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 [2022-11-21 09:03:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:54,199 INFO L225 Difference]: With dead ends: 3397 [2022-11-21 09:03:54,199 INFO L226 Difference]: Without dead ends: 2280 [2022-11-21 09:03:54,201 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 [2022-11-21 09:03:54,203 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 309 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:54,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 589 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-21 09:03:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1715. [2022-11-21 09:03:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.6207701283547258) internal successors, (2778), 1714 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2778 transitions. [2022-11-21 09:03:54,353 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2778 transitions. Word has length 71 [2022-11-21 09:03:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:54,353 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2778 transitions. [2022-11-21 09:03:54,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2022-11-21 09:03:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2778 transitions. [2022-11-21 09:03:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 09:03:54,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:54,356 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] [2022-11-21 09:03:54,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:03:54,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -16317691, now seen corresponding path program 1 times [2022-11-21 09:03:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:54,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767977728] [2022-11-21 09:03:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:54,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767977728] [2022-11-21 09:03:54,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767977728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:54,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:54,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:03:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357241957] [2022-11-21 09:03:54,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:03:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:03:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:03:54,465 INFO L87 Difference]: Start difference. First operand 1715 states and 2778 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) [2022-11-21 09:03:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:54,745 INFO L93 Difference]: Finished difference Result 4945 states and 8083 transitions. [2022-11-21 09:03:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:03:54,746 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 [2022-11-21 09:03:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:54,759 INFO L225 Difference]: With dead ends: 4945 [2022-11-21 09:03:54,759 INFO L226 Difference]: Without dead ends: 3287 [2022-11-21 09:03:54,762 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 [2022-11-21 09:03:54,763 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:54,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 598 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:03:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2022-11-21 09:03:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2485. [2022-11-21 09:03:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 1.6191626409017714) internal successors, (4022), 2484 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4022 transitions. [2022-11-21 09:03:55,042 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4022 transitions. Word has length 72 [2022-11-21 09:03:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:55,043 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 4022 transitions. [2022-11-21 09:03:55,043 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) [2022-11-21 09:03:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4022 transitions. [2022-11-21 09:03:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 09:03:55,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:55,045 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] [2022-11-21 09:03:55,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:03:55,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2114412097, now seen corresponding path program 1 times [2022-11-21 09:03:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:55,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217513513] [2022-11-21 09:03:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:55,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217513513] [2022-11-21 09:03:55,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217513513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:55,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:55,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525478720] [2022-11-21 09:03:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:55,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:55,119 INFO L87 Difference]: Start difference. First operand 2485 states and 4022 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:55,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:55,448 INFO L93 Difference]: Finished difference Result 5720 states and 9268 transitions. [2022-11-21 09:03:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-21 09:03:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:55,468 INFO L225 Difference]: With dead ends: 5720 [2022-11-21 09:03:55,468 INFO L226 Difference]: Without dead ends: 3950 [2022-11-21 09:03:55,471 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 [2022-11-21 09:03:55,472 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:55,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2022-11-21 09:03:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3948. [2022-11-21 09:03:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 1.6017228274638966) internal successors, (6322), 3947 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6322 transitions. [2022-11-21 09:03:55,812 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6322 transitions. Word has length 72 [2022-11-21 09:03:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:55,813 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 6322 transitions. [2022-11-21 09:03:55,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6322 transitions. [2022-11-21 09:03:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 09:03:55,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:55,815 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] [2022-11-21 09:03:55,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:03:55,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:55,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -33308114, now seen corresponding path program 1 times [2022-11-21 09:03:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:55,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790663776] [2022-11-21 09:03:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:55,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:55,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790663776] [2022-11-21 09:03:55,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790663776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:55,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:55,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:55,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443958641] [2022-11-21 09:03:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:55,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:55,908 INFO L87 Difference]: Start difference. First operand 3948 states and 6322 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:56,401 INFO L93 Difference]: Finished difference Result 8740 states and 14052 transitions. [2022-11-21 09:03:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-21 09:03:56,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:56,426 INFO L225 Difference]: With dead ends: 8740 [2022-11-21 09:03:56,426 INFO L226 Difference]: Without dead ends: 5943 [2022-11-21 09:03:56,431 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 [2022-11-21 09:03:56,432 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 84 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:56,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 407 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2022-11-21 09:03:57,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5941. [2022-11-21 09:03:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5941 states, 5940 states have (on average 1.59006734006734) internal successors, (9445), 5940 states have internal predecessors, (9445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5941 states to 5941 states and 9445 transitions. [2022-11-21 09:03:57,087 INFO L78 Accepts]: Start accepts. Automaton has 5941 states and 9445 transitions. Word has length 72 [2022-11-21 09:03:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:57,088 INFO L495 AbstractCegarLoop]: Abstraction has 5941 states and 9445 transitions. [2022-11-21 09:03:57,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5941 states and 9445 transitions. [2022-11-21 09:03:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 09:03:57,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:57,090 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] [2022-11-21 09:03:57,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:03:57,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash -816632547, now seen corresponding path program 1 times [2022-11-21 09:03:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:57,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683305343] [2022-11-21 09:03:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683305343] [2022-11-21 09:03:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683305343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:57,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:57,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:03:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182558559] [2022-11-21 09:03:57,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:03:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:03:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:03:57,160 INFO L87 Difference]: Start difference. First operand 5941 states and 9445 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:03:57,924 INFO L93 Difference]: Finished difference Result 13469 states and 21666 transitions. [2022-11-21 09:03:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:03:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-21 09:03:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:03:57,972 INFO L225 Difference]: With dead ends: 13469 [2022-11-21 09:03:57,973 INFO L226 Difference]: Without dead ends: 9099 [2022-11-21 09:03:57,979 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 [2022-11-21 09:03:57,980 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 90 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:03:57,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:03:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2022-11-21 09:03:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 9097. [2022-11-21 09:03:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9097 states, 9096 states have (on average 1.584212840809147) internal successors, (14410), 9096 states have internal predecessors, (14410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9097 states to 9097 states and 14410 transitions. [2022-11-21 09:03:58,813 INFO L78 Accepts]: Start accepts. Automaton has 9097 states and 14410 transitions. Word has length 72 [2022-11-21 09:03:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:03:58,813 INFO L495 AbstractCegarLoop]: Abstraction has 9097 states and 14410 transitions. [2022-11-21 09:03:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:03:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9097 states and 14410 transitions. [2022-11-21 09:03:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-21 09:03:58,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:03:58,816 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, 1] [2022-11-21 09:03:58,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:03:58,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:03:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash -628954083, now seen corresponding path program 1 times [2022-11-21 09:03:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:58,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666114243] [2022-11-21 09:03:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:03:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:59,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666114243] [2022-11-21 09:03:59,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666114243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:59,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:59,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:03:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74775142] [2022-11-21 09:03:59,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:59,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:03:59,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:03:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:03:59,202 INFO L87 Difference]: Start difference. First operand 9097 states and 14410 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:00,377 INFO L93 Difference]: Finished difference Result 18125 states and 28728 transitions. [2022-11-21 09:04:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-21 09:04:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:00,401 INFO L225 Difference]: With dead ends: 18125 [2022-11-21 09:04:00,402 INFO L226 Difference]: Without dead ends: 9099 [2022-11-21 09:04:00,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:00,413 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 229 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:00,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 490 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:04:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2022-11-21 09:04:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 9097. [2022-11-21 09:04:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9097 states, 9096 states have (on average 1.5704705364995601) internal successors, (14285), 9096 states have internal predecessors, (14285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9097 states to 9097 states and 14285 transitions. [2022-11-21 09:04:01,157 INFO L78 Accepts]: Start accepts. Automaton has 9097 states and 14285 transitions. Word has length 74 [2022-11-21 09:04:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:01,158 INFO L495 AbstractCegarLoop]: Abstraction has 9097 states and 14285 transitions. [2022-11-21 09:04:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9097 states and 14285 transitions. [2022-11-21 09:04:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 09:04:01,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:01,160 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, 1, 1, 1, 1] [2022-11-21 09:04:01,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:04:01,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -820820622, now seen corresponding path program 1 times [2022-11-21 09:04:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:01,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368146241] [2022-11-21 09:04:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:01,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368146241] [2022-11-21 09:04:01,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368146241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:01,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:01,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489310364] [2022-11-21 09:04:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:01,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:04:01,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:04:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:04:01,401 INFO L87 Difference]: Start difference. First operand 9097 states and 14285 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:03,025 INFO L93 Difference]: Finished difference Result 26071 states and 41096 transitions. [2022-11-21 09:04:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:04:03,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-11-21 09:04:03,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:03,086 INFO L225 Difference]: With dead ends: 26071 [2022-11-21 09:04:03,086 INFO L226 Difference]: Without dead ends: 17045 [2022-11-21 09:04:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:03,102 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 302 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:03,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 492 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:04:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17045 states. [2022-11-21 09:04:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17045 to 17043. [2022-11-21 09:04:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 17042 states have (on average 1.5558033094707193) internal successors, (26514), 17042 states have internal predecessors, (26514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 26514 transitions. [2022-11-21 09:04:04,725 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 26514 transitions. Word has length 77 [2022-11-21 09:04:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:04,725 INFO L495 AbstractCegarLoop]: Abstraction has 17043 states and 26514 transitions. [2022-11-21 09:04:04,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 26514 transitions. [2022-11-21 09:04:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 09:04:04,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:04,727 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, 1, 1, 1, 1, 1] [2022-11-21 09:04:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:04:04,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -104211194, now seen corresponding path program 1 times [2022-11-21 09:04:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187631882] [2022-11-21 09:04:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:05,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187631882] [2022-11-21 09:04:05,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187631882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:05,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:05,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285049698] [2022-11-21 09:04:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:04:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:04:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:04:05,010 INFO L87 Difference]: Start difference. First operand 17043 states and 26514 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:07,673 INFO L93 Difference]: Finished difference Result 33743 states and 51836 transitions. [2022-11-21 09:04:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:04:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-21 09:04:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:07,773 INFO L225 Difference]: With dead ends: 33743 [2022-11-21 09:04:07,773 INFO L226 Difference]: Without dead ends: 33741 [2022-11-21 09:04:07,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:07,781 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 269 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:07,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 776 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:04:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33741 states. [2022-11-21 09:04:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33741 to 18129. [2022-11-21 09:04:09,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18129 states, 18128 states have (on average 1.5220101500441305) internal successors, (27591), 18128 states have internal predecessors, (27591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18129 states to 18129 states and 27591 transitions. [2022-11-21 09:04:09,432 INFO L78 Accepts]: Start accepts. Automaton has 18129 states and 27591 transitions. Word has length 78 [2022-11-21 09:04:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:09,433 INFO L495 AbstractCegarLoop]: Abstraction has 18129 states and 27591 transitions. [2022-11-21 09:04:09,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 18129 states and 27591 transitions. [2022-11-21 09:04:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 09:04:09,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:09,440 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 09:04:09,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 09:04:09,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:09,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash -702667206, now seen corresponding path program 1 times [2022-11-21 09:04:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:09,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22929188] [2022-11-21 09:04:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 09:04:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22929188] [2022-11-21 09:04:09,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22929188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:09,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:09,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606042798] [2022-11-21 09:04:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:09,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:09,561 INFO L87 Difference]: Start difference. First operand 18129 states and 27591 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:12,158 INFO L93 Difference]: Finished difference Result 54135 states and 82316 transitions. [2022-11-21 09:04:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 105 [2022-11-21 09:04:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:12,249 INFO L225 Difference]: With dead ends: 54135 [2022-11-21 09:04:12,249 INFO L226 Difference]: Without dead ends: 36068 [2022-11-21 09:04:12,272 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 [2022-11-21 09:04:12,273 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 117 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:12,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:04:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36068 states. [2022-11-21 09:04:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36068 to 36066. [2022-11-21 09:04:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36066 states, 36065 states have (on average 1.507999445445723) internal successors, (54386), 36065 states have internal predecessors, (54386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36066 states to 36066 states and 54386 transitions. [2022-11-21 09:04:15,953 INFO L78 Accepts]: Start accepts. Automaton has 36066 states and 54386 transitions. Word has length 105 [2022-11-21 09:04:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:15,953 INFO L495 AbstractCegarLoop]: Abstraction has 36066 states and 54386 transitions. [2022-11-21 09:04:15,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36066 states and 54386 transitions. [2022-11-21 09:04:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 09:04:15,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:15,958 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 09:04:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:04:15,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1444579879, now seen corresponding path program 1 times [2022-11-21 09:04:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113062495] [2022-11-21 09:04:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:04:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113062495] [2022-11-21 09:04:16,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113062495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:16,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:16,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813195855] [2022-11-21 09:04:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:16,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:16,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:16,064 INFO L87 Difference]: Start difference. First operand 36066 states and 54386 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:21,873 INFO L93 Difference]: Finished difference Result 107714 states and 162278 transitions. [2022-11-21 09:04:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 105 [2022-11-21 09:04:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:22,050 INFO L225 Difference]: With dead ends: 107714 [2022-11-21 09:04:22,051 INFO L226 Difference]: Without dead ends: 71753 [2022-11-21 09:04:22,091 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 [2022-11-21 09:04:22,092 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:22,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 404 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:04:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71753 states. [2022-11-21 09:04:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71753 to 71751. [2022-11-21 09:04:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71751 states, 71750 states have (on average 1.4938257839721254) internal successors, (107182), 71750 states have internal predecessors, (107182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71751 states to 71751 states and 107182 transitions. [2022-11-21 09:04:29,012 INFO L78 Accepts]: Start accepts. Automaton has 71751 states and 107182 transitions. Word has length 105 [2022-11-21 09:04:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:29,012 INFO L495 AbstractCegarLoop]: Abstraction has 71751 states and 107182 transitions. [2022-11-21 09:04:29,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 71751 states and 107182 transitions. [2022-11-21 09:04:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 09:04:29,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:29,019 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 09:04:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 09:04:29,019 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 661255446, now seen corresponding path program 1 times [2022-11-21 09:04:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671287312] [2022-11-21 09:04:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671287312] [2022-11-21 09:04:29,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671287312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:29,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:29,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 09:04:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889280084] [2022-11-21 09:04:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:29,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:29,129 INFO L87 Difference]: Start difference. First operand 71751 states and 107182 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)