./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c7b2e547f39f7d53d20335ecc1b1fbde6acdc52384cb52caa86017352bf317a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:31:16,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:31:16,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:31:16,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:31:16,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:31:16,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:31:16,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:31:16,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:31:16,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:31:16,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:31:16,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:31:16,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:31:16,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:31:16,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:31:16,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:31:16,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:31:16,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:31:16,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:31:16,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:31:16,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:31:16,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:31:16,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:31:16,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:31:16,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:31:16,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:31:16,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:31:16,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:31:16,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:31:16,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:31:16,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:31:16,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:31:16,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:31:16,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:31:16,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:31:16,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:31:16,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:31:16,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:31:16,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:31:16,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:31:16,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:31:16,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:31:16,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:31:16,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:31:16,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:31:16,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:31:16,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:31:16,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:31:16,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:31:16,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:31:16,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:31:16,704 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:31:16,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:31:16,705 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:31:16,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:31:16,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:31:16,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:31:16,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:31:16,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:31:16,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:31:16,708 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:31:16,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:31:16,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:31:16,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:31:16,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:31:16,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:31:16,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:31:16,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:16,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:31:16,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:31:16,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:31:16,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:31:16,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:31:16,712 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:31:16,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:31:16,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:31:16,714 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_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c7b2e547f39f7d53d20335ecc1b1fbde6acdc52384cb52caa86017352bf317a [2022-11-16 12:31:17,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:31:17,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:31:17,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:31:17,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:31:17,206 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:31:17,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:31:17,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/data/a0278164e/38b1189808fe4011be166708b85c9ac2/FLAGa85b16565 [2022-11-16 12:31:18,012 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:31:18,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:31:18,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/data/a0278164e/38b1189808fe4011be166708b85c9ac2/FLAGa85b16565 [2022-11-16 12:31:18,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/data/a0278164e/38b1189808fe4011be166708b85c9ac2 [2022-11-16 12:31:18,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:31:18,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:31:18,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:18,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:31:18,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:31:18,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:18" (1/1) ... [2022-11-16 12:31:18,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@994f069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:18, skipping insertion in model container [2022-11-16 12:31:18,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:31:18" (1/1) ... [2022-11-16 12:31:18,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:31:18,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:31:18,806 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2022-11-16 12:31:18,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:18,909 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:31:18,981 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2022-11-16 12:31:19,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:31:19,049 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:31:19,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19 WrapperNode [2022-11-16 12:31:19,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:31:19,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:19,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:31:19,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:31:19,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,116 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 616 [2022-11-16 12:31:19,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:31:19,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:31:19,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:31:19,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:31:19,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:31:19,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:31:19,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:31:19,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:31:19,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (1/1) ... [2022-11-16 12:31:19,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:31:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:19,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:31:19,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacf86a6-7faf-4025-b5bc-464b8d32f767/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:31:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:31:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:31:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:31:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:31:19,465 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:31:19,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:31:20,355 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:31:20,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:31:20,366 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:31:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:20 BoogieIcfgContainer [2022-11-16 12:31:20,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:31:20,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:31:20,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:31:20,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:31:20,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:31:18" (1/3) ... [2022-11-16 12:31:20,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402ef33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:20, skipping insertion in model container [2022-11-16 12:31:20,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:31:19" (2/3) ... [2022-11-16 12:31:20,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402ef33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:31:20, skipping insertion in model container [2022-11-16 12:31:20,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:31:20" (3/3) ... [2022-11-16 12:31:20,382 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:31:20,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:31:20,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:31:20,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:31:20,504 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;@59fd49f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:31:20,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:31:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:31:20,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:20,524 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] [2022-11-16 12:31:20,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2022-11-16 12:31:20,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:20,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200035048] [2022-11-16 12:31:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200035048] [2022-11-16 12:31:21,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200035048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:21,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:21,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477158185] [2022-11-16 12:31:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:21,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:21,538 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 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 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:22,087 INFO L93 Difference]: Finished difference Result 832 states and 1345 transitions. [2022-11-16 12:31:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:31:22,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-16 12:31:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:22,106 INFO L225 Difference]: With dead ends: 832 [2022-11-16 12:31:22,107 INFO L226 Difference]: Without dead ends: 750 [2022-11-16 12:31:22,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:31:22,114 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1621 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:22,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1874 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:31:22,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-16 12:31:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 226. [2022-11-16 12:31:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4622222222222223) internal successors, (329), 225 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 329 transitions. [2022-11-16 12:31:22,215 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 329 transitions. Word has length 75 [2022-11-16 12:31:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:22,217 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 329 transitions. [2022-11-16 12:31:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 329 transitions. [2022-11-16 12:31:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:22,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:22,225 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] [2022-11-16 12:31:22,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:31:22,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2022-11-16 12:31:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951097352] [2022-11-16 12:31:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951097352] [2022-11-16 12:31:22,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951097352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:22,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:22,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943860082] [2022-11-16 12:31:22,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:22,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:22,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:22,565 INFO L87 Difference]: Start difference. First operand 226 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:22,904 INFO L93 Difference]: Finished difference Result 921 states and 1431 transitions. [2022-11-16 12:31:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:22,909 INFO L225 Difference]: With dead ends: 921 [2022-11-16 12:31:22,910 INFO L226 Difference]: Without dead ends: 801 [2022-11-16 12:31:22,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:31:22,918 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1028 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:22,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1248 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:31:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-16 12:31:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 355. [2022-11-16 12:31:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.5112994350282485) internal successors, (535), 354 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 535 transitions. [2022-11-16 12:31:23,027 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 535 transitions. Word has length 77 [2022-11-16 12:31:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:23,031 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 535 transitions. [2022-11-16 12:31:23,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 535 transitions. [2022-11-16 12:31:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:23,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:23,040 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] [2022-11-16 12:31:23,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:31:23,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:23,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash -120044916, now seen corresponding path program 1 times [2022-11-16 12:31:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244221800] [2022-11-16 12:31:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244221800] [2022-11-16 12:31:23,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244221800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:23,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:23,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845472305] [2022-11-16 12:31:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:23,370 INFO L87 Difference]: Start difference. First operand 355 states and 535 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:23,674 INFO L93 Difference]: Finished difference Result 1045 states and 1629 transitions. [2022-11-16 12:31:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:23,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:23,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:23,680 INFO L225 Difference]: With dead ends: 1045 [2022-11-16 12:31:23,680 INFO L226 Difference]: Without dead ends: 925 [2022-11-16 12:31:23,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:31:23,693 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1295 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:23,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1056 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-16 12:31:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 538. [2022-11-16 12:31:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5400372439478585) internal successors, (827), 537 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 827 transitions. [2022-11-16 12:31:23,796 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 827 transitions. Word has length 77 [2022-11-16 12:31:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:23,798 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 827 transitions. [2022-11-16 12:31:23,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 827 transitions. [2022-11-16 12:31:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:23,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:23,804 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] [2022-11-16 12:31:23,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:31:23,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:23,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1696566079, now seen corresponding path program 1 times [2022-11-16 12:31:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:23,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614275390] [2022-11-16 12:31:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614275390] [2022-11-16 12:31:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614275390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549168614] [2022-11-16 12:31:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:24,345 INFO L87 Difference]: Start difference. First operand 538 states and 827 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:24,643 INFO L93 Difference]: Finished difference Result 955 states and 1491 transitions. [2022-11-16 12:31:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:24,646 INFO L225 Difference]: With dead ends: 955 [2022-11-16 12:31:24,647 INFO L226 Difference]: Without dead ends: 540 [2022-11-16 12:31:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:31:24,649 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 352 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:24,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 808 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-16 12:31:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2022-11-16 12:31:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5325884543761639) internal successors, (823), 537 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 823 transitions. [2022-11-16 12:31:24,721 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 823 transitions. Word has length 77 [2022-11-16 12:31:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:24,721 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 823 transitions. [2022-11-16 12:31:24,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 823 transitions. [2022-11-16 12:31:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:24,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:24,723 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] [2022-11-16 12:31:24,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:31:24,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1904417886, now seen corresponding path program 1 times [2022-11-16 12:31:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233997018] [2022-11-16 12:31:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:24,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233997018] [2022-11-16 12:31:24,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233997018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:24,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:24,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:31:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82019946] [2022-11-16 12:31:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:24,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:31:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:31:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:31:24,796 INFO L87 Difference]: Start difference. First operand 538 states and 823 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-11-16 12:31:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:25,012 INFO L93 Difference]: Finished difference Result 1323 states and 2066 transitions. [2022-11-16 12:31:25,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:31:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-11-16 12:31:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:25,018 INFO L225 Difference]: With dead ends: 1323 [2022-11-16 12:31:25,018 INFO L226 Difference]: Without dead ends: 908 [2022-11-16 12:31:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:31:25,020 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:25,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 467 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:31:25,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-16 12:31:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2022-11-16 12:31:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.5387205387205387) internal successors, (1371), 891 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1371 transitions. [2022-11-16 12:31:25,199 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1371 transitions. Word has length 77 [2022-11-16 12:31:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:25,200 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1371 transitions. [2022-11-16 12:31:25,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-11-16 12:31:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1371 transitions. [2022-11-16 12:31:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:25,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:25,202 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] [2022-11-16 12:31:25,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:31:25,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1745860562, now seen corresponding path program 1 times [2022-11-16 12:31:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:25,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327949856] [2022-11-16 12:31:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:25,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327949856] [2022-11-16 12:31:25,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327949856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:25,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:25,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611793176] [2022-11-16 12:31:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:25,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:25,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:25,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:25,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:25,451 INFO L87 Difference]: Start difference. First operand 892 states and 1371 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:25,911 INFO L93 Difference]: Finished difference Result 2023 states and 3143 transitions. [2022-11-16 12:31:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:25,918 INFO L225 Difference]: With dead ends: 2023 [2022-11-16 12:31:25,919 INFO L226 Difference]: Without dead ends: 1802 [2022-11-16 12:31:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:31:25,921 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1037 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:25,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1397 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-16 12:31:26,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1112. [2022-11-16 12:31:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.5445544554455446) internal successors, (1716), 1111 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1716 transitions. [2022-11-16 12:31:26,097 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1716 transitions. Word has length 77 [2022-11-16 12:31:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:26,098 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1716 transitions. [2022-11-16 12:31:26,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1716 transitions. [2022-11-16 12:31:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:26,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:26,099 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] [2022-11-16 12:31:26,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:31:26,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1856951880, now seen corresponding path program 1 times [2022-11-16 12:31:26,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:26,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332976800] [2022-11-16 12:31:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:26,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332976800] [2022-11-16 12:31:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332976800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:26,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:26,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:26,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789649737] [2022-11-16 12:31:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:26,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:26,310 INFO L87 Difference]: Start difference. First operand 1112 states and 1716 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:26,876 INFO L93 Difference]: Finished difference Result 2253 states and 3504 transitions. [2022-11-16 12:31:26,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:26,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:26,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:26,883 INFO L225 Difference]: With dead ends: 2253 [2022-11-16 12:31:26,884 INFO L226 Difference]: Without dead ends: 2032 [2022-11-16 12:31:26,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:31:26,888 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1080 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1702 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-11-16 12:31:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1347. [2022-11-16 12:31:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.549034175334324) internal successors, (2085), 1346 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2085 transitions. [2022-11-16 12:31:27,179 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2085 transitions. Word has length 77 [2022-11-16 12:31:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:27,179 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2085 transitions. [2022-11-16 12:31:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2085 transitions. [2022-11-16 12:31:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:31:27,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:27,181 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] [2022-11-16 12:31:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:31:27,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1646651862, now seen corresponding path program 1 times [2022-11-16 12:31:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598932498] [2022-11-16 12:31:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:27,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:27,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598932498] [2022-11-16 12:31:27,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598932498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:27,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:27,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:31:27,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857663811] [2022-11-16 12:31:27,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:31:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:31:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:27,415 INFO L87 Difference]: Start difference. First operand 1347 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:28,076 INFO L93 Difference]: Finished difference Result 2488 states and 3873 transitions. [2022-11-16 12:31:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:31:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2022-11-16 12:31:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:28,086 INFO L225 Difference]: With dead ends: 2488 [2022-11-16 12:31:28,086 INFO L226 Difference]: Without dead ends: 2267 [2022-11-16 12:31:28,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:31:28,088 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1087 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:28,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1265 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-16 12:31:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1582. [2022-11-16 12:31:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5521821631878558) internal successors, (2454), 1581 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2454 transitions. [2022-11-16 12:31:28,406 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2454 transitions. Word has length 77 [2022-11-16 12:31:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:28,406 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2454 transitions. [2022-11-16 12:31:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2022-11-16 12:31:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2454 transitions. [2022-11-16 12:31:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 12:31:28,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:28,409 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] [2022-11-16 12:31:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:31:28,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1055850175, now seen corresponding path program 1 times [2022-11-16 12:31:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:28,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198495400] [2022-11-16 12:31:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:28,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:28,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198495400] [2022-11-16 12:31:28,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198495400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:28,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:28,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:28,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088680978] [2022-11-16 12:31:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:28,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:28,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:28,567 INFO L87 Difference]: Start difference. First operand 1582 states and 2454 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2022-11-16 12:31:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:29,119 INFO L93 Difference]: Finished difference Result 3127 states and 4870 transitions. [2022-11-16 12:31:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:29,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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 [2022-11-16 12:31:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:29,128 INFO L225 Difference]: With dead ends: 3127 [2022-11-16 12:31:29,128 INFO L226 Difference]: Without dead ends: 1582 [2022-11-16 12:31:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:29,137 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 555 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:29,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 111 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-16 12:31:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-16 12:31:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5351043643263758) internal successors, (2427), 1581 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2427 transitions. [2022-11-16 12:31:29,584 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2427 transitions. Word has length 78 [2022-11-16 12:31:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:29,585 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2427 transitions. [2022-11-16 12:31:29,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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) [2022-11-16 12:31:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2427 transitions. [2022-11-16 12:31:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 12:31:29,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:29,587 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, 1] [2022-11-16 12:31:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:31:29,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2025338944, now seen corresponding path program 1 times [2022-11-16 12:31:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:29,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455366806] [2022-11-16 12:31:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:29,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455366806] [2022-11-16 12:31:29,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455366806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:29,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:29,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:29,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196186346] [2022-11-16 12:31:29,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:29,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:29,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:29,751 INFO L87 Difference]: Start difference. First operand 1582 states and 2427 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:30,304 INFO L93 Difference]: Finished difference Result 3111 states and 4797 transitions. [2022-11-16 12:31:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-16 12:31:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:30,310 INFO L225 Difference]: With dead ends: 3111 [2022-11-16 12:31:30,310 INFO L226 Difference]: Without dead ends: 1582 [2022-11-16 12:31:30,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:30,313 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 504 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:30,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 143 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-16 12:31:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-16 12:31:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5180265654648957) internal successors, (2400), 1581 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2400 transitions. [2022-11-16 12:31:30,728 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2400 transitions. Word has length 79 [2022-11-16 12:31:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:30,728 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2400 transitions. [2022-11-16 12:31:30,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2400 transitions. [2022-11-16 12:31:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 12:31:30,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:30,730 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, 1, 1] [2022-11-16 12:31:30,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:31:30,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1784244513, now seen corresponding path program 1 times [2022-11-16 12:31:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:30,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903627981] [2022-11-16 12:31:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:30,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903627981] [2022-11-16 12:31:30,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903627981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:30,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134252678] [2022-11-16 12:31:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:30,854 INFO L87 Difference]: Start difference. First operand 1582 states and 2400 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:31,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:31,370 INFO L93 Difference]: Finished difference Result 3115 states and 4748 transitions. [2022-11-16 12:31:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:31,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-16 12:31:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:31,377 INFO L225 Difference]: With dead ends: 3115 [2022-11-16 12:31:31,377 INFO L226 Difference]: Without dead ends: 1582 [2022-11-16 12:31:31,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:31,380 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 509 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:31,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 135 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-16 12:31:31,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-16 12:31:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5009487666034156) internal successors, (2373), 1581 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2373 transitions. [2022-11-16 12:31:31,741 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2373 transitions. Word has length 80 [2022-11-16 12:31:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:31,741 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2373 transitions. [2022-11-16 12:31:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2373 transitions. [2022-11-16 12:31:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:31:31,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:31,743 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, 1, 1, 1] [2022-11-16 12:31:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:31:31,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -511041836, now seen corresponding path program 1 times [2022-11-16 12:31:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652915738] [2022-11-16 12:31:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:31,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652915738] [2022-11-16 12:31:31,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652915738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:31,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:31,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:31,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610352931] [2022-11-16 12:31:31,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:31,873 INFO L87 Difference]: Start difference. First operand 1582 states and 2373 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:32,419 INFO L93 Difference]: Finished difference Result 3123 states and 4704 transitions. [2022-11-16 12:31:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:32,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:31:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:32,425 INFO L225 Difference]: With dead ends: 3123 [2022-11-16 12:31:32,425 INFO L226 Difference]: Without dead ends: 1582 [2022-11-16 12:31:32,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:32,428 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 525 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:32,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 119 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-16 12:31:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-16 12:31:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.4838709677419355) internal successors, (2346), 1581 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2346 transitions. [2022-11-16 12:31:32,837 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2346 transitions. Word has length 81 [2022-11-16 12:31:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:32,837 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2346 transitions. [2022-11-16 12:31:32,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2346 transitions. [2022-11-16 12:31:32,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:31:32,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:32,839 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, 1, 1, 1, 1] [2022-11-16 12:31:32,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:31:32,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1919227007, now seen corresponding path program 1 times [2022-11-16 12:31:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786557357] [2022-11-16 12:31:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:32,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786557357] [2022-11-16 12:31:32,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786557357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:32,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:32,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:31:32,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091427619] [2022-11-16 12:31:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:32,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:32,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:32,964 INFO L87 Difference]: Start difference. First operand 1582 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:33,461 INFO L93 Difference]: Finished difference Result 3119 states and 4646 transitions. [2022-11-16 12:31:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:31:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-16 12:31:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:33,468 INFO L225 Difference]: With dead ends: 3119 [2022-11-16 12:31:33,468 INFO L226 Difference]: Without dead ends: 1582 [2022-11-16 12:31:33,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:31:33,472 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 507 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:33,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 127 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:31:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-16 12:31:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-16 12:31:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.4667931688804554) internal successors, (2319), 1581 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2319 transitions. [2022-11-16 12:31:33,840 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2319 transitions. Word has length 82 [2022-11-16 12:31:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:33,841 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2319 transitions. [2022-11-16 12:31:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2319 transitions. [2022-11-16 12:31:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 12:31:33,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:33,843 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, 1, 1, 1, 1, 1] [2022-11-16 12:31:33,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:31:33,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2022-11-16 12:31:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683576752] [2022-11-16 12:31:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:34,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683576752] [2022-11-16 12:31:34,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683576752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:34,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:34,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:31:34,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559352436] [2022-11-16 12:31:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:34,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:31:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:31:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:31:34,138 INFO L87 Difference]: Start difference. First operand 1582 states and 2319 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:34,818 INFO L93 Difference]: Finished difference Result 2599 states and 3819 transitions. [2022-11-16 12:31:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:31:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-16 12:31:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:34,827 INFO L225 Difference]: With dead ends: 2599 [2022-11-16 12:31:34,828 INFO L226 Difference]: Without dead ends: 2597 [2022-11-16 12:31:34,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:34,829 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 168 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:34,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 773 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:31:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2022-11-16 12:31:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1594. [2022-11-16 12:31:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4588826114249842) internal successors, (2324), 1593 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2324 transitions. [2022-11-16 12:31:35,293 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2324 transitions. Word has length 83 [2022-11-16 12:31:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:35,294 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2324 transitions. [2022-11-16 12:31:35,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2324 transitions. [2022-11-16 12:31:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 12:31:35,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:35,296 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, 1, 1, 1, 1, 1] [2022-11-16 12:31:35,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:31:35,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2022-11-16 12:31:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:35,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344515668] [2022-11-16 12:31:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344515668] [2022-11-16 12:31:35,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344515668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:35,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:35,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:31:35,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252986408] [2022-11-16 12:31:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:35,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:31:35,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:31:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:31:35,918 INFO L87 Difference]: Start difference. First operand 1594 states and 2324 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:37,712 INFO L93 Difference]: Finished difference Result 4542 states and 6660 transitions. [2022-11-16 12:31:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:31:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-16 12:31:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:37,723 INFO L225 Difference]: With dead ends: 4542 [2022-11-16 12:31:37,724 INFO L226 Difference]: Without dead ends: 3038 [2022-11-16 12:31:37,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:31:37,729 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1244 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 433 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:31:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-11-16 12:31:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1594. [2022-11-16 12:31:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.458254865034526) internal successors, (2323), 1593 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2323 transitions. [2022-11-16 12:31:38,375 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2323 transitions. Word has length 83 [2022-11-16 12:31:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:38,376 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2323 transitions. [2022-11-16 12:31:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2323 transitions. [2022-11-16 12:31:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:31:38,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:38,378 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:31:38,379 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -49884989, now seen corresponding path program 1 times [2022-11-16 12:31:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:38,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636760748] [2022-11-16 12:31:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:38,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:38,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636760748] [2022-11-16 12:31:38,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636760748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:38,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:38,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:31:38,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362661344] [2022-11-16 12:31:38,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:38,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:31:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:38,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:31:38,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:31:38,785 INFO L87 Difference]: Start difference. First operand 1594 states and 2323 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:40,768 INFO L93 Difference]: Finished difference Result 4649 states and 6799 transitions. [2022-11-16 12:31:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:31:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-16 12:31:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:40,794 INFO L225 Difference]: With dead ends: 4649 [2022-11-16 12:31:40,802 INFO L226 Difference]: Without dead ends: 3150 [2022-11-16 12:31:40,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:31:40,806 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1198 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 435 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:31:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-11-16 12:31:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 1594. [2022-11-16 12:31:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4569993722536096) internal successors, (2321), 1593 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2321 transitions. [2022-11-16 12:31:41,602 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2321 transitions. Word has length 84 [2022-11-16 12:31:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:41,602 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2321 transitions. [2022-11-16 12:31:41,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2321 transitions. [2022-11-16 12:31:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:31:41,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:41,604 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:41,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:31:41,605 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1500586117, now seen corresponding path program 1 times [2022-11-16 12:31:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:41,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265205723] [2022-11-16 12:31:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265205723] [2022-11-16 12:31:42,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265205723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:42,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:42,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:31:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089694438] [2022-11-16 12:31:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:31:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:31:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:31:42,115 INFO L87 Difference]: Start difference. First operand 1594 states and 2321 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:44,409 INFO L93 Difference]: Finished difference Result 4634 states and 6773 transitions. [2022-11-16 12:31:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:31:44,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-16 12:31:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:44,420 INFO L225 Difference]: With dead ends: 4634 [2022-11-16 12:31:44,420 INFO L226 Difference]: Without dead ends: 3145 [2022-11-16 12:31:44,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:31:44,424 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1277 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:44,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 548 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:31:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2022-11-16 12:31:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1594. [2022-11-16 12:31:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4544883866917766) internal successors, (2317), 1593 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2317 transitions. [2022-11-16 12:31:45,194 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2317 transitions. Word has length 84 [2022-11-16 12:31:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:45,194 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2317 transitions. [2022-11-16 12:31:45,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2317 transitions. [2022-11-16 12:31:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 12:31:45,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:45,197 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:45,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:31:45,197 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash 842057330, now seen corresponding path program 1 times [2022-11-16 12:31:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:45,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385634604] [2022-11-16 12:31:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385634604] [2022-11-16 12:31:45,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385634604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:45,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:45,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:31:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124208687] [2022-11-16 12:31:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:45,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:31:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:31:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:31:45,653 INFO L87 Difference]: Start difference. First operand 1594 states and 2317 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:48,318 INFO L93 Difference]: Finished difference Result 4604 states and 6721 transitions. [2022-11-16 12:31:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:31:48,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-11-16 12:31:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:48,330 INFO L225 Difference]: With dead ends: 4604 [2022-11-16 12:31:48,331 INFO L226 Difference]: Without dead ends: 3135 [2022-11-16 12:31:48,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:31:48,337 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1413 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:48,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 423 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:31:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-11-16 12:31:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 1594. [2022-11-16 12:31:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4513496547394853) internal successors, (2312), 1593 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2312 transitions. [2022-11-16 12:31:49,078 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2312 transitions. Word has length 85 [2022-11-16 12:31:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:49,079 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2312 transitions. [2022-11-16 12:31:49,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2312 transitions. [2022-11-16 12:31:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 12:31:49,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:49,081 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:49,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:31:49,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2022-11-16 12:31:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461033747] [2022-11-16 12:31:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:31:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:50,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461033747] [2022-11-16 12:31:50,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461033747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:50,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:50,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:31:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041944271] [2022-11-16 12:31:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:50,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:31:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:31:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:31:50,060 INFO L87 Difference]: Start difference. First operand 1594 states and 2312 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:08,378 INFO L93 Difference]: Finished difference Result 26935 states and 39005 transitions. [2022-11-16 12:32:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:32:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-11-16 12:32:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:08,453 INFO L225 Difference]: With dead ends: 26935 [2022-11-16 12:32:08,454 INFO L226 Difference]: Without dead ends: 25491 [2022-11-16 12:32:08,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 12:32:08,462 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 5593 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:08,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 1334 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:32:08,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25491 states. [2022-11-16 12:32:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25491 to 1609. [2022-11-16 12:32:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 1.4465174129353233) internal successors, (2326), 1608 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2326 transitions. [2022-11-16 12:32:09,940 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2326 transitions. Word has length 86 [2022-11-16 12:32:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:09,941 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 2326 transitions. [2022-11-16 12:32:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2326 transitions. [2022-11-16 12:32:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:32:09,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:09,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:09,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:32:09,944 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:09,945 INFO L85 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2022-11-16 12:32:09,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:09,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872361258] [2022-11-16 12:32:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:09,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:10,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:10,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872361258] [2022-11-16 12:32:10,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872361258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:10,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:10,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:32:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757499199] [2022-11-16 12:32:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:10,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:32:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:32:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:32:10,900 INFO L87 Difference]: Start difference. First operand 1609 states and 2326 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:16,559 INFO L93 Difference]: Finished difference Result 6536 states and 9549 transitions. [2022-11-16 12:32:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:32:16,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-16 12:32:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:16,572 INFO L225 Difference]: With dead ends: 6536 [2022-11-16 12:32:16,572 INFO L226 Difference]: Without dead ends: 6064 [2022-11-16 12:32:16,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:32:16,575 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1501 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:16,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1677 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:32:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2022-11-16 12:32:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 1595. [2022-11-16 12:32:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.444792973651192) internal successors, (2303), 1594 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2303 transitions. [2022-11-16 12:32:17,754 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2303 transitions. Word has length 87 [2022-11-16 12:32:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:17,755 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2303 transitions. [2022-11-16 12:32:17,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2303 transitions. [2022-11-16 12:32:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:32:17,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:17,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:17,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:32:17,759 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2022-11-16 12:32:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:17,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745206899] [2022-11-16 12:32:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:19,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745206899] [2022-11-16 12:32:19,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745206899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:19,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:19,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:32:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411682986] [2022-11-16 12:32:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:19,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:32:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:32:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:32:19,072 INFO L87 Difference]: Start difference. First operand 1595 states and 2303 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:26,843 INFO L93 Difference]: Finished difference Result 6389 states and 9331 transitions. [2022-11-16 12:32:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:32:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-16 12:32:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:26,858 INFO L225 Difference]: With dead ends: 6389 [2022-11-16 12:32:26,858 INFO L226 Difference]: Without dead ends: 5917 [2022-11-16 12:32:26,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:32:26,864 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 2026 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:26,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 3947 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:32:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5917 states. [2022-11-16 12:32:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5917 to 1595. [2022-11-16 12:32:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.443538268506901) internal successors, (2301), 1594 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2301 transitions. [2022-11-16 12:32:28,318 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2301 transitions. Word has length 87 [2022-11-16 12:32:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:28,318 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2301 transitions. [2022-11-16 12:32:28,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2301 transitions. [2022-11-16 12:32:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:32:28,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:28,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:28,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:32:28,320 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash -359518871, now seen corresponding path program 1 times [2022-11-16 12:32:28,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:28,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998060727] [2022-11-16 12:32:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:31,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998060727] [2022-11-16 12:32:31,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998060727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:31,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:31,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-16 12:32:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147648356] [2022-11-16 12:32:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:32:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:32:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:32:31,119 INFO L87 Difference]: Start difference. First operand 1595 states and 2301 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:48,260 INFO L93 Difference]: Finished difference Result 10530 states and 15415 transitions. [2022-11-16 12:32:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:32:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-16 12:32:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:48,278 INFO L225 Difference]: With dead ends: 10530 [2022-11-16 12:32:48,278 INFO L226 Difference]: Without dead ends: 10306 [2022-11-16 12:32:48,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=641, Invalid=3649, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 12:32:48,282 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2256 mSDsluCounter, 11113 mSDsCounter, 0 mSdLazyCounter, 6605 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 11652 SdHoareTripleChecker+Invalid, 6632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:48,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 11652 Invalid, 6632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 6605 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 12:32:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2022-11-16 12:32:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 1613. [2022-11-16 12:32:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.4416873449131513) internal successors, (2324), 1612 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2324 transitions. [2022-11-16 12:32:49,661 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2324 transitions. Word has length 87 [2022-11-16 12:32:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:49,661 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2324 transitions. [2022-11-16 12:32:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2324 transitions. [2022-11-16 12:32:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:32:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:49,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:32:49,663 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:32:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash 633451142, now seen corresponding path program 1 times [2022-11-16 12:32:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:32:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315288351] [2022-11-16 12:32:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:32:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:32:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:32:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315288351] [2022-11-16 12:32:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315288351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:32:50,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:32:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:32:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667176631] [2022-11-16 12:32:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:32:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:32:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:32:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:32:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:32:50,312 INFO L87 Difference]: Start difference. First operand 1613 states and 2324 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:00,202 INFO L93 Difference]: Finished difference Result 9313 states and 13631 transitions. [2022-11-16 12:33:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:33:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-16 12:33:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:00,214 INFO L225 Difference]: With dead ends: 9313 [2022-11-16 12:33:00,214 INFO L226 Difference]: Without dead ends: 8826 [2022-11-16 12:33:00,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:33:00,217 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1850 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:00,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 1298 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:33:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2022-11-16 12:33:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 1576. [2022-11-16 12:33:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.4444444444444444) internal successors, (2275), 1575 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2275 transitions. [2022-11-16 12:33:01,919 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2275 transitions. Word has length 87 [2022-11-16 12:33:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:01,919 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2275 transitions. [2022-11-16 12:33:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2275 transitions. [2022-11-16 12:33:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:33:01,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:01,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:01,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:33:01,921 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash 377130840, now seen corresponding path program 1 times [2022-11-16 12:33:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:01,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526075460] [2022-11-16 12:33:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:02,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526075460] [2022-11-16 12:33:02,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526075460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:02,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:02,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:33:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939437737] [2022-11-16 12:33:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:02,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:33:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:33:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:33:02,701 INFO L87 Difference]: Start difference. First operand 1576 states and 2275 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:18,389 INFO L93 Difference]: Finished difference Result 12101 states and 17745 transitions. [2022-11-16 12:33:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:33:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-16 12:33:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:18,402 INFO L225 Difference]: With dead ends: 12101 [2022-11-16 12:33:18,402 INFO L226 Difference]: Without dead ends: 11655 [2022-11-16 12:33:18,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:33:18,406 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 2125 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2245 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:33:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2022-11-16 12:33:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 1557. [2022-11-16 12:33:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 1.4440874035989717) internal successors, (2247), 1556 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2247 transitions. [2022-11-16 12:33:20,375 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2247 transitions. Word has length 88 [2022-11-16 12:33:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:20,376 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2247 transitions. [2022-11-16 12:33:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2247 transitions. [2022-11-16 12:33:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:33:20,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:20,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:20,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:33:20,378 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2099303399, now seen corresponding path program 1 times [2022-11-16 12:33:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:20,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761207931] [2022-11-16 12:33:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:21,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761207931] [2022-11-16 12:33:21,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761207931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:21,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:21,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:33:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778389156] [2022-11-16 12:33:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:21,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:33:21,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:21,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:33:21,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:33:21,154 INFO L87 Difference]: Start difference. First operand 1557 states and 2247 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:30,381 INFO L93 Difference]: Finished difference Result 6395 states and 9342 transitions. [2022-11-16 12:33:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:33:30,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-16 12:33:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:30,387 INFO L225 Difference]: With dead ends: 6395 [2022-11-16 12:33:30,387 INFO L226 Difference]: Without dead ends: 5926 [2022-11-16 12:33:30,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:33:30,389 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1028 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:30,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2256 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:33:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2022-11-16 12:33:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 1532. [2022-11-16 12:33:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.4474199869366426) internal successors, (2216), 1531 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2216 transitions. [2022-11-16 12:33:32,235 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2216 transitions. Word has length 88 [2022-11-16 12:33:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:32,236 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 2216 transitions. [2022-11-16 12:33:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2216 transitions. [2022-11-16 12:33:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:33:32,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:32,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:32,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:33:32,237 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1915986027, now seen corresponding path program 1 times [2022-11-16 12:33:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:32,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038426073] [2022-11-16 12:33:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:32,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:32,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038426073] [2022-11-16 12:33:32,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038426073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:32,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:32,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:33:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760632884] [2022-11-16 12:33:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:33:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:33:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:33:32,391 INFO L87 Difference]: Start difference. First operand 1532 states and 2216 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:35,431 INFO L93 Difference]: Finished difference Result 3561 states and 5201 transitions. [2022-11-16 12:33:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:33:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-16 12:33:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:35,435 INFO L225 Difference]: With dead ends: 3561 [2022-11-16 12:33:35,435 INFO L226 Difference]: Without dead ends: 2123 [2022-11-16 12:33:35,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:33:35,437 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 89 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 433 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:33:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-11-16 12:33:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2110. [2022-11-16 12:33:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2109 states have (on average 1.444760550023708) internal successors, (3047), 2109 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3047 transitions. [2022-11-16 12:33:38,114 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3047 transitions. Word has length 88 [2022-11-16 12:33:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:38,115 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3047 transitions. [2022-11-16 12:33:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3047 transitions. [2022-11-16 12:33:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:33:38,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:38,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:33:38,116 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:33:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1312135, now seen corresponding path program 1 times [2022-11-16 12:33:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:33:38,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753299333] [2022-11-16 12:33:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:38,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:33:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:33:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:33:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753299333] [2022-11-16 12:33:40,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753299333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:33:40,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:33:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-16 12:33:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84498716] [2022-11-16 12:33:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:33:40,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:33:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:33:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:33:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:33:40,691 INFO L87 Difference]: Start difference. First operand 2110 states and 3047 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:34:12,723 INFO L93 Difference]: Finished difference Result 15634 states and 22777 transitions. [2022-11-16 12:34:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:34:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-16 12:34:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:34:12,741 INFO L225 Difference]: With dead ends: 15634 [2022-11-16 12:34:12,741 INFO L226 Difference]: Without dead ends: 14979 [2022-11-16 12:34:12,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=568, Invalid=2972, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:34:12,745 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1622 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 11478 SdHoareTripleChecker+Invalid, 7033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:34:12,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 11478 Invalid, 7033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 7012 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 12:34:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14979 states. [2022-11-16 12:34:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14979 to 2127. [2022-11-16 12:34:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4430856067732831) internal successors, (3068), 2126 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3068 transitions. [2022-11-16 12:34:16,377 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3068 transitions. Word has length 88 [2022-11-16 12:34:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:34:16,377 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3068 transitions. [2022-11-16 12:34:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3068 transitions. [2022-11-16 12:34:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 12:34:16,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:16,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:34:16,379 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 316975013, now seen corresponding path program 1 times [2022-11-16 12:34:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83368038] [2022-11-16 12:34:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:17,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:17,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83368038] [2022-11-16 12:34:17,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83368038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:17,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:17,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:34:17,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757107063] [2022-11-16 12:34:17,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:17,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:34:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:34:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:34:17,133 INFO L87 Difference]: Start difference. First operand 2127 states and 3068 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:34:36,569 INFO L93 Difference]: Finished difference Result 12881 states and 18775 transitions. [2022-11-16 12:34:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:34:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-16 12:34:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:34:36,583 INFO L225 Difference]: With dead ends: 12881 [2022-11-16 12:34:36,583 INFO L226 Difference]: Without dead ends: 12217 [2022-11-16 12:34:36,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:34:36,589 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1114 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:34:36,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 3291 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:34:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12217 states. [2022-11-16 12:34:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12217 to 2104. [2022-11-16 12:34:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 1.4450784593437946) internal successors, (3039), 2103 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3039 transitions. [2022-11-16 12:34:39,865 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3039 transitions. Word has length 89 [2022-11-16 12:34:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:34:39,865 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3039 transitions. [2022-11-16 12:34:39,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3039 transitions. [2022-11-16 12:34:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:34:39,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:39,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:34:39,868 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1743887154, now seen corresponding path program 1 times [2022-11-16 12:34:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410282928] [2022-11-16 12:34:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:40,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410282928] [2022-11-16 12:34:40,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410282928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:40,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:40,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:34:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34433276] [2022-11-16 12:34:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:34:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:34:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:34:40,019 INFO L87 Difference]: Start difference. First operand 2104 states and 3039 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:44,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:34:44,728 INFO L93 Difference]: Finished difference Result 4356 states and 6332 transitions. [2022-11-16 12:34:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:34:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-16 12:34:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:34:44,732 INFO L225 Difference]: With dead ends: 4356 [2022-11-16 12:34:44,732 INFO L226 Difference]: Without dead ends: 2917 [2022-11-16 12:34:44,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:34:44,734 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 82 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:34:44,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 393 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:34:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-11-16 12:34:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2807. [2022-11-16 12:34:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.444761225944405) internal successors, (4054), 2806 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4054 transitions. [2022-11-16 12:34:48,948 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4054 transitions. Word has length 116 [2022-11-16 12:34:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:34:48,949 INFO L495 AbstractCegarLoop]: Abstraction has 2807 states and 4054 transitions. [2022-11-16 12:34:48,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:34:48,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4054 transitions. [2022-11-16 12:34:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:34:48,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:34:48,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:34:48,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:34:48,950 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:34:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:34:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1636203635, now seen corresponding path program 1 times [2022-11-16 12:34:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:34:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060935229] [2022-11-16 12:34:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:34:48,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:34:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:34:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:34:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:34:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060935229] [2022-11-16 12:34:49,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060935229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:34:49,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:34:49,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:34:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659031631] [2022-11-16 12:34:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:34:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:34:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:34:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:34:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:34:49,141 INFO L87 Difference]: Start difference. First operand 2807 states and 4054 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:07,934 INFO L93 Difference]: Finished difference Result 14951 states and 21662 transitions. [2022-11-16 12:35:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:35:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-16 12:35:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:07,949 INFO L225 Difference]: With dead ends: 14951 [2022-11-16 12:35:07,949 INFO L226 Difference]: Without dead ends: 12240 [2022-11-16 12:35:07,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:35:07,953 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1524 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:07,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 362 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:35:07,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12240 states. [2022-11-16 12:35:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12240 to 6016. [2022-11-16 12:35:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 6015 states have (on average 1.4472152950955943) internal successors, (8705), 6015 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8705 transitions. [2022-11-16 12:35:16,376 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8705 transitions. Word has length 116 [2022-11-16 12:35:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:16,377 INFO L495 AbstractCegarLoop]: Abstraction has 6016 states and 8705 transitions. [2022-11-16 12:35:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8705 transitions. [2022-11-16 12:35:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:35:16,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:16,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:35:16,380 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:35:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2144971769, now seen corresponding path program 1 times [2022-11-16 12:35:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174774958] [2022-11-16 12:35:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:16,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:16,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174774958] [2022-11-16 12:35:16,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174774958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:16,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:16,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:35:16,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037843282] [2022-11-16 12:35:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:16,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:35:16,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:35:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:35:16,542 INFO L87 Difference]: Start difference. First operand 6016 states and 8705 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:50,885 INFO L93 Difference]: Finished difference Result 30296 states and 43717 transitions. [2022-11-16 12:35:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:35:50,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-16 12:35:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:50,915 INFO L225 Difference]: With dead ends: 30296 [2022-11-16 12:35:50,915 INFO L226 Difference]: Without dead ends: 24376 [2022-11-16 12:35:50,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:35:50,922 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1357 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:50,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 366 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:35:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24376 states. [2022-11-16 12:36:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24376 to 12934. [2022-11-16 12:36:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12934 states, 12933 states have (on average 1.4464548055362252) internal successors, (18707), 12933 states have internal predecessors, (18707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12934 states to 12934 states and 18707 transitions. [2022-11-16 12:36:07,495 INFO L78 Accepts]: Start accepts. Automaton has 12934 states and 18707 transitions. Word has length 116 [2022-11-16 12:36:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:07,495 INFO L495 AbstractCegarLoop]: Abstraction has 12934 states and 18707 transitions. [2022-11-16 12:36:07,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12934 states and 18707 transitions. [2022-11-16 12:36:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:36:07,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:07,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:36:07,498 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 531272813, now seen corresponding path program 1 times [2022-11-16 12:36:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390531181] [2022-11-16 12:36:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390531181] [2022-11-16 12:36:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390531181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:07,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:07,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:36:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625062687] [2022-11-16 12:36:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:36:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:36:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:36:07,645 INFO L87 Difference]: Start difference. First operand 12934 states and 18707 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:14,023 INFO L93 Difference]: Finished difference Result 60050 states and 86923 transitions. [2022-11-16 12:37:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:37:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-16 12:37:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:14,102 INFO L225 Difference]: With dead ends: 60050 [2022-11-16 12:37:14,102 INFO L226 Difference]: Without dead ends: 47212 [2022-11-16 12:37:14,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:37:14,117 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1699 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:14,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 356 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:37:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47212 states. [2022-11-16 12:37:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47212 to 27770. [2022-11-16 12:37:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27770 states, 27769 states have (on average 1.4444524469732436) internal successors, (40111), 27769 states have internal predecessors, (40111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27770 states to 27770 states and 40111 transitions. [2022-11-16 12:37:50,766 INFO L78 Accepts]: Start accepts. Automaton has 27770 states and 40111 transitions. Word has length 116 [2022-11-16 12:37:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:50,767 INFO L495 AbstractCegarLoop]: Abstraction has 27770 states and 40111 transitions. [2022-11-16 12:37:50,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 27770 states and 40111 transitions. [2022-11-16 12:37:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:37:50,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:50,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:37:50,768 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash 590869479, now seen corresponding path program 1 times [2022-11-16 12:37:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:50,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134375244] [2022-11-16 12:37:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134375244] [2022-11-16 12:37:50,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134375244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:50,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:50,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:37:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109907569] [2022-11-16 12:37:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:50,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:37:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:37:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:37:50,933 INFO L87 Difference]: Start difference. First operand 27770 states and 40111 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:00,405 INFO L93 Difference]: Finished difference Result 75981 states and 109385 transitions. [2022-11-16 12:39:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-16 12:39:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:00,481 INFO L225 Difference]: With dead ends: 75981 [2022-11-16 12:39:00,481 INFO L226 Difference]: Without dead ends: 48307 [2022-11-16 12:39:00,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:39:00,505 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1173 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:00,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 450 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:39:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48307 states. [2022-11-16 12:39:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48307 to 29651. [2022-11-16 12:39:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29651 states, 29650 states have (on average 1.4374030354131535) internal successors, (42619), 29650 states have internal predecessors, (42619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29651 states to 29651 states and 42619 transitions. [2022-11-16 12:39:39,982 INFO L78 Accepts]: Start accepts. Automaton has 29651 states and 42619 transitions. Word has length 116 [2022-11-16 12:39:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:39,983 INFO L495 AbstractCegarLoop]: Abstraction has 29651 states and 42619 transitions. [2022-11-16 12:39:39,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:39:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29651 states and 42619 transitions. [2022-11-16 12:39:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-16 12:39:39,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:39,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:39,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:39:39,994 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1143695338, now seen corresponding path program 1 times [2022-11-16 12:39:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:39,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919547930] [2022-11-16 12:39:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:39:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:40,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919547930] [2022-11-16 12:39:40,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919547930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:40,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:40,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:39:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518127252] [2022-11-16 12:39:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:39:40,144 INFO L87 Difference]: Start difference. First operand 29651 states and 42619 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:22,320 INFO L93 Difference]: Finished difference Result 57087 states and 81909 transitions. [2022-11-16 12:40:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-11-16 12:40:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:22,362 INFO L225 Difference]: With dead ends: 57087 [2022-11-16 12:40:22,362 INFO L226 Difference]: Without dead ends: 27538 [2022-11-16 12:40:22,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:22,384 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 78 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:22,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27538 states. [2022-11-16 12:41:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27538 to 26906. [2022-11-16 12:41:01,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26906 states, 26905 states have (on average 1.425720126370563) internal successors, (38359), 26905 states have internal predecessors, (38359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26906 states to 26906 states and 38359 transitions. [2022-11-16 12:41:02,020 INFO L78 Accepts]: Start accepts. Automaton has 26906 states and 38359 transitions. Word has length 143 [2022-11-16 12:41:02,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:02,020 INFO L495 AbstractCegarLoop]: Abstraction has 26906 states and 38359 transitions. [2022-11-16 12:41:02,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 26906 states and 38359 transitions. [2022-11-16 12:41:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 12:41:02,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:02,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:41:02,029 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1248985563, now seen corresponding path program 1 times [2022-11-16 12:41:02,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:02,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38295843] [2022-11-16 12:41:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:02,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:41:02,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:02,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38295843] [2022-11-16 12:41:02,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38295843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:02,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:02,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292336803] [2022-11-16 12:41:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:02,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:02,324 INFO L87 Difference]: Start difference. First operand 26906 states and 38359 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:41,211 INFO L93 Difference]: Finished difference Result 51618 states and 73417 transitions. [2022-11-16 12:41:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-11-16 12:41:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:41,246 INFO L225 Difference]: With dead ends: 51618 [2022-11-16 12:41:41,246 INFO L226 Difference]: Without dead ends: 24808 [2022-11-16 12:41:41,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:41,265 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:41,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:41:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24808 states. [2022-11-16 12:42:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24808 to 24206. [2022-11-16 12:42:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24206 states, 24205 states have (on average 1.4112373476554432) internal successors, (34159), 24205 states have internal predecessors, (34159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24206 states to 24206 states and 34159 transitions. [2022-11-16 12:42:21,426 INFO L78 Accepts]: Start accepts. Automaton has 24206 states and 34159 transitions. Word has length 144 [2022-11-16 12:42:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:21,426 INFO L495 AbstractCegarLoop]: Abstraction has 24206 states and 34159 transitions. [2022-11-16 12:42:21,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 24206 states and 34159 transitions. [2022-11-16 12:42:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 12:42:21,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:21,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:42:21,433 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -753227601, now seen corresponding path program 1 times [2022-11-16 12:42:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019076821] [2022-11-16 12:42:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:42:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019076821] [2022-11-16 12:42:21,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019076821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:21,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:21,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111183086] [2022-11-16 12:42:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:21,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:21,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:21,598 INFO L87 Difference]: Start difference. First operand 24206 states and 34159 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:43:01,015 INFO L93 Difference]: Finished difference Result 46218 states and 65017 transitions. [2022-11-16 12:43:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:43:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-11-16 12:43:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:43:01,044 INFO L225 Difference]: With dead ends: 46218 [2022-11-16 12:43:01,044 INFO L226 Difference]: Without dead ends: 22108 [2022-11-16 12:43:01,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:43:01,055 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 64 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:43:01,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:43:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22108 states. [2022-11-16 12:43:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22108 to 21506. [2022-11-16 12:43:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21506 states, 21505 states have (on average 1.3931178795628925) internal successors, (29959), 21505 states have internal predecessors, (29959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21506 states to 21506 states and 29959 transitions. [2022-11-16 12:43:34,852 INFO L78 Accepts]: Start accepts. Automaton has 21506 states and 29959 transitions. Word has length 145 [2022-11-16 12:43:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:43:34,853 INFO L495 AbstractCegarLoop]: Abstraction has 21506 states and 29959 transitions. [2022-11-16 12:43:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21506 states and 29959 transitions. [2022-11-16 12:43:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 12:43:34,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:43:34,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:43:34,856 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:43:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1187620974, now seen corresponding path program 1 times [2022-11-16 12:43:34,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018591708] [2022-11-16 12:43:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:43:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:35,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018591708] [2022-11-16 12:43:35,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018591708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:35,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:43:35,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:43:35,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954599030] [2022-11-16 12:43:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:43:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:43:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:43:35,022 INFO L87 Difference]: Start difference. First operand 21506 states and 29959 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:44,176 INFO L93 Difference]: Finished difference Result 62126 states and 86073 transitions. [2022-11-16 12:44:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:44:44,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-11-16 12:44:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:44,239 INFO L225 Difference]: With dead ends: 62126 [2022-11-16 12:44:44,239 INFO L226 Difference]: Without dead ends: 40716 [2022-11-16 12:44:44,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:44:44,255 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 56 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:44,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:44:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states.