./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS --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 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 --- 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-4e7fbc6 [2022-11-23 03:06:56,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:06:56,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:06:56,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:06:56,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:06:56,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:06:56,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:06:56,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:06:56,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:06:56,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:06:56,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:06:56,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:06:56,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:06:56,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:06:56,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:06:56,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:06:56,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:06:56,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:06:56,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:06:56,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:06:56,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:06:56,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:06:56,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:06:56,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:06:56,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:06:56,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:06:56,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:06:56,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:06:56,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:06:56,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:06:56,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:06:56,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:06:56,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:06:56,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:06:56,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:06:56,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:06:56,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:06:56,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:06:56,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:06:56,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:06:56,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:06:56,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:06:56,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:06:56,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:06:56,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:06:56,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:06:56,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:06:56,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:06:56,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:06:56,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:06:56,672 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:06:56,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:06:56,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:06:56,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:06:56,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:06:56,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:06:56,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:06:56,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:06:56,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:06:56,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:06:56,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:06:56,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:06:56,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:06:56,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:06:56,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:06:56,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:06:56,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:06:56,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:06:56,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:06:56,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:06:56,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:06:56,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:06:56,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:06:56,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:06:56,681 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:06:56,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:06:56,681 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 [2022-11-23 03:06:56,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:06:56,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:06:56,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:06:56,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:06:56,995 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:06:56,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-23 03:06:59,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:07:00,490 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:07:00,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-23 03:07:00,528 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/data/460d1d924/33392bc53ce74ae18aa6c585d1708f7e/FLAG7184bfb7d [2022-11-23 03:07:00,548 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/data/460d1d924/33392bc53ce74ae18aa6c585d1708f7e [2022-11-23 03:07:00,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:07:00,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:07:00,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:07:00,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:07:00,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:07:00,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:00" (1/1) ... [2022-11-23 03:07:00,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d4003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:00, skipping insertion in model container [2022-11-23 03:07:00,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:07:00" (1/1) ... [2022-11-23 03:07:00,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:07:00,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:07:01,086 WARN L237 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2022-11-23 03:07:01,151 WARN L237 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2022-11-23 03:07:02,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:07:02,189 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:07:02,213 WARN L237 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2022-11-23 03:07:02,226 WARN L237 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_2ff41fbb-fa10-4bd4-b751-c935eb769c38/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2022-11-23 03:07:02,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:07:02,790 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:07:02,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02 WrapperNode [2022-11-23 03:07:02,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:07:02,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:07:02,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:07:02,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:07:02,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:02,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,255 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4965 [2022-11-23 03:07:03,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:07:03,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:07:03,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:07:03,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:07:03,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,585 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:07:03,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:07:03,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:07:03,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:07:03,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (1/1) ... [2022-11-23 03:07:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:07:03,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:07:03,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:07:03,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:07:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:07:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:07:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:07:03,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:07:03,888 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:07:03,890 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:07:08,988 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:07:09,000 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:07:09,001 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:07:09,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:09 BoogieIcfgContainer [2022-11-23 03:07:09,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:07:09,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:07:09,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:07:09,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:07:09,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:07:00" (1/3) ... [2022-11-23 03:07:09,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2985f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:09, skipping insertion in model container [2022-11-23 03:07:09,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:07:02" (2/3) ... [2022-11-23 03:07:09,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2985f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:09, skipping insertion in model container [2022-11-23 03:07:09,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:09" (3/3) ... [2022-11-23 03:07:09,012 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-23 03:07:09,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:07:09,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 03:07:09,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:07:09,127 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;@2b07d3fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:07:09,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 03:07:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 03:07:09,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:09,148 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] [2022-11-23 03:07:09,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2022-11-23 03:07:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214097256] [2022-11-23 03:07:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:09,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214097256] [2022-11-23 03:07:09,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214097256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:09,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:09,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:07:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316654313] [2022-11-23 03:07:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:09,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:07:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:07:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:07:09,401 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:09,515 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2022-11-23 03:07:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:07:09,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-11-23 03:07:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:09,542 INFO L225 Difference]: With dead ends: 1724 [2022-11-23 03:07:09,542 INFO L226 Difference]: Without dead ends: 808 [2022-11-23 03:07:09,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:07:09,557 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:09,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-23 03:07:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-23 03:07:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2022-11-23 03:07:09,647 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2022-11-23 03:07:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:09,648 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2022-11-23 03:07:09,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2022-11-23 03:07:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 03:07:09,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:09,650 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] [2022-11-23 03:07:09,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:07:09,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:09,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2022-11-23 03:07:09,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:09,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575430431] [2022-11-23 03:07:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:09,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:09,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575430431] [2022-11-23 03:07:09,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575430431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:09,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:09,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884676338] [2022-11-23 03:07:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:09,877 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:10,066 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2022-11-23 03:07:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:10,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-11-23 03:07:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:10,072 INFO L225 Difference]: With dead ends: 844 [2022-11-23 03:07:10,072 INFO L226 Difference]: Without dead ends: 808 [2022-11-23 03:07:10,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:07:10,077 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 3 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:10,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6081 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-23 03:07:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-23 03:07:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2022-11-23 03:07:10,100 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2022-11-23 03:07:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:10,101 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2022-11-23 03:07:10,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2022-11-23 03:07:10,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 03:07:10,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:10,102 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] [2022-11-23 03:07:10,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:07:10,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2022-11-23 03:07:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:10,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064788134] [2022-11-23 03:07:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064788134] [2022-11-23 03:07:10,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064788134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:10,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:10,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505609749] [2022-11-23 03:07:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:10,220 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:10,369 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2022-11-23 03:07:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:07:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-11-23 03:07:10,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:10,378 INFO L225 Difference]: With dead ends: 1000 [2022-11-23 03:07:10,378 INFO L226 Difference]: Without dead ends: 968 [2022-11-23 03:07:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:07:10,389 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:10,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:07:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-23 03:07:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2022-11-23 03:07:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2022-11-23 03:07:10,423 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2022-11-23 03:07:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:10,423 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2022-11-23 03:07:10,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2022-11-23 03:07:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:07:10,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:10,432 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] [2022-11-23 03:07:10,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:07:10,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:10,434 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2022-11-23 03:07:10,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:10,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796522153] [2022-11-23 03:07:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:10,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796522153] [2022-11-23 03:07:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796522153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:10,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218234764] [2022-11-23 03:07:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:10,587 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:10,640 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2022-11-23 03:07:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-23 03:07:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:10,650 INFO L225 Difference]: With dead ends: 951 [2022-11-23 03:07:10,650 INFO L226 Difference]: Without dead ends: 889 [2022-11-23 03:07:10,654 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 [2022-11-23 03:07:10,662 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:10,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-23 03:07:10,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2022-11-23 03:07:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2022-11-23 03:07:10,690 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2022-11-23 03:07:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:10,691 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2022-11-23 03:07:10,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2022-11-23 03:07:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 03:07:10,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:10,696 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] [2022-11-23 03:07:10,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:07:10,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2022-11-23 03:07:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:10,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442558448] [2022-11-23 03:07:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:10,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442558448] [2022-11-23 03:07:10,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442558448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:10,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:10,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031808672] [2022-11-23 03:07:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:10,927 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:11,018 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2022-11-23 03:07:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-23 03:07:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:11,023 INFO L225 Difference]: With dead ends: 996 [2022-11-23 03:07:11,023 INFO L226 Difference]: Without dead ends: 887 [2022-11-23 03:07:11,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:07:11,024 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2990 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:11,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-23 03:07:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2022-11-23 03:07:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2022-11-23 03:07:11,050 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2022-11-23 03:07:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:11,051 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2022-11-23 03:07:11,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2022-11-23 03:07:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 03:07:11,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:11,052 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] [2022-11-23 03:07:11,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:07:11,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2022-11-23 03:07:11,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:11,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878731891] [2022-11-23 03:07:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:11,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878731891] [2022-11-23 03:07:11,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878731891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:11,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:11,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:07:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235425309] [2022-11-23 03:07:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:07:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:07:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:07:11,304 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:11,519 INFO L93 Difference]: Finished difference Result 990 states and 1780 transitions. [2022-11-23 03:07:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:07:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-23 03:07:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:11,524 INFO L225 Difference]: With dead ends: 990 [2022-11-23 03:07:11,524 INFO L226 Difference]: Without dead ends: 988 [2022-11-23 03:07:11,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:07:11,526 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 295 mSDsluCounter, 8894 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:11,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 10442 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-11-23 03:07:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 891. [2022-11-23 03:07:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2022-11-23 03:07:11,556 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2022-11-23 03:07:11,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:11,557 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2022-11-23 03:07:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2022-11-23 03:07:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 03:07:11,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:11,558 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] [2022-11-23 03:07:11,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:07:11,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2022-11-23 03:07:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:11,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81292387] [2022-11-23 03:07:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:11,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81292387] [2022-11-23 03:07:11,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81292387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:11,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:11,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762454085] [2022-11-23 03:07:11,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:11,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:11,614 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:11,665 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2022-11-23 03:07:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-11-23 03:07:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:11,670 INFO L225 Difference]: With dead ends: 1105 [2022-11-23 03:07:11,670 INFO L226 Difference]: Without dead ends: 990 [2022-11-23 03:07:11,671 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 [2022-11-23 03:07:11,672 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:11,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-23 03:07:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2022-11-23 03:07:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2022-11-23 03:07:11,715 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2022-11-23 03:07:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:11,717 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2022-11-23 03:07:11,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2022-11-23 03:07:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 03:07:11,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:11,720 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] [2022-11-23 03:07:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:07:11,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2022-11-23 03:07:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:11,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933264421] [2022-11-23 03:07:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:11,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933264421] [2022-11-23 03:07:11,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933264421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:11,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:11,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396718850] [2022-11-23 03:07:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:11,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:11,833 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:11,905 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2022-11-23 03:07:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-11-23 03:07:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:11,911 INFO L225 Difference]: With dead ends: 1380 [2022-11-23 03:07:11,911 INFO L226 Difference]: Without dead ends: 1168 [2022-11-23 03:07:11,912 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 [2022-11-23 03:07:11,913 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:11,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-23 03:07:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2022-11-23 03:07:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2022-11-23 03:07:11,981 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2022-11-23 03:07:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:11,982 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2022-11-23 03:07:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2022-11-23 03:07:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-23 03:07:11,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:11,983 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] [2022-11-23 03:07:11,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:07:11,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2022-11-23 03:07:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:11,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480045400] [2022-11-23 03:07:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:12,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480045400] [2022-11-23 03:07:12,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480045400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:12,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:12,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333093543] [2022-11-23 03:07:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:12,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:12,027 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:12,127 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2022-11-23 03:07:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-23 03:07:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:12,135 INFO L225 Difference]: With dead ends: 1589 [2022-11-23 03:07:12,135 INFO L226 Difference]: Without dead ends: 1354 [2022-11-23 03:07:12,136 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 [2022-11-23 03:07:12,138 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:12,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-11-23 03:07:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2022-11-23 03:07:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2022-11-23 03:07:12,240 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2022-11-23 03:07:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:12,240 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2022-11-23 03:07:12,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2022-11-23 03:07:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 03:07:12,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:12,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:07:12,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:12,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2022-11-23 03:07:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911865665] [2022-11-23 03:07:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:07:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:12,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911865665] [2022-11-23 03:07:12,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911865665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:12,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:12,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926917307] [2022-11-23 03:07:12,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:12,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:12,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:12,392 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:12,736 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2022-11-23 03:07:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 54 [2022-11-23 03:07:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:12,747 INFO L225 Difference]: With dead ends: 3208 [2022-11-23 03:07:12,747 INFO L226 Difference]: Without dead ends: 2634 [2022-11-23 03:07:12,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:07:12,749 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3058 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:12,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-23 03:07:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2022-11-23 03:07:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2022-11-23 03:07:13,011 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2022-11-23 03:07:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:13,012 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2022-11-23 03:07:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2022-11-23 03:07:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 03:07:13,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:13,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:13,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:07:13,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2022-11-23 03:07:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:13,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429588111] [2022-11-23 03:07:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:07:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:13,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429588111] [2022-11-23 03:07:13,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429588111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:13,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:13,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:13,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89734512] [2022-11-23 03:07:13,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:13,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:13,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:13,157 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:13,664 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2022-11-23 03:07:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2022-11-23 03:07:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:13,675 INFO L225 Difference]: With dead ends: 3780 [2022-11-23 03:07:13,676 INFO L226 Difference]: Without dead ends: 3206 [2022-11-23 03:07:13,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:07:13,678 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3050 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:13,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:07:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-11-23 03:07:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2022-11-23 03:07:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2022-11-23 03:07:14,037 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2022-11-23 03:07:14,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:14,037 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2022-11-23 03:07:14,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2022-11-23 03:07:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 03:07:14,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:14,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:14,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:07:14,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2022-11-23 03:07:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:14,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358677158] [2022-11-23 03:07:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:14,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:14,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358677158] [2022-11-23 03:07:14,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358677158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:14,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:14,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759132615] [2022-11-23 03:07:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:14,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:14,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:14,125 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:14,333 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2022-11-23 03:07:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-23 03:07:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:14,341 INFO L225 Difference]: With dead ends: 4260 [2022-11-23 03:07:14,342 INFO L226 Difference]: Without dead ends: 2254 [2022-11-23 03:07:14,345 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 [2022-11-23 03:07:14,346 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:14,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-23 03:07:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2022-11-23 03:07:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2022-11-23 03:07:14,540 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2022-11-23 03:07:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:14,541 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2022-11-23 03:07:14,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2022-11-23 03:07:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 03:07:14,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:14,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:14,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:07:14,543 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2022-11-23 03:07:14,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:14,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018919007] [2022-11-23 03:07:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:14,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:07:14,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:14,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018919007] [2022-11-23 03:07:14,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018919007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:14,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:14,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:07:14,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905154853] [2022-11-23 03:07:14,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:14,660 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:15,029 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2022-11-23 03:07:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 56 [2022-11-23 03:07:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:15,040 INFO L225 Difference]: With dead ends: 3508 [2022-11-23 03:07:15,040 INFO L226 Difference]: Without dead ends: 3090 [2022-11-23 03:07:15,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:07:15,042 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3052 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:15,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2022-11-23 03:07:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2022-11-23 03:07:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2022-11-23 03:07:15,290 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2022-11-23 03:07:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:15,291 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2022-11-23 03:07:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2022-11-23 03:07:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 03:07:15,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:15,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:07:15,293 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2022-11-23 03:07:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:15,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920646963] [2022-11-23 03:07:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:15,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:15,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920646963] [2022-11-23 03:07:15,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920646963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:15,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:15,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72596317] [2022-11-23 03:07:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:15,387 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:15,531 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2022-11-23 03:07:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-23 03:07:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:15,538 INFO L225 Difference]: With dead ends: 3608 [2022-11-23 03:07:15,539 INFO L226 Difference]: Without dead ends: 1734 [2022-11-23 03:07:15,541 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 [2022-11-23 03:07:15,542 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:15,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-11-23 03:07:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2022-11-23 03:07:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2022-11-23 03:07:15,678 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2022-11-23 03:07:15,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:15,678 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2022-11-23 03:07:15,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2022-11-23 03:07:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 03:07:15,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:15,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:07:15,680 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2022-11-23 03:07:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:15,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529391327] [2022-11-23 03:07:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:15,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:15,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529391327] [2022-11-23 03:07:15,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529391327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:15,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:15,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116769423] [2022-11-23 03:07:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:15,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:15,766 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:15,854 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2022-11-23 03:07:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-23 03:07:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:15,874 INFO L225 Difference]: With dead ends: 2204 [2022-11-23 03:07:15,881 INFO L226 Difference]: Without dead ends: 1266 [2022-11-23 03:07:15,882 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 [2022-11-23 03:07:15,883 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:15,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:07:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-23 03:07:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2022-11-23 03:07:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2022-11-23 03:07:16,011 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2022-11-23 03:07:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2022-11-23 03:07:16,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2022-11-23 03:07:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 03:07:16,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:16,015 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] [2022-11-23 03:07:16,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:07:16,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:16,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1918634021, now seen corresponding path program 1 times [2022-11-23 03:07:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300994708] [2022-11-23 03:07:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300994708] [2022-11-23 03:07:16,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300994708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:16,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:16,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:16,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087561284] [2022-11-23 03:07:16,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:16,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:07:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:07:16,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:07:16,179 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:24,865 INFO L93 Difference]: Finished difference Result 3519 states and 6419 transitions. [2022-11-23 03:07:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:07:24,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-23 03:07:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:24,872 INFO L225 Difference]: With dead ends: 3519 [2022-11-23 03:07:24,872 INFO L226 Difference]: Without dead ends: 2766 [2022-11-23 03:07:24,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:24,875 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 2325 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:24,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 783 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-23 03:07:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-11-23 03:07:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2022-11-23 03:07:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.5325615050651231) internal successors, (4236), 2765 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4236 transitions. [2022-11-23 03:07:24,996 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4236 transitions. Word has length 60 [2022-11-23 03:07:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:24,996 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4236 transitions. [2022-11-23 03:07:24,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4236 transitions. [2022-11-23 03:07:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 03:07:24,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:24,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:07:24,998 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2022-11-23 03:07:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:24,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363459176] [2022-11-23 03:07:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:26,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363459176] [2022-11-23 03:07:26,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363459176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:07:26,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166530336] [2022-11-23 03:07:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:26,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:07:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:07:26,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:07:26,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:07:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:26,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 03:07:27,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:07:27,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:07:27,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166530336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:27,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:07:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-23 03:07:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356472903] [2022-11-23 03:07:27,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 03:07:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 03:07:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:07:27,635 INFO L87 Difference]: Start difference. First operand 2766 states and 4236 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:34,851 INFO L93 Difference]: Finished difference Result 5594 states and 7908 transitions. [2022-11-23 03:07:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-23 03:07:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 61 [2022-11-23 03:07:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:34,861 INFO L225 Difference]: With dead ends: 5594 [2022-11-23 03:07:34,861 INFO L226 Difference]: Without dead ends: 5124 [2022-11-23 03:07:34,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=852, Invalid=3704, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 03:07:34,866 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17369 mSDsluCounter, 6356 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17369 SdHoareTripleChecker+Valid, 7859 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:34,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17369 Valid, 7859 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 03:07:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-11-23 03:07:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 4427. [2022-11-23 03:07:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4425 states have (on average 1.4196610169491526) internal successors, (6282), 4426 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 6282 transitions. [2022-11-23 03:07:35,356 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 6282 transitions. Word has length 61 [2022-11-23 03:07:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:35,356 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 6282 transitions. [2022-11-23 03:07:35,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 6282 transitions. [2022-11-23 03:07:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 03:07:35,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:35,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:35,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:35,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 03:07:35,564 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:35,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2022-11-23 03:07:35,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:35,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481817323] [2022-11-23 03:07:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:36,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:36,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481817323] [2022-11-23 03:07:36,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481817323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:07:36,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523653300] [2022-11-23 03:07:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:36,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:07:36,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:07:36,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:07:36,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:07:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:36,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 03:07:36,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:37,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:38,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523653300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:38,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:07:38,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2022-11-23 03:07:38,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677162781] [2022-11-23 03:07:38,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:38,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 03:07:38,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 03:07:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2022-11-23 03:07:38,441 INFO L87 Difference]: Start difference. First operand 4427 states and 6282 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:07:43,862 INFO L93 Difference]: Finished difference Result 9966 states and 13117 transitions. [2022-11-23 03:07:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 03:07:43,862 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2022-11-23 03:07:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:07:43,875 INFO L225 Difference]: With dead ends: 9966 [2022-11-23 03:07:43,875 INFO L226 Difference]: Without dead ends: 7989 [2022-11-23 03:07:43,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 03:07:43,880 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 20357 mSDsluCounter, 7996 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20357 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:07:43,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20357 Valid, 9498 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 03:07:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7989 states. [2022-11-23 03:07:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7989 to 6031. [2022-11-23 03:07:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6029 states have (on average 1.3655664289268536) internal successors, (8233), 6030 states have internal predecessors, (8233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 8233 transitions. [2022-11-23 03:07:44,652 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 8233 transitions. Word has length 62 [2022-11-23 03:07:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:07:44,653 INFO L495 AbstractCegarLoop]: Abstraction has 6031 states and 8233 transitions. [2022-11-23 03:07:44,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 8233 transitions. [2022-11-23 03:07:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 03:07:44,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:07:44,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:44,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 03:07:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 03:07:44,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:07:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2022-11-23 03:07:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:07:44,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839443066] [2022-11-23 03:07:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:07:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:07:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839443066] [2022-11-23 03:07:45,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839443066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:07:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688517419] [2022-11-23 03:07:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:07:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:07:45,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:07:45,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:07:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:45,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 03:07:45,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:49,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:55,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688517419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:55,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:07:55,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 19] total 43 [2022-11-23 03:07:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438878897] [2022-11-23 03:07:55,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:55,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 03:07:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:07:55,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 03:07:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 03:07:55,700 INFO L87 Difference]: Start difference. First operand 6031 states and 8233 transitions. Second operand has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:26,873 INFO L93 Difference]: Finished difference Result 11814 states and 15211 transitions. [2022-11-23 03:08:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-11-23 03:08:26,874 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2022-11-23 03:08:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:26,889 INFO L225 Difference]: With dead ends: 11814 [2022-11-23 03:08:26,890 INFO L226 Difference]: Without dead ends: 8237 [2022-11-23 03:08:26,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9523 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=4613, Invalid=21147, Unknown=0, NotChecked=0, Total=25760 [2022-11-23 03:08:26,900 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 19960 mSDsluCounter, 14580 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19960 SdHoareTripleChecker+Valid, 16145 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:26,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19960 Valid, 16145 Invalid, 1408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 03:08:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2022-11-23 03:08:27,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 5412. [2022-11-23 03:08:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5410 states have (on average 1.376894639556377) internal successors, (7449), 5411 states have internal predecessors, (7449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 7449 transitions. [2022-11-23 03:08:27,863 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 7449 transitions. Word has length 62 [2022-11-23 03:08:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:27,864 INFO L495 AbstractCegarLoop]: Abstraction has 5412 states and 7449 transitions. [2022-11-23 03:08:27,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 7449 transitions. [2022-11-23 03:08:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 03:08:27,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:27,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:27,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:28,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:28,071 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 936502703, now seen corresponding path program 1 times [2022-11-23 03:08:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:28,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087244312] [2022-11-23 03:08:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:29,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087244312] [2022-11-23 03:08:29,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087244312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400939707] [2022-11-23 03:08:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:29,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:29,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:29,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:08:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:29,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 03:08:29,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:31,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:32,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400939707] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:32,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:08:32,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2022-11-23 03:08:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911394963] [2022-11-23 03:08:32,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 03:08:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:08:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 03:08:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 03:08:32,646 INFO L87 Difference]: Start difference. First operand 5412 states and 7449 transitions. Second operand has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:08:46,803 INFO L93 Difference]: Finished difference Result 12781 states and 16585 transitions. [2022-11-23 03:08:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-23 03:08:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 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 64 [2022-11-23 03:08:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:08:46,822 INFO L225 Difference]: With dead ends: 12781 [2022-11-23 03:08:46,822 INFO L226 Difference]: Without dead ends: 11349 [2022-11-23 03:08:46,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2719 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1903, Invalid=8399, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 03:08:46,829 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 18149 mSDsluCounter, 30510 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18149 SdHoareTripleChecker+Valid, 32036 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:08:46,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18149 Valid, 32036 Invalid, 1633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 03:08:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2022-11-23 03:08:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 5301. [2022-11-23 03:08:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5299 states have (on average 1.380637856199283) internal successors, (7316), 5300 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 7316 transitions. [2022-11-23 03:08:47,891 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 7316 transitions. Word has length 64 [2022-11-23 03:08:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:08:47,891 INFO L495 AbstractCegarLoop]: Abstraction has 5301 states and 7316 transitions. [2022-11-23 03:08:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 7316 transitions. [2022-11-23 03:08:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 03:08:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:08:47,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:48,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-23 03:08:48,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:08:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash 272942991, now seen corresponding path program 1 times [2022-11-23 03:08:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:08:48,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349554156] [2022-11-23 03:08:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:48,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:08:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:49,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:08:49,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349554156] [2022-11-23 03:08:49,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349554156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:08:49,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997865721] [2022-11-23 03:08:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:08:49,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:08:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:08:49,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:08:49,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:08:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:08:49,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 03:08:49,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:52,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:09:13,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997865721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:13,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:09:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 57 [2022-11-23 03:09:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90976194] [2022-11-23 03:09:13,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 03:09:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:09:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 03:09:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 03:09:13,596 INFO L87 Difference]: Start difference. First operand 5301 states and 7316 transitions. Second operand has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:11:18,307 INFO L93 Difference]: Finished difference Result 19374 states and 24736 transitions. [2022-11-23 03:11:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-23 03:11:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 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 103 [2022-11-23 03:11:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:11:18,337 INFO L225 Difference]: With dead ends: 19374 [2022-11-23 03:11:18,338 INFO L226 Difference]: Without dead ends: 17468 [2022-11-23 03:11:18,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 156 SyntacticMatches, 10 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35824 ImplicationChecksByTransitivity, 113.7s TimeCoverageRelationStatistics Valid=11577, Invalid=88595, Unknown=0, NotChecked=0, Total=100172 [2022-11-23 03:11:18,354 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 34434 mSDsluCounter, 21859 mSDsCounter, 0 mSdLazyCounter, 3819 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34434 SdHoareTripleChecker+Valid, 23463 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:11:18,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34434 Valid, 23463 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [443 Valid, 3819 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-23 03:11:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2022-11-23 03:11:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 9243. [2022-11-23 03:11:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9241 states have (on average 1.3116545828373554) internal successors, (12121), 9242 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 12121 transitions. [2022-11-23 03:11:21,510 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 12121 transitions. Word has length 103 [2022-11-23 03:11:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:11:21,510 INFO L495 AbstractCegarLoop]: Abstraction has 9243 states and 12121 transitions. [2022-11-23 03:11:21,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 12121 transitions. [2022-11-23 03:11:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 03:11:21,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:11:21,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:21,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:11:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:11:21,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:11:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -897532676, now seen corresponding path program 1 times [2022-11-23 03:11:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:21,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444798153] [2022-11-23 03:11:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:23,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444798153] [2022-11-23 03:11:23,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444798153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:11:23,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969745222] [2022-11-23 03:11:23,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:23,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:11:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:11:23,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:11:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:11:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:23,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 03:11:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:11:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 03:11:26,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:11:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 03:11:49,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969745222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:11:49,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:11:49,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 25] total 63 [2022-11-23 03:11:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031037261] [2022-11-23 03:11:49,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:11:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-23 03:11:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-23 03:11:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3577, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 03:11:49,554 INFO L87 Difference]: Start difference. First operand 9243 states and 12121 transitions. Second operand has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:54,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:13:54,620 INFO L93 Difference]: Finished difference Result 26516 states and 32827 transitions. [2022-11-23 03:13:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2022-11-23 03:13:54,621 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 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 104 [2022-11-23 03:13:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:13:54,642 INFO L225 Difference]: With dead ends: 26516 [2022-11-23 03:13:54,642 INFO L226 Difference]: Without dead ends: 21279 [2022-11-23 03:13:54,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59623 ImplicationChecksByTransitivity, 109.9s TimeCoverageRelationStatistics Valid=17035, Invalid=130037, Unknown=0, NotChecked=0, Total=147072 [2022-11-23 03:13:54,659 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 32878 mSDsluCounter, 42779 mSDsCounter, 0 mSdLazyCounter, 5865 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32878 SdHoareTripleChecker+Valid, 44466 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 5865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:13:54,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32878 Valid, 44466 Invalid, 6147 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [282 Valid, 5865 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 03:13:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21279 states. [2022-11-23 03:13:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21279 to 10637. [2022-11-23 03:13:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10637 states, 10635 states have (on average 1.2993888105312648) internal successors, (13819), 10636 states have internal predecessors, (13819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10637 states to 10637 states and 13819 transitions. [2022-11-23 03:13:59,657 INFO L78 Accepts]: Start accepts. Automaton has 10637 states and 13819 transitions. Word has length 104 [2022-11-23 03:13:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:13:59,658 INFO L495 AbstractCegarLoop]: Abstraction has 10637 states and 13819 transitions. [2022-11-23 03:13:59,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10637 states and 13819 transitions. [2022-11-23 03:13:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 03:13:59,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:13:59,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:13:59,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:13:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:13:59,867 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:13:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:13:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2047223651, now seen corresponding path program 1 times [2022-11-23 03:13:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:13:59,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781319288] [2022-11-23 03:13:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:13:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:13:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:14:02,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:14:02,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781319288] [2022-11-23 03:14:02,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781319288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:14:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749395999] [2022-11-23 03:14:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:14:02,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:14:02,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:14:02,338 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:14:02,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:14:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:14:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 03:14:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:14:04,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:14:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:14:07,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749395999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:07,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:14:07,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 52 [2022-11-23 03:14:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959341889] [2022-11-23 03:14:07,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:07,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-23 03:14:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:14:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-23 03:14:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 03:14:07,373 INFO L87 Difference]: Start difference. First operand 10637 states and 13819 transitions. Second operand has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:15:20,120 INFO L93 Difference]: Finished difference Result 30256 states and 37074 transitions. [2022-11-23 03:15:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-11-23 03:15:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 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 105 [2022-11-23 03:15:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:15:20,146 INFO L225 Difference]: With dead ends: 30256 [2022-11-23 03:15:20,146 INFO L226 Difference]: Without dead ends: 27123 [2022-11-23 03:15:20,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18966 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=7474, Invalid=45656, Unknown=0, NotChecked=0, Total=53130 [2022-11-23 03:15:20,154 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 27269 mSDsluCounter, 20568 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27269 SdHoareTripleChecker+Valid, 22122 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:15:20,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27269 Valid, 22122 Invalid, 3108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 03:15:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27123 states. [2022-11-23 03:15:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27123 to 14632. [2022-11-23 03:15:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14632 states, 14630 states have (on average 1.279494190020506) internal successors, (18719), 14631 states have internal predecessors, (18719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14632 states to 14632 states and 18719 transitions. [2022-11-23 03:15:28,467 INFO L78 Accepts]: Start accepts. Automaton has 14632 states and 18719 transitions. Word has length 105 [2022-11-23 03:15:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:15:28,468 INFO L495 AbstractCegarLoop]: Abstraction has 14632 states and 18719 transitions. [2022-11-23 03:15:28,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 14632 states and 18719 transitions. [2022-11-23 03:15:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 03:15:28,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:15:28,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:15:28,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:15:28,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 03:15:28,676 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:15:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2022-11-23 03:15:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316996767] [2022-11-23 03:15:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:30,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:30,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316996767] [2022-11-23 03:15:30,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316996767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:15:30,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297512275] [2022-11-23 03:15:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:30,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:15:30,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:15:30,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:15:30,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff41fbb-fa10-4bd4-b751-c935eb769c38/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:15:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 03:15:30,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:15:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:33,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:15:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:42,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297512275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:15:42,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:15:42,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-23 03:15:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516252329] [2022-11-23 03:15:42,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:15:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-23 03:15:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-23 03:15:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3588, Unknown=0, NotChecked=0, Total=4032 [2022-11-23 03:15:42,222 INFO L87 Difference]: Start difference. First operand 14632 states and 18719 transitions. Second operand has 64 states, 64 states have (on average 4.453125) internal successors, (285), 64 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)