./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6327d27f7abe073a313b5cd298156d916d823d684efcd0c205043cb09610f085 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:19:14,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:19:14,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:19:14,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:19:14,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:19:14,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:19:14,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:19:14,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:19:14,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:19:14,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:19:14,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:19:14,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:19:14,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:19:14,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:19:14,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:19:14,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:19:14,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:19:14,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:19:14,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:19:14,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:19:14,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:19:14,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:19:14,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:19:14,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:19:14,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:19:14,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:19:14,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:19:14,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:19:14,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:19:14,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:19:14,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:19:14,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:19:14,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:19:14,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:19:14,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:19:14,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:19:14,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:19:14,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:19:14,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:19:14,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:19:14,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:19:14,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:19:14,525 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:19:14,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:19:14,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:19:14,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:19:14,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:19:14,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:19:14,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:19:14,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:19:14,529 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:19:14,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:19:14,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:19:14,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:19:14,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:19:14,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:19:14,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:19:14,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:19:14,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:19:14,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:19:14,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:19:14,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:19:14,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:19:14,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:19:14,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:19:14,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:19:14,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:19:14,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:19:14,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:19:14,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:19:14,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:19:14,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:19:14,538 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:19:14,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:19:14,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:19:14,539 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_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6327d27f7abe073a313b5cd298156d916d823d684efcd0c205043cb09610f085 [2022-11-16 11:19:14,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:19:14,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:19:14,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:19:14,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:19:14,912 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:19:14,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2022-11-16 11:19:14,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/data/d0c2dccc6/0f04c5b5cdc345cb9720208dfd234c08/FLAGf3b172ccc [2022-11-16 11:19:15,576 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:19:15,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2022-11-16 11:19:15,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/data/d0c2dccc6/0f04c5b5cdc345cb9720208dfd234c08/FLAGf3b172ccc [2022-11-16 11:19:15,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/data/d0c2dccc6/0f04c5b5cdc345cb9720208dfd234c08 [2022-11-16 11:19:15,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:19:15,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:19:15,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:19:15,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:19:15,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:19:15,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:19:15" (1/1) ... [2022-11-16 11:19:15,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f821718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:15, skipping insertion in model container [2022-11-16 11:19:15,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:19:15" (1/1) ... [2022-11-16 11:19:15,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:19:15,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:19:16,274 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2022-11-16 11:19:16,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:19:16,290 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:19:16,366 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2022-11-16 11:19:16,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:19:16,383 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:19:16,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16 WrapperNode [2022-11-16 11:19:16,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:19:16,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:19:16,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:19:16,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:19:16,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,455 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 492 [2022-11-16 11:19:16,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:19:16,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:19:16,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:19:16,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:19:16,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:19:16,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:19:16,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:19:16,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:19:16,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (1/1) ... [2022-11-16 11:19:16,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:19:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:16,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:19:16,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a025c6bb-8c3e-4b83-9203-c89dc593236e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:19:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:19:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:19:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:19:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:19:16,823 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:19:16,826 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:19:17,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:19:17,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:19:17,595 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:19:17,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:19:17 BoogieIcfgContainer [2022-11-16 11:19:17,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:19:17,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:19:17,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:19:17,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:19:17,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:19:15" (1/3) ... [2022-11-16 11:19:17,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19933cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:19:17, skipping insertion in model container [2022-11-16 11:19:17,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:16" (2/3) ... [2022-11-16 11:19:17,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19933cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:19:17, skipping insertion in model container [2022-11-16 11:19:17,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:19:17" (3/3) ... [2022-11-16 11:19:17,606 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals.c [2022-11-16 11:19:17,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:19:17,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:19:17,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:19:17,743 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;@385bb45f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:19:17,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:19:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7984496124031009) internal successors, (232), 130 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:19:17,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:17,758 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] [2022-11-16 11:19:17,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 721418122, now seen corresponding path program 1 times [2022-11-16 11:19:17,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:17,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824751038] [2022-11-16 11:19:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:17,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:18,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:18,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824751038] [2022-11-16 11:19:18,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824751038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:18,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:18,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292389719] [2022-11-16 11:19:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:19:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:19:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:19:18,160 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7984496124031009) internal successors, (232), 130 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:18,212 INFO L93 Difference]: Finished difference Result 196 states and 336 transitions. [2022-11-16 11:19:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:19:18,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-16 11:19:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:18,231 INFO L225 Difference]: With dead ends: 196 [2022-11-16 11:19:18,232 INFO L226 Difference]: Without dead ends: 127 [2022-11-16 11:19:18,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:19:18,243 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:18,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-16 11:19:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-16 11:19:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.7857142857142858) internal successors, (225), 126 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 225 transitions. [2022-11-16 11:19:18,320 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 225 transitions. Word has length 29 [2022-11-16 11:19:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:18,321 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 225 transitions. [2022-11-16 11:19:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 225 transitions. [2022-11-16 11:19:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:19:18,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:18,325 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] [2022-11-16 11:19:18,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:19:18,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 587404616, now seen corresponding path program 1 times [2022-11-16 11:19:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:18,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290159665] [2022-11-16 11:19:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290159665] [2022-11-16 11:19:18,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290159665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:18,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:18,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:19:18,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095166327] [2022-11-16 11:19:18,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:19:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:19:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:19:18,683 INFO L87 Difference]: Start difference. First operand 127 states and 225 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:18,868 INFO L93 Difference]: Finished difference Result 191 states and 326 transitions. [2022-11-16 11:19:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:19:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-16 11:19:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:18,870 INFO L225 Difference]: With dead ends: 191 [2022-11-16 11:19:18,870 INFO L226 Difference]: Without dead ends: 127 [2022-11-16 11:19:18,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:19:18,872 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 3 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:18,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 828 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:19:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-16 11:19:18,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-16 11:19:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 126 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2022-11-16 11:19:18,882 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 29 [2022-11-16 11:19:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:18,882 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2022-11-16 11:19:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2022-11-16 11:19:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:19:18,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:18,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:19:18,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:18,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash -891757768, now seen corresponding path program 1 times [2022-11-16 11:19:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:18,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099955720] [2022-11-16 11:19:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:19,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099955720] [2022-11-16 11:19:19,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099955720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:19,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:19,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587490792] [2022-11-16 11:19:19,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:19,508 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:20,432 INFO L93 Difference]: Finished difference Result 1087 states and 1716 transitions. [2022-11-16 11:19:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:19:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-16 11:19:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:20,442 INFO L225 Difference]: With dead ends: 1087 [2022-11-16 11:19:20,442 INFO L226 Difference]: Without dead ends: 1027 [2022-11-16 11:19:20,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:19:20,452 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1859 mSDsluCounter, 5108 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:20,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 5268 Invalid, 394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:19:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-16 11:19:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 185. [2022-11-16 11:19:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4021739130434783) internal successors, (258), 184 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 258 transitions. [2022-11-16 11:19:20,496 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 258 transitions. Word has length 89 [2022-11-16 11:19:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:20,497 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 258 transitions. [2022-11-16 11:19:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 258 transitions. [2022-11-16 11:19:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:19:20,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:20,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:19:20,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:20,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 598555528, now seen corresponding path program 1 times [2022-11-16 11:19:20,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:20,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994909611] [2022-11-16 11:19:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:20,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:20,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994909611] [2022-11-16 11:19:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994909611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:20,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:20,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592641049] [2022-11-16 11:19:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:20,661 INFO L87 Difference]: Start difference. First operand 185 states and 258 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:20,703 INFO L93 Difference]: Finished difference Result 410 states and 621 transitions. [2022-11-16 11:19:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-16 11:19:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:20,708 INFO L225 Difference]: With dead ends: 410 [2022-11-16 11:19:20,709 INFO L226 Difference]: Without dead ends: 292 [2022-11-16 11:19:20,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:20,722 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 67 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:20,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 254 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-16 11:19:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-11-16 11:19:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.4740484429065743) internal successors, (426), 289 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 426 transitions. [2022-11-16 11:19:20,765 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 426 transitions. Word has length 91 [2022-11-16 11:19:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:20,767 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 426 transitions. [2022-11-16 11:19:20,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 426 transitions. [2022-11-16 11:19:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 11:19:20,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:20,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:19:20,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash 665049040, now seen corresponding path program 1 times [2022-11-16 11:19:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180768139] [2022-11-16 11:19:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:21,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:21,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180768139] [2022-11-16 11:19:21,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180768139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:21,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:21,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612717795] [2022-11-16 11:19:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:21,544 INFO L87 Difference]: Start difference. First operand 290 states and 426 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:22,167 INFO L93 Difference]: Finished difference Result 515 states and 786 transitions. [2022-11-16 11:19:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:19:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-16 11:19:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:22,171 INFO L225 Difference]: With dead ends: 515 [2022-11-16 11:19:22,171 INFO L226 Difference]: Without dead ends: 292 [2022-11-16 11:19:22,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:19:22,173 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 529 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:22,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 918 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:19:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-16 11:19:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-11-16 11:19:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.467128027681661) internal successors, (424), 289 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 424 transitions. [2022-11-16 11:19:22,213 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 424 transitions. Word has length 91 [2022-11-16 11:19:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:22,215 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 424 transitions. [2022-11-16 11:19:22,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 424 transitions. [2022-11-16 11:19:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:19:22,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:22,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:22,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:19:22,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1273039064, now seen corresponding path program 1 times [2022-11-16 11:19:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:22,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677005810] [2022-11-16 11:19:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:22,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677005810] [2022-11-16 11:19:22,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677005810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:22,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:22,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:19:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834279609] [2022-11-16 11:19:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:19:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:19:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:19:22,698 INFO L87 Difference]: Start difference. First operand 290 states and 424 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:22,925 INFO L93 Difference]: Finished difference Result 510 states and 771 transitions. [2022-11-16 11:19:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:19:22,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-11-16 11:19:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:22,928 INFO L225 Difference]: With dead ends: 510 [2022-11-16 11:19:22,929 INFO L226 Difference]: Without dead ends: 508 [2022-11-16 11:19:22,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:19:22,931 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 574 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:22,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 920 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-16 11:19:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 296. [2022-11-16 11:19:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4542372881355932) internal successors, (429), 295 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 429 transitions. [2022-11-16 11:19:22,990 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 429 transitions. Word has length 92 [2022-11-16 11:19:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:22,990 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 429 transitions. [2022-11-16 11:19:22,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 429 transitions. [2022-11-16 11:19:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:22,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:22,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:22,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:19:22,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -559062096, now seen corresponding path program 1 times [2022-11-16 11:19:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:22,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071579041] [2022-11-16 11:19:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:23,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071579041] [2022-11-16 11:19:23,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071579041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:23,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:23,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729687290] [2022-11-16 11:19:23,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:23,123 INFO L87 Difference]: Start difference. First operand 296 states and 429 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:23,194 INFO L93 Difference]: Finished difference Result 538 states and 810 transitions. [2022-11-16 11:19:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:23,196 INFO L225 Difference]: With dead ends: 538 [2022-11-16 11:19:23,196 INFO L226 Difference]: Without dead ends: 414 [2022-11-16 11:19:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:23,198 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 87 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 344 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-16 11:19:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2022-11-16 11:19:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4841849148418491) internal successors, (610), 411 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 610 transitions. [2022-11-16 11:19:23,266 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 610 transitions. Word has length 93 [2022-11-16 11:19:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:23,266 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 610 transitions. [2022-11-16 11:19:23,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 610 transitions. [2022-11-16 11:19:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:23,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:23,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:23,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:19:23,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1753924784, now seen corresponding path program 1 times [2022-11-16 11:19:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533476749] [2022-11-16 11:19:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:23,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533476749] [2022-11-16 11:19:23,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533476749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:23,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:23,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:23,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661278824] [2022-11-16 11:19:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:23,377 INFO L87 Difference]: Start difference. First operand 412 states and 610 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:23,528 INFO L93 Difference]: Finished difference Result 1074 states and 1650 transitions. [2022-11-16 11:19:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:23,533 INFO L225 Difference]: With dead ends: 1074 [2022-11-16 11:19:23,533 INFO L226 Difference]: Without dead ends: 731 [2022-11-16 11:19:23,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:23,534 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 85 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-16 11:19:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2022-11-16 11:19:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.5137362637362637) internal successors, (1102), 728 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1102 transitions. [2022-11-16 11:19:23,654 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1102 transitions. Word has length 93 [2022-11-16 11:19:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:23,655 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1102 transitions. [2022-11-16 11:19:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1102 transitions. [2022-11-16 11:19:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:23,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:23,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:23,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:19:23,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:23,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash -598973008, now seen corresponding path program 1 times [2022-11-16 11:19:23,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:23,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945878924] [2022-11-16 11:19:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:23,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945878924] [2022-11-16 11:19:23,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945878924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:23,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:23,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933903537] [2022-11-16 11:19:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:23,772 INFO L87 Difference]: Start difference. First operand 729 states and 1102 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:24,018 INFO L93 Difference]: Finished difference Result 2001 states and 3084 transitions. [2022-11-16 11:19:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:24,024 INFO L225 Difference]: With dead ends: 2001 [2022-11-16 11:19:24,024 INFO L226 Difference]: Without dead ends: 1341 [2022-11-16 11:19:24,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:24,028 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 83 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:24,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 352 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-16 11:19:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2022-11-16 11:19:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1338 states have (on average 1.5231689088191331) internal successors, (2038), 1338 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2038 transitions. [2022-11-16 11:19:24,263 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2038 transitions. Word has length 93 [2022-11-16 11:19:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:24,264 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2038 transitions. [2022-11-16 11:19:24,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2038 transitions. [2022-11-16 11:19:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:24,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:24,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:24,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:19:24,265 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -436058448, now seen corresponding path program 1 times [2022-11-16 11:19:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:24,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030782872] [2022-11-16 11:19:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030782872] [2022-11-16 11:19:24,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030782872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:24,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:24,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115800146] [2022-11-16 11:19:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:24,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:24,368 INFO L87 Difference]: Start difference. First operand 1339 states and 2038 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:24,821 INFO L93 Difference]: Finished difference Result 3783 states and 5808 transitions. [2022-11-16 11:19:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:24,832 INFO L225 Difference]: With dead ends: 3783 [2022-11-16 11:19:24,832 INFO L226 Difference]: Without dead ends: 2513 [2022-11-16 11:19:24,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:24,835 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 81 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:24,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 354 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-16 11:19:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2022-11-16 11:19:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.5195219123505976) internal successors, (3814), 2510 states have internal predecessors, (3814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3814 transitions. [2022-11-16 11:19:25,289 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3814 transitions. Word has length 93 [2022-11-16 11:19:25,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:25,289 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3814 transitions. [2022-11-16 11:19:25,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3814 transitions. [2022-11-16 11:19:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:25,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:25,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:25,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:19:25,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1066059952, now seen corresponding path program 1 times [2022-11-16 11:19:25,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:25,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86741100] [2022-11-16 11:19:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:25,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:25,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86741100] [2022-11-16 11:19:25,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86741100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:25,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057648073] [2022-11-16 11:19:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:25,403 INFO L87 Difference]: Start difference. First operand 2511 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:26,222 INFO L93 Difference]: Finished difference Result 7203 states and 10968 transitions. [2022-11-16 11:19:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:26,240 INFO L225 Difference]: With dead ends: 7203 [2022-11-16 11:19:26,240 INFO L226 Difference]: Without dead ends: 4761 [2022-11-16 11:19:26,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:26,246 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 77 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:26,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2022-11-16 11:19:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 4759. [2022-11-16 11:19:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4758 states have (on average 1.5077763766288357) internal successors, (7174), 4758 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 7174 transitions. [2022-11-16 11:19:27,165 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 7174 transitions. Word has length 93 [2022-11-16 11:19:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:27,165 INFO L495 AbstractCegarLoop]: Abstraction has 4759 states and 7174 transitions. [2022-11-16 11:19:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 7174 transitions. [2022-11-16 11:19:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:27,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:27,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:27,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:19:27,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1149408848, now seen corresponding path program 1 times [2022-11-16 11:19:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:27,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490568573] [2022-11-16 11:19:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490568573] [2022-11-16 11:19:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490568573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:27,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563808270] [2022-11-16 11:19:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:27,294 INFO L87 Difference]: Start difference. First operand 4759 states and 7174 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:28,918 INFO L93 Difference]: Finished difference Result 13755 states and 20712 transitions. [2022-11-16 11:19:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:28,953 INFO L225 Difference]: With dead ends: 13755 [2022-11-16 11:19:28,953 INFO L226 Difference]: Without dead ends: 9065 [2022-11-16 11:19:28,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:28,961 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 75 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:28,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 352 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2022-11-16 11:19:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9063. [2022-11-16 11:19:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9063 states, 9062 states have (on average 1.490840873979254) internal successors, (13510), 9062 states have internal predecessors, (13510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9063 states to 9063 states and 13510 transitions. [2022-11-16 11:19:30,546 INFO L78 Accepts]: Start accepts. Automaton has 9063 states and 13510 transitions. Word has length 93 [2022-11-16 11:19:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:30,546 INFO L495 AbstractCegarLoop]: Abstraction has 9063 states and 13510 transitions. [2022-11-16 11:19:30,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 9063 states and 13510 transitions. [2022-11-16 11:19:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:30,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:30,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:19:30,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:30,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 631524016, now seen corresponding path program 1 times [2022-11-16 11:19:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:30,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045468011] [2022-11-16 11:19:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:30,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:30,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045468011] [2022-11-16 11:19:30,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045468011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:30,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:30,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752928111] [2022-11-16 11:19:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:30,652 INFO L87 Difference]: Start difference. First operand 9063 states and 13510 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:33,694 INFO L93 Difference]: Finished difference Result 26283 states and 39048 transitions. [2022-11-16 11:19:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:33,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:33,758 INFO L225 Difference]: With dead ends: 26283 [2022-11-16 11:19:33,759 INFO L226 Difference]: Without dead ends: 17289 [2022-11-16 11:19:33,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:33,776 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 73 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:33,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 354 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17289 states. [2022-11-16 11:19:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17289 to 17287. [2022-11-16 11:19:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17287 states, 17286 states have (on average 1.4702071040148097) internal successors, (25414), 17286 states have internal predecessors, (25414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17287 states to 17287 states and 25414 transitions. [2022-11-16 11:19:37,029 INFO L78 Accepts]: Start accepts. Automaton has 17287 states and 25414 transitions. Word has length 93 [2022-11-16 11:19:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:37,030 INFO L495 AbstractCegarLoop]: Abstraction has 17287 states and 25414 transitions. [2022-11-16 11:19:37,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17287 states and 25414 transitions. [2022-11-16 11:19:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:19:37,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:37,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:19:37,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -172202064, now seen corresponding path program 1 times [2022-11-16 11:19:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:37,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647614452] [2022-11-16 11:19:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:37,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647614452] [2022-11-16 11:19:37,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647614452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:37,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:37,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063046788] [2022-11-16 11:19:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:37,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:37,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:37,167 INFO L87 Difference]: Start difference. First operand 17287 states and 25414 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:19:41,764 INFO L93 Difference]: Finished difference Result 50187 states and 73416 transitions. [2022-11-16 11:19:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:41,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-11-16 11:19:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:19:41,867 INFO L225 Difference]: With dead ends: 50187 [2022-11-16 11:19:41,868 INFO L226 Difference]: Without dead ends: 32969 [2022-11-16 11:19:41,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:41,893 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 79 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:19:41,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 356 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:19:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32969 states. [2022-11-16 11:19:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32969 to 32967. [2022-11-16 11:19:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32967 states, 32966 states have (on average 1.446520657647273) internal successors, (47686), 32966 states have internal predecessors, (47686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32967 states to 32967 states and 47686 transitions. [2022-11-16 11:19:47,302 INFO L78 Accepts]: Start accepts. Automaton has 32967 states and 47686 transitions. Word has length 93 [2022-11-16 11:19:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:19:47,302 INFO L495 AbstractCegarLoop]: Abstraction has 32967 states and 47686 transitions. [2022-11-16 11:19:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 32967 states and 47686 transitions. [2022-11-16 11:19:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:19:47,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:19:47,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:47,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:19:47,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:19:47,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2039542488, now seen corresponding path program 1 times [2022-11-16 11:19:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:47,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941228505] [2022-11-16 11:19:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:47,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:19:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:47,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941228505] [2022-11-16 11:19:47,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941228505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:47,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:47,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:19:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157858478] [2022-11-16 11:19:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:47,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:47,657 INFO L87 Difference]: Start difference. First operand 32967 states and 47686 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)