./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/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_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/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_c57365eb-9a74-4b8e-b000-39835b395263/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 d49205c4ffe20d5beac0ad3125002385f97f5ba1191dc9c85bce9eb1aba82790 --- 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 21:06:21,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:21,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:21,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:21,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:21,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:21,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:21,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:21,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:21,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:21,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:21,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:21,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:21,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:21,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:21,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:21,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:21,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:21,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:21,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:21,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:21,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:21,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:21,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:21,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:21,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:21,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:21,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:21,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:21,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:21,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:21,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:21,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:21,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:21,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:21,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:21,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:21,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:21,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:21,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:21,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:21,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:06:21,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:21,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:21,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:21,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:21,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:21,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:21,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:21,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:21,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:21,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:21,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:06:21,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:06:21,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:06:21,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:21,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:21,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:21,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:21,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:06:21,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:21,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:21,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:21,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:21,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:21,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:21,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:21,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:21,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:21,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:21,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:06:21,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:06:21,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:21,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:21,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:21,576 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_c57365eb-9a74-4b8e-b000-39835b395263/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d49205c4ffe20d5beac0ad3125002385f97f5ba1191dc9c85bce9eb1aba82790 [2022-11-02 21:06:21,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:06:21,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:06:21,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:06:21,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:06:21,896 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:06:21,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-02 21:06:21,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/data/2c4360b57/a56a210112404b35be6c7c178c861332/FLAGcfd09c7ee [2022-11-02 21:06:22,516 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:06:22,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-02 21:06:22,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/data/2c4360b57/a56a210112404b35be6c7c178c861332/FLAGcfd09c7ee [2022-11-02 21:06:22,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/data/2c4360b57/a56a210112404b35be6c7c178c861332 [2022-11-02 21:06:22,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:06:22,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:06:22,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:22,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:06:22,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:06:22,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:22" (1/1) ... [2022-11-02 21:06:22,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6aaa19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:22, skipping insertion in model container [2022-11-02 21:06:22,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:22" (1/1) ... [2022-11-02 21:06:22,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:06:22,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:06:23,169 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_c57365eb-9a74-4b8e-b000-39835b395263/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7365,7378] [2022-11-02 21:06:23,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:23,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:06:23,271 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_c57365eb-9a74-4b8e-b000-39835b395263/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7365,7378] [2022-11-02 21:06:23,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:23,333 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:06:23,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23 WrapperNode [2022-11-02 21:06:23,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:23,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:23,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:06:23,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:06:23,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,434 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2022-11-02 21:06:23,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:23,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:06:23,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:06:23,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:06:23,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:06:23,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:06:23,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:06:23,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:06:23,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (1/1) ... [2022-11-02 21:06:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:23,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:06:23,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c57365eb-9a74-4b8e-b000-39835b395263/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:06:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:06:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:06:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:06:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:06:23,741 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:06:23,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:06:24,493 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:06:24,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:06:24,501 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:06:24,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:24 BoogieIcfgContainer [2022-11-02 21:06:24,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:06:24,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:06:24,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:06:24,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:06:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:22" (1/3) ... [2022-11-02 21:06:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc79a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:24, skipping insertion in model container [2022-11-02 21:06:24,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:23" (2/3) ... [2022-11-02 21:06:24,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc79a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:24, skipping insertion in model container [2022-11-02 21:06:24,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:24" (3/3) ... [2022-11-02 21:06:24,526 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-11-02 21:06:24,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:06:24,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:06:24,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:06:24,618 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;@9bc61b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:06:24,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:06:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 21:06:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:06:24,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:24,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:24,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:24,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -652154134, now seen corresponding path program 1 times [2022-11-02 21:06:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:24,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252351303] [2022-11-02 21:06:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:24,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:25,206 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 21:06:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252351303] [2022-11-02 21:06:25,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252351303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:25,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:25,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:25,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89870085] [2022-11-02 21:06:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:25,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:25,259 INFO L87 Difference]: Start difference. First operand has 163 states, 161 states have (on average 1.7080745341614907) internal successors, (275), 162 states have internal predecessors, (275), 0 states have call successors, (0), 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 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:25,376 INFO L93 Difference]: Finished difference Result 385 states and 627 transitions. [2022-11-02 21:06:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-02 21:06:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:25,396 INFO L225 Difference]: With dead ends: 385 [2022-11-02 21:06:25,396 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 21:06:25,400 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 21:06:25,404 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 212 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:25,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 609 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 21:06:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-11-02 21:06:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5019455252918288) internal successors, (386), 257 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 21:06:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2022-11-02 21:06:25,472 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 73 [2022-11-02 21:06:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2022-11-02 21:06:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2022-11-02 21:06:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:06:25,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:25,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:06:25,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -399717739, now seen corresponding path program 1 times [2022-11-02 21:06:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:25,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390399291] [2022-11-02 21:06:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:25,629 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 21:06:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:25,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390399291] [2022-11-02 21:06:25,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390399291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:25,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:25,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292559658] [2022-11-02 21:06:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:25,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:25,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:25,633 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:25,715 INFO L93 Difference]: Finished difference Result 654 states and 1018 transitions. [2022-11-02 21:06:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:25,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-02 21:06:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:25,719 INFO L225 Difference]: With dead ends: 654 [2022-11-02 21:06:25,719 INFO L226 Difference]: Without dead ends: 440 [2022-11-02 21:06:25,721 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 21:06:25,722 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 168 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:25,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 539 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-02 21:06:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2022-11-02 21:06:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.540045766590389) internal successors, (673), 437 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:06:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 673 transitions. [2022-11-02 21:06:25,802 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 673 transitions. Word has length 74 [2022-11-02 21:06:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:25,806 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 673 transitions. [2022-11-02 21:06:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 673 transitions. [2022-11-02 21:06:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 21:06:25,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:25,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:25,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:06:25,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1868398039, now seen corresponding path program 1 times [2022-11-02 21:06:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:25,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988739307] [2022-11-02 21:06:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:25,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988739307] [2022-11-02 21:06:25,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988739307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:25,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:25,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158230907] [2022-11-02 21:06:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:25,916 INFO L87 Difference]: Start difference. First operand 438 states and 673 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:25,997 INFO L93 Difference]: Finished difference Result 1162 states and 1827 transitions. [2022-11-02 21:06:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-02 21:06:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:26,002 INFO L225 Difference]: With dead ends: 1162 [2022-11-02 21:06:26,002 INFO L226 Difference]: Without dead ends: 768 [2022-11-02 21:06:26,004 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 21:06:26,005 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 163 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:26,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-02 21:06:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2022-11-02 21:06:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 1.5594771241830065) internal successors, (1193), 765 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 21:06:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1193 transitions. [2022-11-02 21:06:26,110 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1193 transitions. Word has length 75 [2022-11-02 21:06:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:26,111 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1193 transitions. [2022-11-02 21:06:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1193 transitions. [2022-11-02 21:06:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:06:26,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:26,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:06:26,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:26,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1093755554, now seen corresponding path program 1 times [2022-11-02 21:06:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:26,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964601680] [2022-11-02 21:06:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:26,294 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 21:06:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:26,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964601680] [2022-11-02 21:06:26,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964601680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:26,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:26,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786833458] [2022-11-02 21:06:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:26,301 INFO L87 Difference]: Start difference. First operand 766 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 21:06:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:26,481 INFO L93 Difference]: Finished difference Result 2082 states and 3283 transitions. [2022-11-02 21:06:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:26,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-02 21:06:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:26,489 INFO L225 Difference]: With dead ends: 2082 [2022-11-02 21:06:26,489 INFO L226 Difference]: Without dead ends: 1360 [2022-11-02 21:06:26,491 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 21:06:26,503 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 158 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:26,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 509 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2022-11-02 21:06:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2022-11-02 21:06:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.565954310980103) internal successors, (2125), 1357 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states 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 21:06:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2125 transitions. [2022-11-02 21:06:26,681 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2125 transitions. Word has length 76 [2022-11-02 21:06:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:26,683 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2125 transitions. [2022-11-02 21:06:26,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 21:06:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2125 transitions. [2022-11-02 21:06:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:06:26,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:26,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:26,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:06:26,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:26,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2108543356, now seen corresponding path program 1 times [2022-11-02 21:06:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:26,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944722400] [2022-11-02 21:06:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:26,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944722400] [2022-11-02 21:06:26,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944722400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:26,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:26,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368036029] [2022-11-02 21:06:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:26,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:26,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:26,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:26,808 INFO L87 Difference]: Start difference. First operand 1358 states and 2125 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:27,076 INFO L93 Difference]: Finished difference Result 3730 states and 5871 transitions. [2022-11-02 21:06:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 21:06:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:27,088 INFO L225 Difference]: With dead ends: 3730 [2022-11-02 21:06:27,088 INFO L226 Difference]: Without dead ends: 2416 [2022-11-02 21:06:27,090 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 21:06:27,096 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 153 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:27,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 494 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-11-02 21:06:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-11-02 21:06:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 1.563613758806465) internal successors, (3773), 2413 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states 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 21:06:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3773 transitions. [2022-11-02 21:06:27,357 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3773 transitions. Word has length 77 [2022-11-02 21:06:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:27,359 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3773 transitions. [2022-11-02 21:06:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3773 transitions. [2022-11-02 21:06:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 21:06:27,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:27,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:06:27,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash -741254085, now seen corresponding path program 1 times [2022-11-02 21:06:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072954011] [2022-11-02 21:06:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:27,537 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 21:06:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:27,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072954011] [2022-11-02 21:06:27,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072954011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:27,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:27,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:27,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765257878] [2022-11-02 21:06:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:27,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:27,540 INFO L87 Difference]: Start difference. First operand 2414 states and 3773 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:27,963 INFO L93 Difference]: Finished difference Result 6642 states and 10399 transitions. [2022-11-02 21:06:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-02 21:06:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:27,979 INFO L225 Difference]: With dead ends: 6642 [2022-11-02 21:06:27,980 INFO L226 Difference]: Without dead ends: 4272 [2022-11-02 21:06:27,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:27,986 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 148 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:27,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-11-02 21:06:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4270. [2022-11-02 21:06:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4270 states, 4269 states have (on average 1.554696650269384) internal successors, (6637), 4269 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states 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 21:06:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6637 transitions. [2022-11-02 21:06:28,419 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6637 transitions. Word has length 78 [2022-11-02 21:06:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:28,420 INFO L495 AbstractCegarLoop]: Abstraction has 4270 states and 6637 transitions. [2022-11-02 21:06:28,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6637 transitions. [2022-11-02 21:06:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:06:28,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:28,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:28,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:06:28,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:28,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1744404253, now seen corresponding path program 1 times [2022-11-02 21:06:28,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:28,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429122698] [2022-11-02 21:06:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:28,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429122698] [2022-11-02 21:06:28,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429122698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:28,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:28,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:06:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36719193] [2022-11-02 21:06:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:06:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:06:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:06:28,721 INFO L87 Difference]: Start difference. First operand 4270 states and 6637 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:31,888 INFO L93 Difference]: Finished difference Result 33852 states and 52788 transitions. [2022-11-02 21:06:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:06:31,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-02 21:06:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:32,001 INFO L225 Difference]: With dead ends: 33852 [2022-11-02 21:06:32,002 INFO L226 Difference]: Without dead ends: 29626 [2022-11-02 21:06:32,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:32,016 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 2559 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:32,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 2474 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:06:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29626 states. [2022-11-02 21:06:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29626 to 8494. [2022-11-02 21:06:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 1.5425644648534087) internal successors, (13101), 8493 states have internal predecessors, (13101), 0 states have call successors, (0), 0 states 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 21:06:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 13101 transitions. [2022-11-02 21:06:33,700 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 13101 transitions. Word has length 79 [2022-11-02 21:06:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:33,701 INFO L495 AbstractCegarLoop]: Abstraction has 8494 states and 13101 transitions. [2022-11-02 21:06:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 13101 transitions. [2022-11-02 21:06:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:06:33,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:33,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:33,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:06:33,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1738586808, now seen corresponding path program 1 times [2022-11-02 21:06:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:33,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647541647] [2022-11-02 21:06:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:34,013 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 21:06:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:34,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647541647] [2022-11-02 21:06:34,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647541647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:34,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:34,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:06:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832122871] [2022-11-02 21:06:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:06:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:06:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:06:34,016 INFO L87 Difference]: Start difference. First operand 8494 states and 13101 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:40,473 INFO L93 Difference]: Finished difference Result 51514 states and 78771 transitions. [2022-11-02 21:06:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:06:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-02 21:06:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:40,589 INFO L225 Difference]: With dead ends: 51514 [2022-11-02 21:06:40,589 INFO L226 Difference]: Without dead ends: 43064 [2022-11-02 21:06:40,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:06:40,611 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 981 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:40,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1831 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:06:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43064 states. [2022-11-02 21:06:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43064 to 43054. [2022-11-02 21:06:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43054 states, 43053 states have (on average 1.5232620258750842) internal successors, (65581), 43053 states have internal predecessors, (65581), 0 states have call successors, (0), 0 states 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 21:06:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43054 states to 43054 states and 65581 transitions. [2022-11-02 21:06:46,927 INFO L78 Accepts]: Start accepts. Automaton has 43054 states and 65581 transitions. Word has length 80 [2022-11-02 21:06:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:46,928 INFO L495 AbstractCegarLoop]: Abstraction has 43054 states and 65581 transitions. [2022-11-02 21:06:46,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 43054 states and 65581 transitions. [2022-11-02 21:06:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:06:46,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:46,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:46,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:06:46,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1401026767, now seen corresponding path program 1 times [2022-11-02 21:06:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:46,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731690933] [2022-11-02 21:06:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:47,107 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 21:06:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:47,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731690933] [2022-11-02 21:06:47,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731690933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:47,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:47,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:06:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233109924] [2022-11-02 21:06:47,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:06:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:06:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:06:47,111 INFO L87 Difference]: Start difference. First operand 43054 states and 65581 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:04,063 INFO L93 Difference]: Finished difference Result 129074 states and 196655 transitions. [2022-11-02 21:07:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:04,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 21:07:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:04,466 INFO L225 Difference]: With dead ends: 129074 [2022-11-02 21:07:04,466 INFO L226 Difference]: Without dead ends: 86064 [2022-11-02 21:07:04,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:04,548 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 987 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:04,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 254 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:07:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86064 states. [2022-11-02 21:07:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86064 to 86062. [2022-11-02 21:07:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86062 states, 86061 states have (on average 1.5153553874577335) internal successors, (130413), 86061 states have internal predecessors, (130413), 0 states have call successors, (0), 0 states 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 21:07:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86062 states to 86062 states and 130413 transitions. [2022-11-02 21:07:21,988 INFO L78 Accepts]: Start accepts. Automaton has 86062 states and 130413 transitions. Word has length 82 [2022-11-02 21:07:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:21,988 INFO L495 AbstractCegarLoop]: Abstraction has 86062 states and 130413 transitions. [2022-11-02 21:07:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 86062 states and 130413 transitions. [2022-11-02 21:07:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:07:21,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:21,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:07:21,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash 830610186, now seen corresponding path program 1 times [2022-11-02 21:07:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:21,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984163945] [2022-11-02 21:07:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:22,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984163945] [2022-11-02 21:07:22,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984163945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:22,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:22,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181440604] [2022-11-02 21:07:22,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:22,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:22,329 INFO L87 Difference]: Start difference. First operand 86062 states and 130413 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)