./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro --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 0543a7f62c421ec223229fb3e2bfbf903aa6057da67580bb11646235be2c5e7e --- 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-8393723 [2022-11-18 20:26:57,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:26:57,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:26:57,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:26:57,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:26:57,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:26:57,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:26:57,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:26:57,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:26:57,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:26:57,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:26:57,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:26:57,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:26:57,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:26:57,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:26:57,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:26:57,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:26:57,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:26:57,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:26:57,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:26:57,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:26:57,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:26:57,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:26:57,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:26:57,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:26:57,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:26:57,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:26:57,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:26:57,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:26:57,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:26:57,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:26:57,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:26:57,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:26:57,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:26:57,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:26:57,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:26:57,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:26:57,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:26:57,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:26:57,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:26:57,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:26:57,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:26:57,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:26:57,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:26:57,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:26:57,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:26:57,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:26:57,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:26:57,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:26:57,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:26:57,559 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:26:57,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:26:57,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:26:57,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:26:57,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:26:57,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:26:57,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:26:57,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:26:57,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:26:57,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:26:57,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:26:57,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:26:57,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:26:57,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:26:57,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:26:57,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:26:57,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:26:57,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:26:57,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:26:57,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:26:57,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:26:57,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:26:57,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:26:57,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:26:57,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:26:57,567 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_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0543a7f62c421ec223229fb3e2bfbf903aa6057da67580bb11646235be2c5e7e [2022-11-18 20:26:57,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:26:57,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:26:57,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:26:57,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:26:57,921 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:26:57,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem13_label42.c [2022-11-18 20:26:57,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/data/bd9284d32/8de387bbf7194879b8e20d5528d8aaa0/FLAG5b3453287 [2022-11-18 20:26:58,867 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:26:58,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/sv-benchmarks/c/eca-rers2012/Problem13_label42.c [2022-11-18 20:26:58,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/data/bd9284d32/8de387bbf7194879b8e20d5528d8aaa0/FLAG5b3453287 [2022-11-18 20:26:59,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/data/bd9284d32/8de387bbf7194879b8e20d5528d8aaa0 [2022-11-18 20:26:59,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:26:59,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:26:59,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:26:59,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:26:59,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:26:59,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:59" (1/1) ... [2022-11-18 20:26:59,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f46422b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:59, skipping insertion in model container [2022-11-18 20:26:59,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:59" (1/1) ... [2022-11-18 20:26:59,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:26:59,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:26:59,912 WARN L234 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_4e461edb-d268-47f6-b7b8-30e84bd4aef8/sv-benchmarks/c/eca-rers2012/Problem13_label42.c[9228,9241] [2022-11-18 20:27:01,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:27:01,018 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:27:01,075 WARN L234 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_4e461edb-d268-47f6-b7b8-30e84bd4aef8/sv-benchmarks/c/eca-rers2012/Problem13_label42.c[9228,9241] [2022-11-18 20:27:01,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:27:01,815 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:27:01,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01 WrapperNode [2022-11-18 20:27:01,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:27:01,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:27:01,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:27:01,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:27:01,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:01,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:02,679 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-18 20:27:02,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:27:02,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:27:02,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:27:02,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:27:02,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:02,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:02,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:02,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:27:03,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:27:03,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:27:03,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:27:03,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (1/1) ... [2022-11-18 20:27:03,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:27:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:03,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:27:03,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:27:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:27:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:27:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:27:03,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:27:03,738 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:27:03,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:27:10,344 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:27:10,360 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:27:10,360 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:27:10,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:27:10 BoogieIcfgContainer [2022-11-18 20:27:10,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:27:10,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:27:10,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:27:10,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:27:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:26:59" (1/3) ... [2022-11-18 20:27:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef30b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:27:10, skipping insertion in model container [2022-11-18 20:27:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:01" (2/3) ... [2022-11-18 20:27:10,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef30b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:27:10, skipping insertion in model container [2022-11-18 20:27:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:27:10" (3/3) ... [2022-11-18 20:27:10,375 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2022-11-18 20:27:10,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:27:10,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:27:10,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:27:10,482 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;@1c204495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:27:10,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:27:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:27:10,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:10,502 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] [2022-11-18 20:27:10,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times [2022-11-18 20:27:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661573998] [2022-11-18 20:27:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:11,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661573998] [2022-11-18 20:27:11,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661573998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:11,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348270213] [2022-11-18 20:27:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:11,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:11,119 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:17,417 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2022-11-18 20:27:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:17,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-18 20:27:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:17,445 INFO L225 Difference]: With dead ends: 3121 [2022-11-18 20:27:17,445 INFO L226 Difference]: Without dead ends: 1944 [2022-11-18 20:27:17,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:17,457 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:17,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 20:27:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-11-18 20:27:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2022-11-18 20:27:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2022-11-18 20:27:17,608 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 65 [2022-11-18 20:27:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:17,609 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2022-11-18 20:27:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2022-11-18 20:27:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:27:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:17,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:27:17,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -746498798, now seen corresponding path program 1 times [2022-11-18 20:27:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:17,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121161548] [2022-11-18 20:27:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:18,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:18,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121161548] [2022-11-18 20:27:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121161548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:18,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:18,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827109733] [2022-11-18 20:27:18,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:18,035 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:23,310 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2022-11-18 20:27:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-11-18 20:27:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:23,325 INFO L225 Difference]: With dead ends: 5351 [2022-11-18 20:27:23,325 INFO L226 Difference]: Without dead ends: 3480 [2022-11-18 20:27:23,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:23,330 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:23,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:27:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-11-18 20:27:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2022-11-18 20:27:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2022-11-18 20:27:23,417 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 130 [2022-11-18 20:27:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2022-11-18 20:27:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2022-11-18 20:27:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:27:23,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:23,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:23,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:27:23,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1004753335, now seen corresponding path program 1 times [2022-11-18 20:27:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:23,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141906295] [2022-11-18 20:27:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:23,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:23,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141906295] [2022-11-18 20:27:23,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141906295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:23,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:23,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282476969] [2022-11-18 20:27:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:23,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:23,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:23,712 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:29,020 INFO L93 Difference]: Finished difference Result 10144 states and 15439 transitions. [2022-11-18 20:27:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-11-18 20:27:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:29,050 INFO L225 Difference]: With dead ends: 10144 [2022-11-18 20:27:29,050 INFO L226 Difference]: Without dead ends: 6667 [2022-11-18 20:27:29,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:29,062 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 977 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:29,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 879 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:27:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2022-11-18 20:27:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6657. [2022-11-18 20:27:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2022-11-18 20:27:29,235 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 132 [2022-11-18 20:27:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:29,238 INFO L495 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2022-11-18 20:27:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2022-11-18 20:27:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:27:29,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:29,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:29,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:27:29,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:29,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -894756506, now seen corresponding path program 1 times [2022-11-18 20:27:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669753398] [2022-11-18 20:27:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669753398] [2022-11-18 20:27:29,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669753398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:29,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:29,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430470919] [2022-11-18 20:27:29,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:29,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:29,489 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:34,160 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2022-11-18 20:27:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-11-18 20:27:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:34,200 INFO L225 Difference]: With dead ends: 19637 [2022-11-18 20:27:34,201 INFO L226 Difference]: Without dead ends: 12982 [2022-11-18 20:27:34,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:34,209 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 792 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:34,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1162 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:27:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-11-18 20:27:34,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12964. [2022-11-18 20:27:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12964 states, 12963 states have (on average 1.2390650312427678) internal successors, (16062), 12963 states have internal predecessors, (16062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 16062 transitions. [2022-11-18 20:27:34,499 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 16062 transitions. Word has length 138 [2022-11-18 20:27:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:34,501 INFO L495 AbstractCegarLoop]: Abstraction has 12964 states and 16062 transitions. [2022-11-18 20:27:34,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 16062 transitions. [2022-11-18 20:27:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-18 20:27:34,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:34,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:34,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:27:34,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1196327346, now seen corresponding path program 1 times [2022-11-18 20:27:34,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:34,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318833084] [2022-11-18 20:27:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:34,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318833084] [2022-11-18 20:27:34,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318833084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:34,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:34,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:34,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636893928] [2022-11-18 20:27:34,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:34,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:34,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:34,955 INFO L87 Difference]: Start difference. First operand 12964 states and 16062 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:38,986 INFO L93 Difference]: Finished difference Result 26713 states and 32924 transitions. [2022-11-18 20:27:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-11-18 20:27:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:39,033 INFO L225 Difference]: With dead ends: 26713 [2022-11-18 20:27:39,033 INFO L226 Difference]: Without dead ends: 13751 [2022-11-18 20:27:39,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:39,046 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:39,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:27:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2022-11-18 20:27:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13751. [2022-11-18 20:27:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13751 states, 13750 states have (on average 1.2257454545454545) internal successors, (16854), 13750 states have internal predecessors, (16854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 16854 transitions. [2022-11-18 20:27:39,302 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 16854 transitions. Word has length 154 [2022-11-18 20:27:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:39,304 INFO L495 AbstractCegarLoop]: Abstraction has 13751 states and 16854 transitions. [2022-11-18 20:27:39,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 16854 transitions. [2022-11-18 20:27:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 20:27:39,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:39,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:27:39,310 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash -62914249, now seen corresponding path program 1 times [2022-11-18 20:27:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:39,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558146690] [2022-11-18 20:27:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:39,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558146690] [2022-11-18 20:27:39,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558146690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:39,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:39,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:27:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205755201] [2022-11-18 20:27:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:39,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:39,486 INFO L87 Difference]: Start difference. First operand 13751 states and 16854 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:43,775 INFO L93 Difference]: Finished difference Result 26728 states and 32944 transitions. [2022-11-18 20:27:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-11-18 20:27:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:43,802 INFO L225 Difference]: With dead ends: 26728 [2022-11-18 20:27:43,802 INFO L226 Difference]: Without dead ends: 13766 [2022-11-18 20:27:43,813 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 [2022-11-18 20:27:43,814 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1059 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:43,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1309 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:27:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13766 states. [2022-11-18 20:27:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13766 to 13748. [2022-11-18 20:27:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 13747 states have (on average 1.203753546228268) internal successors, (16548), 13747 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 16548 transitions. [2022-11-18 20:27:44,038 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 16548 transitions. Word has length 161 [2022-11-18 20:27:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:44,038 INFO L495 AbstractCegarLoop]: Abstraction has 13748 states and 16548 transitions. [2022-11-18 20:27:44,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 16548 transitions. [2022-11-18 20:27:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-18 20:27:44,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:44,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:44,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:27:44,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2120074091, now seen corresponding path program 1 times [2022-11-18 20:27:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:44,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927705734] [2022-11-18 20:27:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:44,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927705734] [2022-11-18 20:27:44,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927705734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:44,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:44,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:27:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999267903] [2022-11-18 20:27:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:44,283 INFO L87 Difference]: Start difference. First operand 13748 states and 16548 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:48,993 INFO L93 Difference]: Finished difference Result 33020 states and 40677 transitions. [2022-11-18 20:27:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:48,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2022-11-18 20:27:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:49,031 INFO L225 Difference]: With dead ends: 33020 [2022-11-18 20:27:49,031 INFO L226 Difference]: Without dead ends: 20061 [2022-11-18 20:27:49,040 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 [2022-11-18 20:27:49,041 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:49,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 945 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:27:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20061 states. [2022-11-18 20:27:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20061 to 20051. [2022-11-18 20:27:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20051 states, 20050 states have (on average 1.1791022443890273) internal successors, (23641), 20050 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 23641 transitions. [2022-11-18 20:27:49,324 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 23641 transitions. Word has length 243 [2022-11-18 20:27:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:49,324 INFO L495 AbstractCegarLoop]: Abstraction has 20051 states and 23641 transitions. [2022-11-18 20:27:49,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 23641 transitions. [2022-11-18 20:27:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-18 20:27:49,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:49,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:49,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:27:49,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:49,333 INFO L85 PathProgramCache]: Analyzing trace with hash -71323228, now seen corresponding path program 1 times [2022-11-18 20:27:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938218046] [2022-11-18 20:27:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 20:27:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:49,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938218046] [2022-11-18 20:27:49,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938218046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:49,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:49,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:27:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668669611] [2022-11-18 20:27:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:49,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:49,728 INFO L87 Difference]: Start difference. First operand 20051 states and 23641 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:54,564 INFO L93 Difference]: Finished difference Result 45632 states and 54873 transitions. [2022-11-18 20:27:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 332 [2022-11-18 20:27:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:54,606 INFO L225 Difference]: With dead ends: 45632 [2022-11-18 20:27:54,607 INFO L226 Difference]: Without dead ends: 26370 [2022-11-18 20:27:54,619 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 [2022-11-18 20:27:54,619 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 968 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:54,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 787 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:27:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26370 states. [2022-11-18 20:27:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26370 to 26358. [2022-11-18 20:27:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 1.1839738968774898) internal successors, (31206), 26357 states have internal predecessors, (31206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 31206 transitions. [2022-11-18 20:27:55,101 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 31206 transitions. Word has length 332 [2022-11-18 20:27:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:55,102 INFO L495 AbstractCegarLoop]: Abstraction has 26358 states and 31206 transitions. [2022-11-18 20:27:55,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 31206 transitions. [2022-11-18 20:27:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-18 20:27:55,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:55,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:55,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:27:55,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1335303458, now seen corresponding path program 1 times [2022-11-18 20:27:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:55,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892455217] [2022-11-18 20:27:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:55,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-18 20:27:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892455217] [2022-11-18 20:27:55,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892455217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:55,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:55,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:27:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336174067] [2022-11-18 20:27:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:55,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:55,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:55,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:55,747 INFO L87 Difference]: Start difference. First operand 26358 states and 31206 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:00,986 INFO L93 Difference]: Finished difference Result 61391 states and 72386 transitions. [2022-11-18 20:28:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 384 [2022-11-18 20:28:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:01,047 INFO L225 Difference]: With dead ends: 61391 [2022-11-18 20:28:01,048 INFO L226 Difference]: Without dead ends: 35822 [2022-11-18 20:28:01,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:01,070 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 728 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:01,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1226 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 20:28:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35822 states. [2022-11-18 20:28:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35822 to 35812. [2022-11-18 20:28:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35812 states, 35811 states have (on average 1.1522716483761972) internal successors, (41264), 35811 states have internal predecessors, (41264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35812 states to 35812 states and 41264 transitions. [2022-11-18 20:28:01,704 INFO L78 Accepts]: Start accepts. Automaton has 35812 states and 41264 transitions. Word has length 384 [2022-11-18 20:28:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:01,705 INFO L495 AbstractCegarLoop]: Abstraction has 35812 states and 41264 transitions. [2022-11-18 20:28:01,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 35812 states and 41264 transitions. [2022-11-18 20:28:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-18 20:28:01,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:01,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-18 20:28:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:28:01,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -607606650, now seen corresponding path program 1 times [2022-11-18 20:28:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:01,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132088081] [2022-11-18 20:28:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 251 proven. 75 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-18 20:28:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132088081] [2022-11-18 20:28:02,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132088081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671079565] [2022-11-18 20:28:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:02,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:02,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:28:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:28:02,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-11-18 20:28:03,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:03,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671079565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:03,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:03,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-18 20:28:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046620200] [2022-11-18 20:28:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:28:03,423 INFO L87 Difference]: Start difference. First operand 35812 states and 41264 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:08,771 INFO L93 Difference]: Finished difference Result 101690 states and 117796 transitions. [2022-11-18 20:28:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:08,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 392 [2022-11-18 20:28:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:08,853 INFO L225 Difference]: With dead ends: 101690 [2022-11-18 20:28:08,854 INFO L226 Difference]: Without dead ends: 66667 [2022-11-18 20:28:08,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:28:08,880 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1043 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:08,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1139 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 20:28:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66667 states. [2022-11-18 20:28:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66667 to 65861. [2022-11-18 20:28:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65861 states, 65860 states have (on average 1.1312784694807168) internal successors, (74506), 65860 states have internal predecessors, (74506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65861 states to 65861 states and 74506 transitions. [2022-11-18 20:28:09,686 INFO L78 Accepts]: Start accepts. Automaton has 65861 states and 74506 transitions. Word has length 392 [2022-11-18 20:28:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:09,687 INFO L495 AbstractCegarLoop]: Abstraction has 65861 states and 74506 transitions. [2022-11-18 20:28:09,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65861 states and 74506 transitions. [2022-11-18 20:28:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-18 20:28:09,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:09,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:28:09,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:28:09,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:09,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1692395044, now seen corresponding path program 1 times [2022-11-18 20:28:09,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:09,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881789348] [2022-11-18 20:28:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-18 20:28:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881789348] [2022-11-18 20:28:10,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881789348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:10,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:10,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40662805] [2022-11-18 20:28:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:10,917 INFO L87 Difference]: Start difference. First operand 65861 states and 74506 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:17,490 INFO L93 Difference]: Finished difference Result 161805 states and 183745 transitions. [2022-11-18 20:28:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 392 [2022-11-18 20:28:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:17,584 INFO L225 Difference]: With dead ends: 161805 [2022-11-18 20:28:17,584 INFO L226 Difference]: Without dead ends: 96733 [2022-11-18 20:28:17,622 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 [2022-11-18 20:28:17,622 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 975 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:17,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 464 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 20:28:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96733 states. [2022-11-18 20:28:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96733 to 95829. [2022-11-18 20:28:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95829 states, 95828 states have (on average 1.1344596568852527) internal successors, (108713), 95828 states have internal predecessors, (108713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95829 states to 95829 states and 108713 transitions. [2022-11-18 20:28:19,129 INFO L78 Accepts]: Start accepts. Automaton has 95829 states and 108713 transitions. Word has length 392 [2022-11-18 20:28:19,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:19,130 INFO L495 AbstractCegarLoop]: Abstraction has 95829 states and 108713 transitions. [2022-11-18 20:28:19,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 95829 states and 108713 transitions. [2022-11-18 20:28:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-18 20:28:19,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:19,212 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-18 20:28:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:28:19,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -373450363, now seen corresponding path program 1 times [2022-11-18 20:28:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:19,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611006123] [2022-11-18 20:28:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-18 20:28:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611006123] [2022-11-18 20:28:19,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611006123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:19,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:19,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:19,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918812271] [2022-11-18 20:28:19,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:19,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:19,774 INFO L87 Difference]: Start difference. First operand 95829 states and 108713 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:30,528 INFO L93 Difference]: Finished difference Result 267516 states and 305475 transitions. [2022-11-18 20:28:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 427 [2022-11-18 20:28:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:30,916 INFO L225 Difference]: With dead ends: 267516 [2022-11-18 20:28:30,916 INFO L226 Difference]: Without dead ends: 173263 [2022-11-18 20:28:30,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:30,963 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1739 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 6737 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 6737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:30,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 786 Invalid, 7843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1106 Valid, 6737 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-18 20:28:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173263 states. [2022-11-18 20:28:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173263 to 173067. [2022-11-18 20:28:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173067 states, 173066 states have (on average 1.1325274750673153) internal successors, (196002), 173066 states have internal predecessors, (196002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173067 states to 173067 states and 196002 transitions. [2022-11-18 20:28:33,458 INFO L78 Accepts]: Start accepts. Automaton has 173067 states and 196002 transitions. Word has length 427 [2022-11-18 20:28:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:33,458 INFO L495 AbstractCegarLoop]: Abstraction has 173067 states and 196002 transitions. [2022-11-18 20:28:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 173067 states and 196002 transitions. [2022-11-18 20:28:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-18 20:28:33,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:33,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:33,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:28:33,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1281024426, now seen corresponding path program 1 times [2022-11-18 20:28:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:33,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532499020] [2022-11-18 20:28:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 429 proven. 113 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-18 20:28:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532499020] [2022-11-18 20:28:36,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532499020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:36,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13068879] [2022-11-18 20:28:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:36,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:36,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:36,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:28:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:36,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:36,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-18 20:28:37,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:37,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13068879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:37,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:37,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-18 20:28:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596699816] [2022-11-18 20:28:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:37,257 INFO L87 Difference]: Start difference. First operand 173067 states and 196002 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:42,210 INFO L93 Difference]: Finished difference Result 321743 states and 366469 transitions. [2022-11-18 20:28:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:42,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 459 [2022-11-18 20:28:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:42,648 INFO L225 Difference]: With dead ends: 321743 [2022-11-18 20:28:42,648 INFO L226 Difference]: Without dead ends: 178602 [2022-11-18 20:28:42,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:42,732 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 686 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:42,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1185 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:28:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178602 states. [2022-11-18 20:28:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178602 to 178584. [2022-11-18 20:28:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178584 states, 178583 states have (on average 1.1295924024123236) internal successors, (201726), 178583 states have internal predecessors, (201726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178584 states to 178584 states and 201726 transitions. [2022-11-18 20:28:45,164 INFO L78 Accepts]: Start accepts. Automaton has 178584 states and 201726 transitions. Word has length 459 [2022-11-18 20:28:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:45,165 INFO L495 AbstractCegarLoop]: Abstraction has 178584 states and 201726 transitions. [2022-11-18 20:28:45,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 178584 states and 201726 transitions. [2022-11-18 20:28:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-18 20:28:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:45,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:45,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:45,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e461edb-d268-47f6-b7b8-30e84bd4aef8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:28:45,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1823682249, now seen corresponding path program 1 times [2022-11-18 20:28:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:45,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782780718] [2022-11-18 20:28:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-18 20:28:47,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:47,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782780718] [2022-11-18 20:28:47,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782780718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:47,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:47,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:47,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954094660] [2022-11-18 20:28:47,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:47,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:47,404 INFO L87 Difference]: Start difference. First operand 178584 states and 201726 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:53,699 INFO L93 Difference]: Finished difference Result 343737 states and 393111 transitions. [2022-11-18 20:28:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 488 [2022-11-18 20:28:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:53,947 INFO L225 Difference]: With dead ends: 343737 [2022-11-18 20:28:53,947 INFO L226 Difference]: Without dead ends: 195079 [2022-11-18 20:28:54,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:54,019 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1228 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 1155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1155 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:54,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 424 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1155 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 20:28:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195079 states. [2022-11-18 20:28:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195079 to 195079. [2022-11-18 20:28:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195079 states, 195078 states have (on average 1.1295430545730425) internal successors, (220349), 195078 states have internal predecessors, (220349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195079 states to 195079 states and 220349 transitions. [2022-11-18 20:28:57,100 INFO L78 Accepts]: Start accepts. Automaton has 195079 states and 220349 transitions. Word has length 488 [2022-11-18 20:28:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:57,101 INFO L495 AbstractCegarLoop]: Abstraction has 195079 states and 220349 transitions. [2022-11-18 20:28:57,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 195079 states and 220349 transitions. [2022-11-18 20:28:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-18 20:28:57,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:57,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:28:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:28:57,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1347430308, now seen corresponding path program 1 times [2022-11-18 20:28:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:57,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544194930] [2022-11-18 20:28:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-18 20:28:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:57,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544194930] [2022-11-18 20:28:57,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544194930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:57,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:57,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:28:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807830318] [2022-11-18 20:28:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:57,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:57,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:57,431 INFO L87 Difference]: Start difference. First operand 195079 states and 220349 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:03,328 INFO L93 Difference]: Finished difference Result 367115 states and 415229 transitions. [2022-11-18 20:29:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:29:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 495 [2022-11-18 20:29:03,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:03,554 INFO L225 Difference]: With dead ends: 367115 [2022-11-18 20:29:03,554 INFO L226 Difference]: Without dead ends: 171250 [2022-11-18 20:29:03,642 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 [2022-11-18 20:29:03,643 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 1000 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:03,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1624 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-18 20:29:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171250 states. [2022-11-18 20:29:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171250 to 157073. [2022-11-18 20:29:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157073 states, 157072 states have (on average 1.0898186818783742) internal successors, (171180), 157072 states have internal predecessors, (171180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157073 states to 157073 states and 171180 transitions. [2022-11-18 20:29:06,060 INFO L78 Accepts]: Start accepts. Automaton has 157073 states and 171180 transitions. Word has length 495 [2022-11-18 20:29:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:06,061 INFO L495 AbstractCegarLoop]: Abstraction has 157073 states and 171180 transitions. [2022-11-18 20:29:06,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 157073 states and 171180 transitions. [2022-11-18 20:29:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-18 20:29:06,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:06,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:29:06,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:29:06,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1210395816, now seen corresponding path program 1 times [2022-11-18 20:29:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:06,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231055283] [2022-11-18 20:29:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-18 20:29:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:06,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231055283] [2022-11-18 20:29:06,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231055283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:06,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:06,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:29:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657569751] [2022-11-18 20:29:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:29:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:29:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:29:06,391 INFO L87 Difference]: Start difference. First operand 157073 states and 171180 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:12,833 INFO L93 Difference]: Finished difference Result 347976 states and 381843 transitions. [2022-11-18 20:29:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:29:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 509 [2022-11-18 20:29:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:13,069 INFO L225 Difference]: With dead ends: 347976 [2022-11-18 20:29:13,069 INFO L226 Difference]: Without dead ends: 209801 [2022-11-18 20:29:13,122 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 [2022-11-18 20:29:13,122 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 819 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:13,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1689 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:29:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209801 states. [2022-11-18 20:29:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209801 to 207440. [2022-11-18 20:29:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207440 states, 207439 states have (on average 1.0886814919084646) internal successors, (225835), 207439 states have internal predecessors, (225835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207440 states to 207440 states and 225835 transitions. [2022-11-18 20:29:15,876 INFO L78 Accepts]: Start accepts. Automaton has 207440 states and 225835 transitions. Word has length 509 [2022-11-18 20:29:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:15,877 INFO L495 AbstractCegarLoop]: Abstraction has 207440 states and 225835 transitions. [2022-11-18 20:29:15,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 207440 states and 225835 transitions. [2022-11-18 20:29:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-18 20:29:15,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:15,891 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:29:15,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:29:15,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1980193303, now seen corresponding path program 1 times [2022-11-18 20:29:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:15,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120755792] [2022-11-18 20:29:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-18 20:29:17,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:17,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120755792] [2022-11-18 20:29:17,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120755792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:17,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:17,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:29:17,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571106274] [2022-11-18 20:29:17,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:17,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:29:17,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:29:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:29:17,367 INFO L87 Difference]: Start difference. First operand 207440 states and 225835 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)