./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ --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 699c9c8063acd4bd53cef44ad5ead9f63bc9d124723ec1a4a717150e95ac10f2 --- 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-dbf71c6-m [2022-10-17 10:38:31,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:38:31,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:38:31,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:38:31,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:38:31,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:38:31,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:38:31,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:38:31,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:38:31,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:38:31,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:38:31,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:38:31,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:38:31,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:38:31,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:38:31,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:38:31,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:38:31,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:38:31,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:38:31,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:38:31,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:38:31,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:38:31,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:38:31,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:38:31,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:38:31,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:38:31,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:38:31,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:38:31,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:38:31,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:38:31,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:38:31,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:38:31,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:38:31,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:38:31,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:38:31,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:38:31,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:38:31,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:38:31,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:38:31,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:38:31,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:38:31,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:38:31,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:38:31,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:38:31,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:38:31,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:38:31,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:38:31,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:38:31,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:38:31,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:38:31,683 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:38:31,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:38:31,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:38:31,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:38:31,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:38:31,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:38:31,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:38:31,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:38:31,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:38:31,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:38:31,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:31,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:38:31,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:38:31,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:38:31,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:38:31,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:38:31,688 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:38:31,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:38:31,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:38:31,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 699c9c8063acd4bd53cef44ad5ead9f63bc9d124723ec1a4a717150e95ac10f2 [2022-10-17 10:38:32,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:32,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:32,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:32,066 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:32,068 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:32,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2022-10-17 10:38:32,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/data/f8c1c619c/7d2ba5ad702a416288746c2f2b5fbbdf/FLAG4d6acd200 [2022-10-17 10:38:32,876 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:32,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2022-10-17 10:38:32,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/data/f8c1c619c/7d2ba5ad702a416288746c2f2b5fbbdf/FLAG4d6acd200 [2022-10-17 10:38:32,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/data/f8c1c619c/7d2ba5ad702a416288746c2f2b5fbbdf [2022-10-17 10:38:32,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:32,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:32,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:32,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:32,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:32,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:32" (1/1) ... [2022-10-17 10:38:32,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128bec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:32, skipping insertion in model container [2022-10-17 10:38:32,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:32" (1/1) ... [2022-10-17 10:38:32,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:33,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:33,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2022-10-17 10:38:33,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:33,862 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:33,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2022-10-17 10:38:34,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:34,153 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:34,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34 WrapperNode [2022-10-17 10:38:34,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:34,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:34,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:34,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:34,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,356 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-10-17 10:38:34,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:34,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:34,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:34,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:34,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:34,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:34,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:34,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:34,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (1/1) ... [2022-10-17 10:38:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:34,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:34,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:38:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:38:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:34,745 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:34,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:37,185 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:37,209 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:37,209 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:38:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:37 BoogieIcfgContainer [2022-10-17 10:38:37,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:37,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:38:37,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:38:37,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:38:37,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:38:32" (1/3) ... [2022-10-17 10:38:37,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e00cad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:37, skipping insertion in model container [2022-10-17 10:38:37,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:34" (2/3) ... [2022-10-17 10:38:37,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e00cad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:37, skipping insertion in model container [2022-10-17 10:38:37,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:37" (3/3) ... [2022-10-17 10:38:37,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label33.c [2022-10-17 10:38:37,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:38:37,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:38:37,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:37,385 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;@3c1bb9ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:37,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:38:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:38:37,421 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:37,422 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] [2022-10-17 10:38:37,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-10-17 10:38:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:37,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047469787] [2022-10-17 10:38:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:37,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047469787] [2022-10-17 10:38:37,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047469787] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:37,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:37,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:37,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529550312] [2022-10-17 10:38:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:38:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:38,026 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:41,746 INFO L93 Difference]: Finished difference Result 1456 states and 2764 transitions. [2022-10-17 10:38:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:41,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-10-17 10:38:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:41,789 INFO L225 Difference]: With dead ends: 1456 [2022-10-17 10:38:41,789 INFO L226 Difference]: Without dead ends: 991 [2022-10-17 10:38:41,798 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 [2022-10-17 10:38:41,801 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1095 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:41,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 96 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-17 10:38:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-10-17 10:38:41,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-10-17 10:38:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.497979797979798) internal successors, (1483), 990 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1483 transitions. [2022-10-17 10:38:41,907 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1483 transitions. Word has length 27 [2022-10-17 10:38:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:41,907 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1483 transitions. [2022-10-17 10:38:41,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1483 transitions. [2022-10-17 10:38:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-10-17 10:38:41,923 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:41,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:41,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:38:41,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1421584585, now seen corresponding path program 1 times [2022-10-17 10:38:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:41,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378772154] [2022-10-17 10:38:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:42,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378772154] [2022-10-17 10:38:42,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378772154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:42,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:42,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661581934] [2022-10-17 10:38:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:42,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:42,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:42,464 INFO L87 Difference]: Start difference. First operand 991 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:44,182 INFO L93 Difference]: Finished difference Result 1980 states and 3168 transitions. [2022-10-17 10:38:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2022-10-17 10:38:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:44,193 INFO L225 Difference]: With dead ends: 1980 [2022-10-17 10:38:44,193 INFO L226 Difference]: Without dead ends: 1320 [2022-10-17 10:38:44,200 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 [2022-10-17 10:38:44,203 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 279 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:44,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 539 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:38:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-10-17 10:38:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-10-17 10:38:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.423805913570887) internal successors, (1878), 1319 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1878 transitions. [2022-10-17 10:38:44,261 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1878 transitions. Word has length 217 [2022-10-17 10:38:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:44,263 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1878 transitions. [2022-10-17 10:38:44,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1878 transitions. [2022-10-17 10:38:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-10-17 10:38:44,271 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:44,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-17 10:38:44,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:38:44,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1801200137, now seen corresponding path program 1 times [2022-10-17 10:38:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:44,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939945492] [2022-10-17 10:38:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-10-17 10:38:44,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939945492] [2022-10-17 10:38:44,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939945492] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:44,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:44,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:44,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722562828] [2022-10-17 10:38:44,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:44,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:44,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:44,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:44,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:44,568 INFO L87 Difference]: Start difference. First operand 1320 states and 1878 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:46,259 INFO L93 Difference]: Finished difference Result 3296 states and 4947 transitions. [2022-10-17 10:38:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:46,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 220 [2022-10-17 10:38:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:46,272 INFO L225 Difference]: With dead ends: 3296 [2022-10-17 10:38:46,272 INFO L226 Difference]: Without dead ends: 1978 [2022-10-17 10:38:46,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:46,276 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 339 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:46,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 156 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:38:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-10-17 10:38:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-10-17 10:38:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.1335356600910471) internal successors, (2241), 1977 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2241 transitions. [2022-10-17 10:38:46,336 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2241 transitions. Word has length 220 [2022-10-17 10:38:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:46,337 INFO L495 AbstractCegarLoop]: Abstraction has 1978 states and 2241 transitions. [2022-10-17 10:38:46,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2241 transitions. [2022-10-17 10:38:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-10-17 10:38:46,344 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:46,345 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:46,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:38:46,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:46,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1468102873, now seen corresponding path program 1 times [2022-10-17 10:38:46,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:46,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809920910] [2022-10-17 10:38:46,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-10-17 10:38:46,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:46,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809920910] [2022-10-17 10:38:46,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809920910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:46,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:46,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:46,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535699903] [2022-10-17 10:38:46,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:46,692 INFO L87 Difference]: Start difference. First operand 1978 states and 2241 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:47,919 INFO L93 Difference]: Finished difference Result 3954 states and 4508 transitions. [2022-10-17 10:38:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:47,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 346 [2022-10-17 10:38:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:47,932 INFO L225 Difference]: With dead ends: 3954 [2022-10-17 10:38:47,932 INFO L226 Difference]: Without dead ends: 2307 [2022-10-17 10:38:47,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:47,946 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 262 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:47,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 31 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:38:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2022-10-17 10:38:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2307. [2022-10-17 10:38:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.092801387684302) internal successors, (2520), 2306 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:48,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2520 transitions. [2022-10-17 10:38:48,022 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2520 transitions. Word has length 346 [2022-10-17 10:38:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:48,023 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 2520 transitions. [2022-10-17 10:38:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2520 transitions. [2022-10-17 10:38:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-10-17 10:38:48,039 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:48,040 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:38:48,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:48,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash -632973434, now seen corresponding path program 1 times [2022-10-17 10:38:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:48,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68364956] [2022-10-17 10:38:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-10-17 10:38:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:48,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68364956] [2022-10-17 10:38:48,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68364956] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:48,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:48,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758568527] [2022-10-17 10:38:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:48,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:48,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:48,910 INFO L87 Difference]: Start difference. First operand 2307 states and 2520 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:50,385 INFO L93 Difference]: Finished difference Result 5928 states and 6509 transitions. [2022-10-17 10:38:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 604 [2022-10-17 10:38:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:50,411 INFO L225 Difference]: With dead ends: 5928 [2022-10-17 10:38:50,411 INFO L226 Difference]: Without dead ends: 3952 [2022-10-17 10:38:50,415 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 [2022-10-17 10:38:50,417 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:50,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 428 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:38:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2022-10-17 10:38:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3623. [2022-10-17 10:38:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3622 states have (on average 1.0668139149641083) internal successors, (3864), 3622 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 3864 transitions. [2022-10-17 10:38:50,536 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 3864 transitions. Word has length 604 [2022-10-17 10:38:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:50,539 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 3864 transitions. [2022-10-17 10:38:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 3864 transitions. [2022-10-17 10:38:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-10-17 10:38:50,573 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:50,574 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:50,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:38:50,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash -272769792, now seen corresponding path program 1 times [2022-10-17 10:38:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:50,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061425855] [2022-10-17 10:38:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:50,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-10-17 10:38:51,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:51,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061425855] [2022-10-17 10:38:51,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061425855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:51,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:51,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711094369] [2022-10-17 10:38:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:51,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:51,479 INFO L87 Difference]: Start difference. First operand 3623 states and 3864 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:52,859 INFO L93 Difference]: Finished difference Result 8560 states and 9237 transitions. [2022-10-17 10:38:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:52,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 667 [2022-10-17 10:38:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:52,887 INFO L225 Difference]: With dead ends: 8560 [2022-10-17 10:38:52,887 INFO L226 Difference]: Without dead ends: 5268 [2022-10-17 10:38:52,893 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 [2022-10-17 10:38:52,894 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 171 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:52,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 432 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:38:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-10-17 10:38:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5268. [2022-10-17 10:38:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 1.0569584203531421) internal successors, (5567), 5267 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 5567 transitions. [2022-10-17 10:38:53,027 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 5567 transitions. Word has length 667 [2022-10-17 10:38:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:53,028 INFO L495 AbstractCegarLoop]: Abstraction has 5268 states and 5567 transitions. [2022-10-17 10:38:53,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 5567 transitions. [2022-10-17 10:38:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-10-17 10:38:53,038 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:53,039 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:38:53,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1124600290, now seen corresponding path program 1 times [2022-10-17 10:38:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:53,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353548400] [2022-10-17 10:38:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 262 proven. 443 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-10-17 10:38:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353548400] [2022-10-17 10:38:55,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353548400] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283657522] [2022-10-17 10:38:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:55,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:55,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:38:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:38:55,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-10-17 10:38:55,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:38:55,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283657522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:55,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:38:55,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-17 10:38:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518694103] [2022-10-17 10:38:55,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:38:55,778 INFO L87 Difference]: Start difference. First operand 5268 states and 5567 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:56,869 INFO L93 Difference]: Finished difference Result 10205 states and 10801 transitions. [2022-10-17 10:38:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:56,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 692 [2022-10-17 10:38:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:56,894 INFO L225 Difference]: With dead ends: 10205 [2022-10-17 10:38:56,895 INFO L226 Difference]: Without dead ends: 5268 [2022-10-17 10:38:56,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:38:56,901 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 258 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:56,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:38:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-10-17 10:38:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5268. [2022-10-17 10:38:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 1.0487943801025252) internal successors, (5524), 5267 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 5524 transitions. [2022-10-17 10:38:57,036 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 5524 transitions. Word has length 692 [2022-10-17 10:38:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:57,038 INFO L495 AbstractCegarLoop]: Abstraction has 5268 states and 5524 transitions. [2022-10-17 10:38:57,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:57,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 5524 transitions. [2022-10-17 10:38:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-10-17 10:38:57,050 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:57,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:57,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 10:38:57,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b307bf-e2d7-4186-b22c-621a890c53db/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:57,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash -266980119, now seen corresponding path program 1 times [2022-10-17 10:38:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:57,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527733756] [2022-10-17 10:38:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:57,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-10-17 10:38:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527733756] [2022-10-17 10:38:58,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527733756] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:58,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:58,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518613492] [2022-10-17 10:38:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:58,114 INFO L87 Difference]: Start difference. First operand 5268 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:59,510 INFO L93 Difference]: Finished difference Result 11850 states and 12502 transitions. [2022-10-17 10:38:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 812 [2022-10-17 10:38:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:59,554 INFO L225 Difference]: With dead ends: 11850 [2022-10-17 10:38:59,555 INFO L226 Difference]: Without dead ends: 6913 [2022-10-17 10:38:59,561 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 [2022-10-17 10:38:59,561 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 219 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:59,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 81 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:38:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6913 states. [2022-10-17 10:38:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6913 to 6584. [2022-10-17 10:38:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6584 states, 6583 states have (on average 1.0431414248822726) internal successors, (6867), 6583 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6584 states to 6584 states and 6867 transitions. [2022-10-17 10:38:59,721 INFO L78 Accepts]: Start accepts. Automaton has 6584 states and 6867 transitions. Word has length 812 [2022-10-17 10:38:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:59,722 INFO L495 AbstractCegarLoop]: Abstraction has 6584 states and 6867 transitions. [2022-10-17 10:38:59,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6584 states and 6867 transitions. [2022-10-17 10:38:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2022-10-17 10:38:59,742 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:59,743 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:38:59,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -242754722, now seen corresponding path program 1 times [2022-10-17 10:38:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557415992] [2022-10-17 10:38:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:39:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat