./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:03:16,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:03:16,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:03:16,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:03:16,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:03:16,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:03:16,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:03:16,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:03:16,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:03:16,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:03:16,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:03:16,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:03:16,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:03:16,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:03:16,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:03:16,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:03:16,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:03:16,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:03:16,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:03:16,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:03:16,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:03:16,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:03:16,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:03:16,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:03:16,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:03:16,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:03:16,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:03:16,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:03:16,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:03:16,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:03:16,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:03:16,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:03:16,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:03:16,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:03:16,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:03:16,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:03:16,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:03:16,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:03:16,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:03:16,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:03:16,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:03:16,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:03:16,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:03:16,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:03:16,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:03:16,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:03:16,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:03:16,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:03:16,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:03:16,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:03:16,489 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:03:16,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:03:16,490 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:03:16,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:03:16,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:03:16,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:03:16,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:03:16,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:03:16,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:03:16,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:03:16,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:03:16,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:03:16,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:03:16,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:03:16,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:03:16,494 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_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 [2022-11-16 12:03:16,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:03:16,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:03:16,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:03:16,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:03:16,791 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:03:16,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-11-16 12:03:16,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/data/e7243c48d/ca1b8a933c474bc0adf70073335acc38/FLAG93265ca40 [2022-11-16 12:03:17,794 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:03:17,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-11-16 12:03:17,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/data/e7243c48d/ca1b8a933c474bc0adf70073335acc38/FLAG93265ca40 [2022-11-16 12:03:18,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/data/e7243c48d/ca1b8a933c474bc0adf70073335acc38 [2022-11-16 12:03:18,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:03:18,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:03:18,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:03:18,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:03:18,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:03:18,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:03:18" (1/1) ... [2022-11-16 12:03:18,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703a1521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:18, skipping insertion in model container [2022-11-16 12:03:18,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:03:18" (1/1) ... [2022-11-16 12:03:18,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:03:18,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:03:19,144 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2022-11-16 12:03:20,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:03:20,965 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:03:21,095 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2022-11-16 12:03:22,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:03:22,331 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:03:22,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22 WrapperNode [2022-11-16 12:03:22,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:03:22,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:22,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:03:22,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:03:22,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:22,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:22,820 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19936 [2022-11-16 12:03:22,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:22,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:03:22,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:03:22,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:03:22,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:22,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:22,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:22,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:03:23,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:03:23,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:03:23,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:03:23,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (1/1) ... [2022-11-16 12:03:23,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:03:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:23,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:03:23,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fd70665-ca58-42d3-b1b7-df94c99a7d79/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:03:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:03:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:03:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:03:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:03:24,302 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:03:24,304 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:03:32,573 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:03:32,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:03:32,599 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:03:32,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:32 BoogieIcfgContainer [2022-11-16 12:03:32,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:03:32,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:03:32,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:03:32,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:03:32,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:03:18" (1/3) ... [2022-11-16 12:03:32,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8f48e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:32, skipping insertion in model container [2022-11-16 12:03:32,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:22" (2/3) ... [2022-11-16 12:03:32,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8f48e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:32, skipping insertion in model container [2022-11-16 12:03:32,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:32" (3/3) ... [2022-11-16 12:03:32,612 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2022-11-16 12:03:32,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:03:32,632 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:03:32,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:03:32,742 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;@6be28764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:03:32,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:03:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 12:03:32,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:32,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:32,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1826416770, now seen corresponding path program 1 times [2022-11-16 12:03:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:32,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711412946] [2022-11-16 12:03:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:33,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711412946] [2022-11-16 12:03:33,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711412946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:33,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:33,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11267971] [2022-11-16 12:03:33,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:33,774 INFO L87 Difference]: Start difference. First operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 0 states have call successors, (0), 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 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:36,018 INFO L93 Difference]: Finished difference Result 4287 states and 8058 transitions. [2022-11-16 12:03:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:36,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-16 12:03:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:36,067 INFO L225 Difference]: With dead ends: 4287 [2022-11-16 12:03:36,080 INFO L226 Difference]: Without dead ends: 2275 [2022-11-16 12:03:36,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:36,093 INFO L413 NwaCegarLoop]: 2669 mSDtfsCounter, 12323 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12323 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:36,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12323 Valid, 2934 Invalid, 1360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:03:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2022-11-16 12:03:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2273. [2022-11-16 12:03:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 1.3036971830985915) internal successors, (2962), 2272 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2962 transitions. [2022-11-16 12:03:36,290 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2962 transitions. Word has length 79 [2022-11-16 12:03:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:36,291 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 2962 transitions. [2022-11-16 12:03:36,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2962 transitions. [2022-11-16 12:03:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 12:03:36,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:36,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:36,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:03:36,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -827934042, now seen corresponding path program 1 times [2022-11-16 12:03:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:36,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956604223] [2022-11-16 12:03:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:36,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956604223] [2022-11-16 12:03:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956604223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:36,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:36,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767433580] [2022-11-16 12:03:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:36,653 INFO L87 Difference]: Start difference. First operand 2273 states and 2962 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:38,456 INFO L93 Difference]: Finished difference Result 3401 states and 4500 transitions. [2022-11-16 12:03:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:38,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 12:03:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:38,466 INFO L225 Difference]: With dead ends: 3401 [2022-11-16 12:03:38,466 INFO L226 Difference]: Without dead ends: 2325 [2022-11-16 12:03:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:38,474 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 7031 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7031 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:38,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7031 Valid, 1437 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:03:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2022-11-16 12:03:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2022-11-16 12:03:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2322 states have (on average 1.2833763996554695) internal successors, (2980), 2322 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2980 transitions. [2022-11-16 12:03:38,585 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2980 transitions. Word has length 80 [2022-11-16 12:03:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:38,587 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 2980 transitions. [2022-11-16 12:03:38,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2980 transitions. [2022-11-16 12:03:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 12:03:38,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:38,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:03:38,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1046816380, now seen corresponding path program 1 times [2022-11-16 12:03:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201597922] [2022-11-16 12:03:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:38,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201597922] [2022-11-16 12:03:38,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201597922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:38,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:38,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791811445] [2022-11-16 12:03:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:38,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:38,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:38,952 INFO L87 Difference]: Start difference. First operand 2323 states and 2980 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:40,130 INFO L93 Difference]: Finished difference Result 4267 states and 5722 transitions. [2022-11-16 12:03:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 12:03:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:40,140 INFO L225 Difference]: With dead ends: 4267 [2022-11-16 12:03:40,140 INFO L226 Difference]: Without dead ends: 2479 [2022-11-16 12:03:40,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:40,144 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 5694 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5694 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:40,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5694 Valid, 1263 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:03:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-11-16 12:03:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2022-11-16 12:03:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.3546042003231018) internal successors, (3354), 2476 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3354 transitions. [2022-11-16 12:03:40,280 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3354 transitions. Word has length 80 [2022-11-16 12:03:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:40,281 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3354 transitions. [2022-11-16 12:03:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3354 transitions. [2022-11-16 12:03:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:03:40,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:40,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:40,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:03:40,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1188468072, now seen corresponding path program 1 times [2022-11-16 12:03:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:40,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437606639] [2022-11-16 12:03:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:40,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437606639] [2022-11-16 12:03:40,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437606639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:40,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:40,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961570392] [2022-11-16 12:03:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:40,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:40,437 INFO L87 Difference]: Start difference. First operand 2477 states and 3354 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:40,778 INFO L93 Difference]: Finished difference Result 4757 states and 6608 transitions. [2022-11-16 12:03:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:03:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:40,792 INFO L225 Difference]: With dead ends: 4757 [2022-11-16 12:03:40,792 INFO L226 Difference]: Without dead ends: 3535 [2022-11-16 12:03:40,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:40,805 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 1446 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 3387 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2022-11-16 12:03:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3529. [2022-11-16 12:03:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3528 states have (on average 1.344954648526077) internal successors, (4745), 3528 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4745 transitions. [2022-11-16 12:03:41,101 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4745 transitions. Word has length 81 [2022-11-16 12:03:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:41,103 INFO L495 AbstractCegarLoop]: Abstraction has 3529 states and 4745 transitions. [2022-11-16 12:03:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4745 transitions. [2022-11-16 12:03:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:03:41,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:41,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:03:41,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -861777195, now seen corresponding path program 1 times [2022-11-16 12:03:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825083942] [2022-11-16 12:03:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:41,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825083942] [2022-11-16 12:03:41,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825083942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:41,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:41,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684586869] [2022-11-16 12:03:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:41,330 INFO L87 Difference]: Start difference. First operand 3529 states and 4745 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:41,858 INFO L93 Difference]: Finished difference Result 6941 states and 9754 transitions. [2022-11-16 12:03:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:03:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:41,877 INFO L225 Difference]: With dead ends: 6941 [2022-11-16 12:03:41,877 INFO L226 Difference]: Without dead ends: 5113 [2022-11-16 12:03:41,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:41,883 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 884 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:41,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2829 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:03:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5113 states. [2022-11-16 12:03:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5113 to 5111. [2022-11-16 12:03:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 1.3749510763209394) internal successors, (7026), 5110 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 7026 transitions. [2022-11-16 12:03:42,386 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 7026 transitions. Word has length 81 [2022-11-16 12:03:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:42,388 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 7026 transitions. [2022-11-16 12:03:42,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 7026 transitions. [2022-11-16 12:03:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:03:42,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:42,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:03:42,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1403577995, now seen corresponding path program 1 times [2022-11-16 12:03:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936337575] [2022-11-16 12:03:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936337575] [2022-11-16 12:03:42,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936337575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005919020] [2022-11-16 12:03:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:42,543 INFO L87 Difference]: Start difference. First operand 5111 states and 7026 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:43,267 INFO L93 Difference]: Finished difference Result 9599 states and 13624 transitions. [2022-11-16 12:03:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:03:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:43,291 INFO L225 Difference]: With dead ends: 9599 [2022-11-16 12:03:43,291 INFO L226 Difference]: Without dead ends: 6958 [2022-11-16 12:03:43,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:43,297 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 921 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:43,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2706 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:03:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2022-11-16 12:03:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6944. [2022-11-16 12:03:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6943 states have (on average 1.380671179605358) internal successors, (9586), 6943 states have internal predecessors, (9586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 9586 transitions. [2022-11-16 12:03:43,869 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 9586 transitions. Word has length 81 [2022-11-16 12:03:43,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:43,870 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 9586 transitions. [2022-11-16 12:03:43,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 9586 transitions. [2022-11-16 12:03:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:03:43,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:43,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:03:43,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 620531610, now seen corresponding path program 1 times [2022-11-16 12:03:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969894189] [2022-11-16 12:03:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969894189] [2022-11-16 12:03:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969894189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:44,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:44,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046263432] [2022-11-16 12:03:44,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:44,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:44,046 INFO L87 Difference]: Start difference. First operand 6944 states and 9586 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:45,069 INFO L93 Difference]: Finished difference Result 17401 states and 24430 transitions. [2022-11-16 12:03:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:03:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:45,117 INFO L225 Difference]: With dead ends: 17401 [2022-11-16 12:03:45,124 INFO L226 Difference]: Without dead ends: 11984 [2022-11-16 12:03:45,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:45,136 INFO L413 NwaCegarLoop]: 2295 mSDtfsCounter, 1454 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:45,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3402 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11984 states. [2022-11-16 12:03:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11984 to 11964. [2022-11-16 12:03:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11964 states, 11963 states have (on average 1.3820947922761848) internal successors, (16534), 11963 states have internal predecessors, (16534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11964 states to 11964 states and 16534 transitions. [2022-11-16 12:03:46,054 INFO L78 Accepts]: Start accepts. Automaton has 11964 states and 16534 transitions. Word has length 81 [2022-11-16 12:03:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 11964 states and 16534 transitions. [2022-11-16 12:03:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 11964 states and 16534 transitions. [2022-11-16 12:03:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:03:46,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:46,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:03:46,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1891437418, now seen corresponding path program 1 times [2022-11-16 12:03:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:46,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099318511] [2022-11-16 12:03:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:46,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:46,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099318511] [2022-11-16 12:03:46,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099318511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:46,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:46,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:46,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031564694] [2022-11-16 12:03:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:46,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:46,287 INFO L87 Difference]: Start difference. First operand 11964 states and 16534 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:48,721 INFO L93 Difference]: Finished difference Result 25907 states and 36252 transitions. [2022-11-16 12:03:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-16 12:03:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:48,754 INFO L225 Difference]: With dead ends: 25907 [2022-11-16 12:03:48,754 INFO L226 Difference]: Without dead ends: 15207 [2022-11-16 12:03:48,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:48,768 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 4751 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4751 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:48,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4751 Valid, 1055 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:03:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15207 states. [2022-11-16 12:03:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15207 to 15169. [2022-11-16 12:03:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15169 states, 15168 states have (on average 1.3897020042194093) internal successors, (21079), 15168 states have internal predecessors, (21079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15169 states to 15169 states and 21079 transitions. [2022-11-16 12:03:49,822 INFO L78 Accepts]: Start accepts. Automaton has 15169 states and 21079 transitions. Word has length 81 [2022-11-16 12:03:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:49,823 INFO L495 AbstractCegarLoop]: Abstraction has 15169 states and 21079 transitions. [2022-11-16 12:03:49,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 15169 states and 21079 transitions. [2022-11-16 12:03:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:03:49,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:49,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:03:49,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 58995152, now seen corresponding path program 1 times [2022-11-16 12:03:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889275236] [2022-11-16 12:03:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:50,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889275236] [2022-11-16 12:03:50,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889275236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:50,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:50,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738856313] [2022-11-16 12:03:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:50,076 INFO L87 Difference]: Start difference. First operand 15169 states and 21079 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:52,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:52,875 INFO L93 Difference]: Finished difference Result 39786 states and 56013 transitions. [2022-11-16 12:03:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 12:03:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:52,930 INFO L225 Difference]: With dead ends: 39786 [2022-11-16 12:03:52,931 INFO L226 Difference]: Without dead ends: 25296 [2022-11-16 12:03:52,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:52,947 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 4042 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:52,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 919 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:03:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25296 states. [2022-11-16 12:03:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25296 to 25294. [2022-11-16 12:03:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25294 states, 25293 states have (on average 1.4033131696516823) internal successors, (35494), 25293 states have internal predecessors, (35494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25294 states to 25294 states and 35494 transitions. [2022-11-16 12:03:54,991 INFO L78 Accepts]: Start accepts. Automaton has 25294 states and 35494 transitions. Word has length 82 [2022-11-16 12:03:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:54,991 INFO L495 AbstractCegarLoop]: Abstraction has 25294 states and 35494 transitions. [2022-11-16 12:03:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 25294 states and 35494 transitions. [2022-11-16 12:03:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 12:03:55,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:55,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:55,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:03:55,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash 261572518, now seen corresponding path program 1 times [2022-11-16 12:03:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:55,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66128386] [2022-11-16 12:03:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:03:55,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:55,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66128386] [2022-11-16 12:03:55,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66128386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:55,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:55,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515658463] [2022-11-16 12:03:55,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:55,160 INFO L87 Difference]: Start difference. First operand 25294 states and 35494 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:57,761 INFO L93 Difference]: Finished difference Result 56418 states and 79527 transitions. [2022-11-16 12:03:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-16 12:03:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:57,831 INFO L225 Difference]: With dead ends: 56418 [2022-11-16 12:03:57,831 INFO L226 Difference]: Without dead ends: 35280 [2022-11-16 12:03:57,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:57,854 INFO L413 NwaCegarLoop]: 1468 mSDtfsCounter, 891 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:57,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 2315 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35280 states. [2022-11-16 12:04:01,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35280 to 35170. [2022-11-16 12:04:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35170 states, 35169 states have (on average 1.3829793283857943) internal successors, (48638), 35169 states have internal predecessors, (48638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35170 states to 35170 states and 48638 transitions. [2022-11-16 12:04:01,363 INFO L78 Accepts]: Start accepts. Automaton has 35170 states and 48638 transitions. Word has length 83 [2022-11-16 12:04:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:01,363 INFO L495 AbstractCegarLoop]: Abstraction has 35170 states and 48638 transitions. [2022-11-16 12:04:01,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 35170 states and 48638 transitions. [2022-11-16 12:04:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:04:01,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:01,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:04:01,391 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 909961113, now seen corresponding path program 1 times [2022-11-16 12:04:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011725470] [2022-11-16 12:04:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011725470] [2022-11-16 12:04:01,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011725470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:01,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:01,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:01,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99296131] [2022-11-16 12:04:01,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:01,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:01,667 INFO L87 Difference]: Start difference. First operand 35170 states and 48638 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:14,613 INFO L93 Difference]: Finished difference Result 126396 states and 176739 transitions. [2022-11-16 12:04:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:04:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-16 12:04:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:14,873 INFO L225 Difference]: With dead ends: 126396 [2022-11-16 12:04:14,873 INFO L226 Difference]: Without dead ends: 109221 [2022-11-16 12:04:14,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:04:14,910 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 6406 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6406 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:14,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6406 Valid, 1842 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:04:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109221 states. [2022-11-16 12:04:20,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109221 to 35226. [2022-11-16 12:04:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35226 states, 35225 states have (on average 1.3828246983676367) internal successors, (48710), 35225 states have internal predecessors, (48710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35226 states to 35226 states and 48710 transitions. [2022-11-16 12:04:20,207 INFO L78 Accepts]: Start accepts. Automaton has 35226 states and 48710 transitions. Word has length 84 [2022-11-16 12:04:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:20,207 INFO L495 AbstractCegarLoop]: Abstraction has 35226 states and 48710 transitions. [2022-11-16 12:04:20,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 35226 states and 48710 transitions. [2022-11-16 12:04:20,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:04:20,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:20,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:20,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:04:20,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1929393516, now seen corresponding path program 1 times [2022-11-16 12:04:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:20,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811977912] [2022-11-16 12:04:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:20,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811977912] [2022-11-16 12:04:20,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811977912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:20,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:20,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065284645] [2022-11-16 12:04:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:20,475 INFO L87 Difference]: Start difference. First operand 35226 states and 48710 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)