./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/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_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/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_4fe896c6-914a-49a0-86ce-bd317b8345b9/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 f02e9f77b882be24d50c19f50ce800eb05eecbc064c8c6c7833bfe76a90e6ee8 --- 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 20:05:44,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:05:44,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:05:44,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:05:44,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:05:45,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:05:45,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:05:45,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:05:45,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:05:45,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:05:45,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:05:45,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:05:45,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:05:45,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:05:45,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:05:45,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:05:45,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:05:45,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:05:45,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:05:45,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:05:45,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:05:45,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:05:45,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:05:45,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:05:45,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:05:45,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:05:45,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:05:45,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:05:45,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:05:45,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:05:45,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:05:45,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:05:45,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:05:45,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:05:45,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:05:45,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:05:45,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:05:45,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:05:45,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:05:45,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:05:45,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:05:45,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:05:45,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:05:45,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:05:45,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:05:45,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:05:45,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:05:45,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:05:45,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:05:45,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:05:45,131 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:05:45,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:05:45,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:05:45,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:05:45,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:05:45,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:05:45,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:05:45,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:05:45,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:05:45,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:05:45,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:05:45,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:05:45,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:05:45,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:05:45,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:05:45,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:05:45,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:05:45,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:05:45,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:05:45,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:05:45,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:05:45,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:05:45,140 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:05:45,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:05:45,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:05:45,141 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_4fe896c6-914a-49a0-86ce-bd317b8345b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02e9f77b882be24d50c19f50ce800eb05eecbc064c8c6c7833bfe76a90e6ee8 [2022-11-02 20:05:45,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:05:45,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:05:45,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:05:45,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:05:45,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:05:45,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:05:45,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/data/b40e5c330/449f7ffde39f40bc80feb93359d0481b/FLAG2a4f6cea7 [2022-11-02 20:05:46,315 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:05:46,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:05:46,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/data/b40e5c330/449f7ffde39f40bc80feb93359d0481b/FLAG2a4f6cea7 [2022-11-02 20:05:46,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/data/b40e5c330/449f7ffde39f40bc80feb93359d0481b [2022-11-02 20:05:46,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:05:46,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:05:46,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:05:46,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:05:46,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:05:46,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:05:46" (1/1) ... [2022-11-02 20:05:46,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227489a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:46, skipping insertion in model container [2022-11-02 20:05:46,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:05:46" (1/1) ... [2022-11-02 20:05:46,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:05:46,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:05:47,149 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_4fe896c6-914a-49a0-86ce-bd317b8345b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14419,14432] [2022-11-02 20:05:47,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:05:47,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:05:47,517 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_4fe896c6-914a-49a0-86ce-bd317b8345b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14419,14432] [2022-11-02 20:05:47,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:05:47,625 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:05:47,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47 WrapperNode [2022-11-02 20:05:47,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:05:47,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:05:47,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:05:47,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:05:47,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,759 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1181 [2022-11-02 20:05:47,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:05:47,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:05:47,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:05:47,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:05:47,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:05:47,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:05:47,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:05:47,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:05:47,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (1/1) ... [2022-11-02 20:05:47,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:05:47,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:05:47,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:05:47,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe896c6-914a-49a0-86ce-bd317b8345b9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:05:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:05:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:05:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:05:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:05:48,241 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:05:48,257 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:05:49,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:05:49,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:05:49,575 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:05:49,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:05:49 BoogieIcfgContainer [2022-11-02 20:05:49,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:05:49,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:05:49,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:05:49,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:05:49,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:05:46" (1/3) ... [2022-11-02 20:05:49,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df41598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:05:49, skipping insertion in model container [2022-11-02 20:05:49,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:05:47" (2/3) ... [2022-11-02 20:05:49,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df41598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:05:49, skipping insertion in model container [2022-11-02 20:05:49,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:05:49" (3/3) ... [2022-11-02 20:05:49,590 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-02 20:05:49,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:05:49,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:05:49,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:05:49,718 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;@20ee96e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:05:49,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:05:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 20:05:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 20:05:49,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:49,744 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] [2022-11-02 20:05:49,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash 811765820, now seen corresponding path program 1 times [2022-11-02 20:05:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:49,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538415744] [2022-11-02 20:05:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:50,639 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 20:05:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:50,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538415744] [2022-11-02 20:05:50,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538415744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:50,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:50,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856082921] [2022-11-02 20:05:50,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:50,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:50,701 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 0 states have call successors, (0), 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 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:50,945 INFO L93 Difference]: Finished difference Result 634 states and 1113 transitions. [2022-11-02 20:05:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:50,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-11-02 20:05:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:50,984 INFO L225 Difference]: With dead ends: 634 [2022-11-02 20:05:50,984 INFO L226 Difference]: Without dead ends: 510 [2022-11-02 20:05:50,990 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 20:05:50,994 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 372 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:50,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 919 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-02 20:05:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2022-11-02 20:05:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4930966469428009) internal successors, (757), 507 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 20:05:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 757 transitions. [2022-11-02 20:05:51,120 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 757 transitions. Word has length 146 [2022-11-02 20:05:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:51,121 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 757 transitions. [2022-11-02 20:05:51,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 757 transitions. [2022-11-02 20:05:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 20:05:51,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:51,138 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] [2022-11-02 20:05:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:05:51,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1665088068, now seen corresponding path program 1 times [2022-11-02 20:05:51,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:51,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227729412] [2022-11-02 20:05:51,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:51,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:51,531 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 20:05:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:51,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227729412] [2022-11-02 20:05:51,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227729412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:51,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:51,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269603339] [2022-11-02 20:05:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:51,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:51,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:51,542 INFO L87 Difference]: Start difference. First operand 508 states and 757 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:51,697 INFO L93 Difference]: Finished difference Result 1104 states and 1692 transitions. [2022-11-02 20:05:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-11-02 20:05:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:51,709 INFO L225 Difference]: With dead ends: 1104 [2022-11-02 20:05:51,709 INFO L226 Difference]: Without dead ends: 894 [2022-11-02 20:05:51,719 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 20:05:51,722 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 283 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 746 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-11-02 20:05:51,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 892. [2022-11-02 20:05:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.505050505050505) internal successors, (1341), 891 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states 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 20:05:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1341 transitions. [2022-11-02 20:05:51,786 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1341 transitions. Word has length 146 [2022-11-02 20:05:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:51,787 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1341 transitions. [2022-11-02 20:05:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1341 transitions. [2022-11-02 20:05:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 20:05:51,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:51,803 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] [2022-11-02 20:05:51,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:05:51,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2001145712, now seen corresponding path program 1 times [2022-11-02 20:05:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585495485] [2022-11-02 20:05:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:52,480 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 20:05:52,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:52,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585495485] [2022-11-02 20:05:52,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585495485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:52,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:52,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:05:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069643334] [2022-11-02 20:05:52,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:52,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:05:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:05:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:05:52,487 INFO L87 Difference]: Start difference. First operand 892 states and 1341 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:52,765 INFO L93 Difference]: Finished difference Result 2611 states and 3916 transitions. [2022-11-02 20:05:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:05:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-11-02 20:05:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:52,774 INFO L225 Difference]: With dead ends: 2611 [2022-11-02 20:05:52,775 INFO L226 Difference]: Without dead ends: 1728 [2022-11-02 20:05:52,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:05:52,787 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 905 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:52,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-11-02 20:05:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2022-11-02 20:05:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.488695652173913) internal successors, (2568), 1725 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states 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 20:05:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2568 transitions. [2022-11-02 20:05:53,009 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2568 transitions. Word has length 146 [2022-11-02 20:05:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:53,010 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2568 transitions. [2022-11-02 20:05:53,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 20:05:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2568 transitions. [2022-11-02 20:05:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:05:53,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:53,017 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] [2022-11-02 20:05:53,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:05:53,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -153017852, now seen corresponding path program 1 times [2022-11-02 20:05:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:53,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139953292] [2022-11-02 20:05:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:53,142 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 20:05:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139953292] [2022-11-02 20:05:53,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139953292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:53,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:53,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375949791] [2022-11-02 20:05:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:53,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:53,147 INFO L87 Difference]: Start difference. First operand 1726 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 20:05:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:53,544 INFO L93 Difference]: Finished difference Result 5140 states and 7642 transitions. [2022-11-02 20:05:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:53,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-11-02 20:05:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:53,560 INFO L225 Difference]: With dead ends: 5140 [2022-11-02 20:05:53,560 INFO L226 Difference]: Without dead ends: 3442 [2022-11-02 20:05:53,565 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 20:05:53,574 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 442 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:53,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 963 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-11-02 20:05:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1728. [2022-11-02 20:05:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.4881297046902142) internal successors, (2570), 1727 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states 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 20:05:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2570 transitions. [2022-11-02 20:05:53,863 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2570 transitions. Word has length 147 [2022-11-02 20:05:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:53,864 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2570 transitions. [2022-11-02 20:05:53,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 20:05:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2570 transitions. [2022-11-02 20:05:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 20:05:53,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:53,868 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] [2022-11-02 20:05:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:05:53,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:53,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1214315247, now seen corresponding path program 1 times [2022-11-02 20:05:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:53,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240213463] [2022-11-02 20:05:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:54,339 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 20:05:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:54,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240213463] [2022-11-02 20:05:54,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240213463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:54,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:54,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:05:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420497554] [2022-11-02 20:05:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:54,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:05:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:05:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:05:54,343 INFO L87 Difference]: Start difference. First operand 1728 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 20:05:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:54,968 INFO L93 Difference]: Finished difference Result 5036 states and 7470 transitions. [2022-11-02 20:05:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:05:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-11-02 20:05:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:54,984 INFO L225 Difference]: With dead ends: 5036 [2022-11-02 20:05:54,984 INFO L226 Difference]: Without dead ends: 3338 [2022-11-02 20:05:54,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:05:54,988 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 889 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:54,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1166 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2022-11-02 20:05:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2022-11-02 20:05:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3335 states have (on average 1.471664167916042) internal successors, (4908), 3335 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states 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 20:05:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4908 transitions. [2022-11-02 20:05:55,550 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4908 transitions. Word has length 148 [2022-11-02 20:05:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:55,552 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 4908 transitions. [2022-11-02 20:05:55,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 20:05:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4908 transitions. [2022-11-02 20:05:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-02 20:05:55,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:55,563 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] [2022-11-02 20:05:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:05:55,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash 568493541, now seen corresponding path program 1 times [2022-11-02 20:05:55,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167381552] [2022-11-02 20:05:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:55,685 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 20:05:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:55,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167381552] [2022-11-02 20:05:55,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167381552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:55,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:55,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:05:55,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614252000] [2022-11-02 20:05:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:55,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:05:55,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:55,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:05:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:05:55,689 INFO L87 Difference]: Start difference. First operand 3336 states and 4908 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:05:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:56,844 INFO L93 Difference]: Finished difference Result 9932 states and 14604 transitions. [2022-11-02 20:05:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:05:56,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-11-02 20:05:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:56,873 INFO L225 Difference]: With dead ends: 9932 [2022-11-02 20:05:56,874 INFO L226 Difference]: Without dead ends: 6640 [2022-11-02 20:05:56,880 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 20:05:56,882 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 428 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:56,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:05:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2022-11-02 20:05:57,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3340. [2022-11-02 20:05:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3339 states have (on average 1.47109913147649) internal successors, (4912), 3339 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states 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 20:05:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4912 transitions. [2022-11-02 20:05:57,573 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4912 transitions. Word has length 149 [2022-11-02 20:05:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:05:57,574 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 4912 transitions. [2022-11-02 20:05:57,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 20:05:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4912 transitions. [2022-11-02 20:05:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:05:57,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:05:57,580 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] [2022-11-02 20:05:57,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:05:57,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:05:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:05:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1727483410, now seen corresponding path program 1 times [2022-11-02 20:05:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:05:57,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726904102] [2022-11-02 20:05:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:05:57,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:05:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:05:58,002 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 20:05:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:05:58,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726904102] [2022-11-02 20:05:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726904102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:05:58,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:05:58,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:05:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217671793] [2022-11-02 20:05:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:05:58,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:05:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:05:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:05:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:05:58,006 INFO L87 Difference]: Start difference. First operand 3340 states and 4912 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 20:05:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:05:59,395 INFO L93 Difference]: Finished difference Result 9071 states and 13289 transitions. [2022-11-02 20:05:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:05:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-11-02 20:05:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:05:59,419 INFO L225 Difference]: With dead ends: 9071 [2022-11-02 20:05:59,419 INFO L226 Difference]: Without dead ends: 5779 [2022-11-02 20:05:59,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:05:59,427 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 884 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:05:59,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1154 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:05:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2022-11-02 20:06:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5777. [2022-11-02 20:06:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5777 states, 5776 states have (on average 1.4485803324099722) internal successors, (8367), 5776 states have internal predecessors, (8367), 0 states have call successors, (0), 0 states 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 20:06:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 8367 transitions. [2022-11-02 20:06:00,513 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 8367 transitions. Word has length 150 [2022-11-02 20:06:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:00,514 INFO L495 AbstractCegarLoop]: Abstraction has 5777 states and 8367 transitions. [2022-11-02 20:06:00,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 20:06:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 8367 transitions. [2022-11-02 20:06:00,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-02 20:06:00,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:00,523 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] [2022-11-02 20:06:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:06:00,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 982054470, now seen corresponding path program 1 times [2022-11-02 20:06:00,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:00,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688825636] [2022-11-02 20:06:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:00,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:00,613 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 20:06:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:00,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688825636] [2022-11-02 20:06:00,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688825636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:00,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:00,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:06:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735957143] [2022-11-02 20:06:00,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:06:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:06:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:06:00,616 INFO L87 Difference]: Start difference. First operand 5777 states and 8367 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 20:06:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:02,559 INFO L93 Difference]: Finished difference Result 16923 states and 24559 transitions. [2022-11-02 20:06:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:06:02,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-11-02 20:06:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:02,623 INFO L225 Difference]: With dead ends: 16923 [2022-11-02 20:06:02,624 INFO L226 Difference]: Without dead ends: 11462 [2022-11-02 20:06:02,633 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 20:06:02,634 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 414 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:02,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1308 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:06:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2022-11-02 20:06:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5785. [2022-11-02 20:06:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5784 states have (on average 1.4479598893499308) internal successors, (8375), 5784 states have internal predecessors, (8375), 0 states have call successors, (0), 0 states 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 20:06:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8375 transitions. [2022-11-02 20:06:03,702 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8375 transitions. Word has length 151 [2022-11-02 20:06:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:03,703 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 8375 transitions. [2022-11-02 20:06:03,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 20:06:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8375 transitions. [2022-11-02 20:06:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:06:03,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:03,712 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] [2022-11-02 20:06:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:06:03,713 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1043523012, now seen corresponding path program 1 times [2022-11-02 20:06:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:03,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893940018] [2022-11-02 20:06:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:04,143 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 20:06:04,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:04,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893940018] [2022-11-02 20:06:04,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893940018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:04,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:04,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:06:04,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522335294] [2022-11-02 20:06:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:06:04,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:06:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:04,147 INFO L87 Difference]: Start difference. First operand 5785 states and 8375 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:06,012 INFO L93 Difference]: Finished difference Result 15762 states and 22719 transitions. [2022-11-02 20:06:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:06,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-11-02 20:06:06,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:06,040 INFO L225 Difference]: With dead ends: 15762 [2022-11-02 20:06:06,040 INFO L226 Difference]: Without dead ends: 10065 [2022-11-02 20:06:06,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:06,048 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 831 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:06,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1569 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-11-02 20:06:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10063. [2022-11-02 20:06:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10063 states, 10062 states have (on average 1.4234744583581793) internal successors, (14323), 10062 states have internal predecessors, (14323), 0 states have call successors, (0), 0 states 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 20:06:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10063 states to 10063 states and 14323 transitions. [2022-11-02 20:06:07,517 INFO L78 Accepts]: Start accepts. Automaton has 10063 states and 14323 transitions. Word has length 152 [2022-11-02 20:06:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 10063 states and 14323 transitions. [2022-11-02 20:06:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10063 states and 14323 transitions. [2022-11-02 20:06:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:06:07,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:07,535 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] [2022-11-02 20:06:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:06:07,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash -333116525, now seen corresponding path program 1 times [2022-11-02 20:06:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:07,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089171892] [2022-11-02 20:06:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:07,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:07,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089171892] [2022-11-02 20:06:07,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089171892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:07,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:07,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505791625] [2022-11-02 20:06:07,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:07,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:07,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:07,873 INFO L87 Difference]: Start difference. First operand 10063 states and 14323 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:09,027 INFO L93 Difference]: Finished difference Result 18550 states and 26416 transitions. [2022-11-02 20:06:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-11-02 20:06:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:09,048 INFO L225 Difference]: With dead ends: 18550 [2022-11-02 20:06:09,048 INFO L226 Difference]: Without dead ends: 8561 [2022-11-02 20:06:09,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:09,060 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 65 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1390 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 20:06:09,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:06:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2022-11-02 20:06:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 8561. [2022-11-02 20:06:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8560 states have (on average 1.424766355140187) internal successors, (12196), 8560 states have internal predecessors, (12196), 0 states have call successors, (0), 0 states 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 20:06:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 12196 transitions. [2022-11-02 20:06:10,056 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 12196 transitions. Word has length 152 [2022-11-02 20:06:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:10,056 INFO L495 AbstractCegarLoop]: Abstraction has 8561 states and 12196 transitions. [2022-11-02 20:06:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 20:06:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 12196 transitions. [2022-11-02 20:06:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:06:10,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:10,070 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] [2022-11-02 20:06:10,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:06:10,071 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1970649822, now seen corresponding path program 1 times [2022-11-02 20:06:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:10,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167561214] [2022-11-02 20:06:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:10,189 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 20:06:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:10,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167561214] [2022-11-02 20:06:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167561214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:10,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:10,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:06:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580691019] [2022-11-02 20:06:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:06:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:06:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:06:10,193 INFO L87 Difference]: Start difference. First operand 8561 states and 12196 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:13,145 INFO L93 Difference]: Finished difference Result 23111 states and 33322 transitions. [2022-11-02 20:06:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:06:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-11-02 20:06:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:13,187 INFO L225 Difference]: With dead ends: 23111 [2022-11-02 20:06:13,188 INFO L226 Difference]: Without dead ends: 15939 [2022-11-02 20:06:13,202 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 20:06:13,203 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 306 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:13,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 778 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:06:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2022-11-02 20:06:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15937. [2022-11-02 20:06:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15937 states, 15936 states have (on average 1.4254518072289157) internal successors, (22716), 15936 states have internal predecessors, (22716), 0 states have call successors, (0), 0 states 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 20:06:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15937 states to 15937 states and 22716 transitions. [2022-11-02 20:06:15,118 INFO L78 Accepts]: Start accepts. Automaton has 15937 states and 22716 transitions. Word has length 158 [2022-11-02 20:06:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:15,119 INFO L495 AbstractCegarLoop]: Abstraction has 15937 states and 22716 transitions. [2022-11-02 20:06:15,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15937 states and 22716 transitions. [2022-11-02 20:06:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:06:15,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:15,143 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] [2022-11-02 20:06:15,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:06:15,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:15,144 INFO L85 PathProgramCache]: Analyzing trace with hash 242334909, now seen corresponding path program 1 times [2022-11-02 20:06:15,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:15,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215058866] [2022-11-02 20:06:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:15,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:15,396 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 20:06:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215058866] [2022-11-02 20:06:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215058866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:15,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:15,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:06:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228584505] [2022-11-02 20:06:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:06:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:06:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:15,400 INFO L87 Difference]: Start difference. First operand 15937 states and 22716 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:19,968 INFO L93 Difference]: Finished difference Result 34001 states and 51958 transitions. [2022-11-02 20:06:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:06:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-11-02 20:06:19,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:20,050 INFO L225 Difference]: With dead ends: 34001 [2022-11-02 20:06:20,050 INFO L226 Difference]: Without dead ends: 27797 [2022-11-02 20:06:20,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:06:20,066 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1004 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:20,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1413 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:06:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27797 states. [2022-11-02 20:06:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27797 to 22427. [2022-11-02 20:06:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22427 states, 22426 states have (on average 1.4789975920806206) internal successors, (33168), 22426 states have internal predecessors, (33168), 0 states have call successors, (0), 0 states 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 20:06:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22427 states to 22427 states and 33168 transitions. [2022-11-02 20:06:23,442 INFO L78 Accepts]: Start accepts. Automaton has 22427 states and 33168 transitions. Word has length 158 [2022-11-02 20:06:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:23,442 INFO L495 AbstractCegarLoop]: Abstraction has 22427 states and 33168 transitions. [2022-11-02 20:06:23,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 22427 states and 33168 transitions. [2022-11-02 20:06:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:06:23,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:23,467 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] [2022-11-02 20:06:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:06:23,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash 76678749, now seen corresponding path program 1 times [2022-11-02 20:06:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:23,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839100894] [2022-11-02 20:06:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:23,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:23,651 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 20:06:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839100894] [2022-11-02 20:06:23,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839100894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:23,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:23,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:06:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984546017] [2022-11-02 20:06:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:23,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:06:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:06:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:06:23,654 INFO L87 Difference]: Start difference. First operand 22427 states and 33168 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:30,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:30,126 INFO L93 Difference]: Finished difference Result 52446 states and 79337 transitions. [2022-11-02 20:06:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:06:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-11-02 20:06:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:30,198 INFO L225 Difference]: With dead ends: 52446 [2022-11-02 20:06:30,198 INFO L226 Difference]: Without dead ends: 38996 [2022-11-02 20:06:30,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:06:30,218 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 268 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:30,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 730 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38996 states. [2022-11-02 20:06:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38996 to 38994. [2022-11-02 20:06:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38994 states, 38993 states have (on average 1.474341548483061) internal successors, (57489), 38993 states have internal predecessors, (57489), 0 states have call successors, (0), 0 states 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 20:06:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38994 states to 38994 states and 57489 transitions. [2022-11-02 20:06:36,515 INFO L78 Accepts]: Start accepts. Automaton has 38994 states and 57489 transitions. Word has length 158 [2022-11-02 20:06:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:36,515 INFO L495 AbstractCegarLoop]: Abstraction has 38994 states and 57489 transitions. [2022-11-02 20:06:36,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 38994 states and 57489 transitions. [2022-11-02 20:06:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 20:06:36,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:36,549 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] [2022-11-02 20:06:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:06:36,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 871068425, now seen corresponding path program 1 times [2022-11-02 20:06:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613361826] [2022-11-02 20:06:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:37,191 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 20:06:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613361826] [2022-11-02 20:06:37,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613361826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:37,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:37,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:06:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493799009] [2022-11-02 20:06:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:06:37,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:06:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:06:37,194 INFO L87 Difference]: Start difference. First operand 38994 states and 57489 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:06:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:44,344 INFO L93 Difference]: Finished difference Result 53202 states and 80177 transitions. [2022-11-02 20:06:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-11-02 20:06:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:44,400 INFO L225 Difference]: With dead ends: 53202 [2022-11-02 20:06:44,400 INFO L226 Difference]: Without dead ends: 38996 [2022-11-02 20:06:44,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:06:44,416 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 2321 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:44,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 1264 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:06:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38996 states.