./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc --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 f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b --- 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-5e519f3 [2022-11-02 19:57:42,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:57:42,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:57:42,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:57:42,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:57:42,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:57:42,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:57:42,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:57:42,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:57:42,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:57:42,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:57:42,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:57:42,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:57:42,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:57:42,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:57:42,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:57:42,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:57:42,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:57:42,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:57:42,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:57:42,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:57:42,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:57:42,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:57:42,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:57:42,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:57:42,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:57:42,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:57:42,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:57:42,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:57:42,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:57:42,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:57:42,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:57:42,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:57:42,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:57:42,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:57:42,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:57:42,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:57:42,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:57:42,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:57:42,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:57:42,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:57:42,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:57:42,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:57:42,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:57:42,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:57:42,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:57:42,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:57:42,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:57:42,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:57:42,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:57:42,822 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:57:42,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:57:42,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:57:42,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:57:42,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:57:42,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:57:42,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:57:42,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:57:42,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:57:42,826 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:57:42,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:57:42,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:57:42,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:57:42,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:57:42,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:57:42,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:57:42,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:42,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:57:42,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:57:42,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:57:42,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:57:42,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:57:42,831 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:57:42,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:57:42,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:57:42,832 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_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4319f1617264b859ec72b12374ecf2c184fa129f0736ad4fd8fa304d4c3211b [2022-11-02 19:57:43,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:57:43,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:57:43,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:57:43,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:57:43,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:57:43,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:57:43,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/data/30bb0c9e3/42837e0e118d439da3b217149fe355ee/FLAGc25b762d4 [2022-11-02 19:57:43,900 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:57:43,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:57:43,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/data/30bb0c9e3/42837e0e118d439da3b217149fe355ee/FLAGc25b762d4 [2022-11-02 19:57:44,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/data/30bb0c9e3/42837e0e118d439da3b217149fe355ee [2022-11-02 19:57:44,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:57:44,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:57:44,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:44,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:57:44,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:57:44,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:44" (1/1) ... [2022-11-02 19:57:44,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56eb589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:44, skipping insertion in model container [2022-11-02 19:57:44,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:57:44" (1/1) ... [2022-11-02 19:57:44,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:57:44,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:57:44,729 WARN L230 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_3610f979-6661-48c6-a14a-25b378c09fe6/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2022-11-02 19:57:44,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:44,885 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:57:45,045 WARN L230 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_3610f979-6661-48c6-a14a-25b378c09fe6/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21524,21537] [2022-11-02 19:57:45,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:57:45,187 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:57:45,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45 WrapperNode [2022-11-02 19:57:45,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:57:45,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:45,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:57:45,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:57:45,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,321 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2713 [2022-11-02 19:57:45,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:57:45,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:57:45,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:57:45,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:57:45,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:57:45,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:57:45,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:57:45,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:57:45,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (1/1) ... [2022-11-02 19:57:45,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:57:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:57:45,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:57:45,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3610f979-6661-48c6-a14a-25b378c09fe6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:57:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:57:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:57:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:57:45,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:57:45,844 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:57:45,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:57:47,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:57:47,836 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:57:47,836 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 19:57:47,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:47 BoogieIcfgContainer [2022-11-02 19:57:47,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:57:47,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:57:47,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:57:47,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:57:47,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:57:44" (1/3) ... [2022-11-02 19:57:47,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f3a0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:47, skipping insertion in model container [2022-11-02 19:57:47,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:57:45" (2/3) ... [2022-11-02 19:57:47,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f3a0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:57:47, skipping insertion in model container [2022-11-02 19:57:47,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:57:47" (3/3) ... [2022-11-02 19:57:47,854 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-02 19:57:47,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:57:47,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:57:47,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:57:47,980 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;@7fea6ca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:57:47,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:57:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-02 19:57:48,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:48,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:48,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash 898129935, now seen corresponding path program 1 times [2022-11-02 19:57:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:48,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498308431] [2022-11-02 19:57:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:48,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498308431] [2022-11-02 19:57:48,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498308431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:48,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:48,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128383513] [2022-11-02 19:57:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:49,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:49,027 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8375350140056022) internal successors, (1312), 715 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:49,215 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-11-02 19:57:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2022-11-02 19:57:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:49,242 INFO L225 Difference]: With dead ends: 1089 [2022-11-02 19:57:49,242 INFO L226 Difference]: Without dead ends: 890 [2022-11-02 19:57:49,246 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 [2022-11-02 19:57:49,249 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 319 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:49,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 2808 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-02 19:57:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2022-11-02 19:57:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 1.7587373167981961) internal successors, (1560), 887 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1560 transitions. [2022-11-02 19:57:49,439 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1560 transitions. Word has length 184 [2022-11-02 19:57:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:49,443 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1560 transitions. [2022-11-02 19:57:49,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1560 transitions. [2022-11-02 19:57:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 19:57:49,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:49,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:49,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:57:49,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:49,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1119640315, now seen corresponding path program 1 times [2022-11-02 19:57:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712562494] [2022-11-02 19:57:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:49,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712562494] [2022-11-02 19:57:49,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712562494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:49,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:49,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822130744] [2022-11-02 19:57:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:49,761 INFO L87 Difference]: Start difference. First operand 888 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:49,867 INFO L93 Difference]: Finished difference Result 1237 states and 2155 transitions. [2022-11-02 19:57:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:49,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2022-11-02 19:57:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:49,880 INFO L225 Difference]: With dead ends: 1237 [2022-11-02 19:57:49,880 INFO L226 Difference]: Without dead ends: 1047 [2022-11-02 19:57:49,890 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 [2022-11-02 19:57:49,892 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 300 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:49,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-02 19:57:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2022-11-02 19:57:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 1.7509578544061302) internal successors, (1828), 1044 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1828 transitions. [2022-11-02 19:57:49,971 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1828 transitions. Word has length 188 [2022-11-02 19:57:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:49,979 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1828 transitions. [2022-11-02 19:57:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1828 transitions. [2022-11-02 19:57:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 19:57:49,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:49,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:57:49,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2018051092, now seen corresponding path program 1 times [2022-11-02 19:57:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916111471] [2022-11-02 19:57:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:50,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916111471] [2022-11-02 19:57:50,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916111471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:50,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:50,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098313562] [2022-11-02 19:57:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:50,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:50,302 INFO L87 Difference]: Start difference. First operand 1045 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:50,404 INFO L93 Difference]: Finished difference Result 2052 states and 3531 transitions. [2022-11-02 19:57:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:50,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2022-11-02 19:57:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:50,413 INFO L225 Difference]: With dead ends: 2052 [2022-11-02 19:57:50,413 INFO L226 Difference]: Without dead ends: 1532 [2022-11-02 19:57:50,417 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 [2022-11-02 19:57:50,424 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 292 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:50,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2509 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-11-02 19:57:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1530. [2022-11-02 19:57:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 1.7292347939829955) internal successors, (2644), 1529 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2644 transitions. [2022-11-02 19:57:50,514 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2644 transitions. Word has length 188 [2022-11-02 19:57:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:50,515 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2644 transitions. [2022-11-02 19:57:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2644 transitions. [2022-11-02 19:57:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-02 19:57:50,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:50,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:57:50,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -689859409, now seen corresponding path program 1 times [2022-11-02 19:57:50,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:50,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444651545] [2022-11-02 19:57:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444651545] [2022-11-02 19:57:50,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444651545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:50,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:50,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201669857] [2022-11-02 19:57:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:50,790 INFO L87 Difference]: Start difference. First operand 1530 states and 2644 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:50,969 INFO L93 Difference]: Finished difference Result 3474 states and 5916 transitions. [2022-11-02 19:57:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-11-02 19:57:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:50,980 INFO L225 Difference]: With dead ends: 3474 [2022-11-02 19:57:50,981 INFO L226 Difference]: Without dead ends: 2469 [2022-11-02 19:57:50,983 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 [2022-11-02 19:57:50,985 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 285 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:50,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 2674 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2022-11-02 19:57:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2022-11-02 19:57:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.7072181670721818) internal successors, (4210), 2466 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4210 transitions. [2022-11-02 19:57:51,142 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4210 transitions. Word has length 192 [2022-11-02 19:57:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:51,143 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4210 transitions. [2022-11-02 19:57:51,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4210 transitions. [2022-11-02 19:57:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-02 19:57:51,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:51,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:51,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:57:51,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1139258805, now seen corresponding path program 1 times [2022-11-02 19:57:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709297897] [2022-11-02 19:57:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:51,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:51,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:51,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709297897] [2022-11-02 19:57:51,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709297897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:51,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:51,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189714049] [2022-11-02 19:57:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:51,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:51,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:51,354 INFO L87 Difference]: Start difference. First operand 2467 states and 4210 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:51,577 INFO L93 Difference]: Finished difference Result 4337 states and 7367 transitions. [2022-11-02 19:57:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-11-02 19:57:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:51,591 INFO L225 Difference]: With dead ends: 4337 [2022-11-02 19:57:51,592 INFO L226 Difference]: Without dead ends: 3332 [2022-11-02 19:57:51,595 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 [2022-11-02 19:57:51,596 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 286 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 2653 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-11-02 19:57:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2022-11-02 19:57:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3329 states have (on average 1.699909882847702) internal successors, (5659), 3329 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5659 transitions. [2022-11-02 19:57:51,874 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5659 transitions. Word has length 196 [2022-11-02 19:57:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:51,875 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 5659 transitions. [2022-11-02 19:57:51,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5659 transitions. [2022-11-02 19:57:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-02 19:57:51,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:51,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:51,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:57:51,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash -939390388, now seen corresponding path program 1 times [2022-11-02 19:57:51,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:51,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226911194] [2022-11-02 19:57:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226911194] [2022-11-02 19:57:52,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226911194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:52,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066779961] [2022-11-02 19:57:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:52,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:52,081 INFO L87 Difference]: Start difference. First operand 3330 states and 5659 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:52,553 INFO L93 Difference]: Finished difference Result 8626 states and 14523 transitions. [2022-11-02 19:57:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-11-02 19:57:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:52,576 INFO L225 Difference]: With dead ends: 8626 [2022-11-02 19:57:52,576 INFO L226 Difference]: Without dead ends: 5879 [2022-11-02 19:57:52,584 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 [2022-11-02 19:57:52,586 INFO L413 NwaCegarLoop]: 1403 mSDtfsCounter, 278 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:52,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 2640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-11-02 19:57:53,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5877. [2022-11-02 19:57:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.681926480599047) internal successors, (9883), 5876 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 9883 transitions. [2022-11-02 19:57:53,177 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 9883 transitions. Word has length 196 [2022-11-02 19:57:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:53,178 INFO L495 AbstractCegarLoop]: Abstraction has 5877 states and 9883 transitions. [2022-11-02 19:57:53,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 9883 transitions. [2022-11-02 19:57:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 19:57:53,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:53,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:53,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:57:53,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1438127064, now seen corresponding path program 1 times [2022-11-02 19:57:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213828359] [2022-11-02 19:57:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213828359] [2022-11-02 19:57:53,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213828359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:53,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:53,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:53,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171885002] [2022-11-02 19:57:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:53,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:53,422 INFO L87 Difference]: Start difference. First operand 5877 states and 9883 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:54,037 INFO L93 Difference]: Finished difference Result 10823 states and 18189 transitions. [2022-11-02 19:57:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-11-02 19:57:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:54,071 INFO L225 Difference]: With dead ends: 10823 [2022-11-02 19:57:54,071 INFO L226 Difference]: Without dead ends: 8076 [2022-11-02 19:57:54,076 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 [2022-11-02 19:57:54,077 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:54,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 2618 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2022-11-02 19:57:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8074. [2022-11-02 19:57:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8073 states have (on average 1.6780626780626782) internal successors, (13547), 8073 states have internal predecessors, (13547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 13547 transitions. [2022-11-02 19:57:54,814 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 13547 transitions. Word has length 200 [2022-11-02 19:57:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:54,815 INFO L495 AbstractCegarLoop]: Abstraction has 8074 states and 13547 transitions. [2022-11-02 19:57:54,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 13547 transitions. [2022-11-02 19:57:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 19:57:54,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:54,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:54,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:57:54,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1388814671, now seen corresponding path program 1 times [2022-11-02 19:57:54,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:54,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422428408] [2022-11-02 19:57:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:54,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422428408] [2022-11-02 19:57:55,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422428408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:55,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:55,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539628920] [2022-11-02 19:57:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:55,081 INFO L87 Difference]: Start difference. First operand 8074 states and 13547 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:56,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:56,421 INFO L93 Difference]: Finished difference Result 22370 states and 37291 transitions. [2022-11-02 19:57:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:57:56,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-11-02 19:57:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:56,480 INFO L225 Difference]: With dead ends: 22370 [2022-11-02 19:57:56,481 INFO L226 Difference]: Without dead ends: 14925 [2022-11-02 19:57:56,495 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 [2022-11-02 19:57:56,496 INFO L413 NwaCegarLoop]: 1368 mSDtfsCounter, 271 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:56,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2022-11-02 19:57:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14923. [2022-11-02 19:57:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 1.6617745610507975) internal successors, (24797), 14922 states have internal predecessors, (24797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 24797 transitions. [2022-11-02 19:57:57,750 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 24797 transitions. Word has length 200 [2022-11-02 19:57:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:57,751 INFO L495 AbstractCegarLoop]: Abstraction has 14923 states and 24797 transitions. [2022-11-02 19:57:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 24797 transitions. [2022-11-02 19:57:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-02 19:57:57,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:57,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:57:57,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1584670309, now seen corresponding path program 1 times [2022-11-02 19:57:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:57,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286802949] [2022-11-02 19:57:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:57,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286802949] [2022-11-02 19:57:57,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286802949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:57,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:57,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:57:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278680284] [2022-11-02 19:57:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:57,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:57:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:57:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:57:57,960 INFO L87 Difference]: Start difference. First operand 14923 states and 24797 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:00,035 INFO L93 Difference]: Finished difference Result 28077 states and 46723 transitions. [2022-11-02 19:58:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:58:00,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-11-02 19:58:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:00,096 INFO L225 Difference]: With dead ends: 28077 [2022-11-02 19:58:00,096 INFO L226 Difference]: Without dead ends: 20632 [2022-11-02 19:58:00,111 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 [2022-11-02 19:58:00,113 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 272 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:00,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2583 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:58:00,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2022-11-02 19:58:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 20630. [2022-11-02 19:58:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20630 states, 20629 states have (on average 1.6591691308352319) internal successors, (34227), 20629 states have internal predecessors, (34227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20630 states to 20630 states and 34227 transitions. [2022-11-02 19:58:01,811 INFO L78 Accepts]: Start accepts. Automaton has 20630 states and 34227 transitions. Word has length 204 [2022-11-02 19:58:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:01,812 INFO L495 AbstractCegarLoop]: Abstraction has 20630 states and 34227 transitions. [2022-11-02 19:58:01,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 20630 states and 34227 transitions. [2022-11-02 19:58:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-02 19:58:01,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:01,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 19:58:01,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -247447380, now seen corresponding path program 1 times [2022-11-02 19:58:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:01,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260230281] [2022-11-02 19:58:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:01,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260230281] [2022-11-02 19:58:02,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260230281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:02,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:02,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696162066] [2022-11-02 19:58:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:02,192 INFO L87 Difference]: Start difference. First operand 20630 states and 34227 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:13,003 INFO L93 Difference]: Finished difference Result 152827 states and 254674 transitions. [2022-11-02 19:58:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:58:13,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-11-02 19:58:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:13,676 INFO L225 Difference]: With dead ends: 152827 [2022-11-02 19:58:13,676 INFO L226 Difference]: Without dead ends: 132872 [2022-11-02 19:58:13,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:58:13,752 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 3735 mSDsluCounter, 9320 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3735 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:13,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3735 Valid, 10579 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:58:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132872 states. [2022-11-02 19:58:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132872 to 40288. [2022-11-02 19:58:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40288 states, 40287 states have (on average 1.6533124829349417) internal successors, (66607), 40287 states have internal predecessors, (66607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40288 states to 40288 states and 66607 transitions. [2022-11-02 19:58:19,105 INFO L78 Accepts]: Start accepts. Automaton has 40288 states and 66607 transitions. Word has length 204 [2022-11-02 19:58:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 40288 states and 66607 transitions. [2022-11-02 19:58:19,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 40288 states and 66607 transitions. [2022-11-02 19:58:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-02 19:58:19,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:19,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:19,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 19:58:19,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 847446003, now seen corresponding path program 1 times [2022-11-02 19:58:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930325729] [2022-11-02 19:58:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930325729] [2022-11-02 19:58:19,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930325729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:19,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:19,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:58:19,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173609104] [2022-11-02 19:58:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:58:19,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:58:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:58:19,383 INFO L87 Difference]: Start difference. First operand 40288 states and 66607 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:29,039 INFO L93 Difference]: Finished difference Result 132051 states and 219052 transitions. [2022-11-02 19:58:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:58:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2022-11-02 19:58:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:29,271 INFO L225 Difference]: With dead ends: 132051 [2022-11-02 19:58:29,272 INFO L226 Difference]: Without dead ends: 92486 [2022-11-02 19:58:29,322 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 [2022-11-02 19:58:29,323 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 939 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:29,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 4045 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:58:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92486 states.