./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a7333ef933779062b72e4ec060ffb43da7d841912b7d7ec92a1b0251fa27640 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:47:31,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:47:31,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:47:31,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:47:31,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:47:31,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:47:31,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:47:31,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:47:31,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:47:31,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:47:31,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:47:31,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:47:31,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:47:31,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:47:31,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:47:31,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:47:31,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:47:31,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:47:31,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:47:31,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:47:31,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:47:31,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:47:31,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:47:31,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:47:31,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:47:31,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:47:31,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:47:31,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:47:31,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:47:31,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:47:31,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:47:31,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:47:31,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:47:31,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:47:31,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:47:31,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:47:31,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:47:31,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:47:31,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:47:31,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:47:31,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:47:31,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:47:31,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:47:31,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:47:31,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:47:31,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:47:31,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:47:31,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:47:31,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:47:31,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:47:31,351 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:47:31,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:47:31,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:47:31,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:47:31,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:47:31,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:47:31,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:47:31,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:47:31,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:47:31,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:47:31,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:47:31,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:31,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:47:31,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:47:31,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:47:31,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:47:31,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:47:31,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:47:31,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:47:31,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:47:31,358 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_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a7333ef933779062b72e4ec060ffb43da7d841912b7d7ec92a1b0251fa27640 [2022-11-16 11:47:31,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:47:31,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:47:31,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:47:31,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:47:31,732 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:47:31,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2022-11-16 11:47:31,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/data/0575b1528/e2d7d05ad12b4e2ab00c8ea9cface74c/FLAG04c3a3d92 [2022-11-16 11:47:32,945 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:47:32,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/sv-benchmarks/c/eca-rers2012/Problem19_label34.c [2022-11-16 11:47:32,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/data/0575b1528/e2d7d05ad12b4e2ab00c8ea9cface74c/FLAG04c3a3d92 [2022-11-16 11:47:33,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/data/0575b1528/e2d7d05ad12b4e2ab00c8ea9cface74c [2022-11-16 11:47:33,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:47:33,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:47:33,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:33,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:47:33,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:47:33,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:33" (1/1) ... [2022-11-16 11:47:33,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a83e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:33, skipping insertion in model container [2022-11-16 11:47:33,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:47:33" (1/1) ... [2022-11-16 11:47:33,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:47:33,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:47:34,050 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/sv-benchmarks/c/eca-rers2012/Problem19_label34.c[6640,6653] [2022-11-16 11:47:35,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:35,991 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:47:36,049 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/sv-benchmarks/c/eca-rers2012/Problem19_label34.c[6640,6653] [2022-11-16 11:47:37,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:47:37,269 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:47:37,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37 WrapperNode [2022-11-16 11:47:37,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:47:37,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:37,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:47:37,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:47:37,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:37,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:38,590 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-16 11:47:38,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:47:38,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:47:38,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:47:38,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:47:38,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:38,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:38,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:38,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:47:39,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:47:39,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:47:39,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:47:39,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (1/1) ... [2022-11-16 11:47:39,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:47:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:39,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:47:39,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:47:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:47:39,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:47:39,838 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:47:51,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:47:51,995 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:47:51,996 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:47:52,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:52 BoogieIcfgContainer [2022-11-16 11:47:52,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:47:52,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:47:52,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:47:52,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:47:52,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:47:33" (1/3) ... [2022-11-16 11:47:52,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff13be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:52, skipping insertion in model container [2022-11-16 11:47:52,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:47:37" (2/3) ... [2022-11-16 11:47:52,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff13be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:47:52, skipping insertion in model container [2022-11-16 11:47:52,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:47:52" (3/3) ... [2022-11-16 11:47:52,016 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label34.c [2022-11-16 11:47:52,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:47:52,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:47:52,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:47:52,206 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;@5b24eb9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:47:52,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:47:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 11:47:52,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:52,233 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] [2022-11-16 11:47:52,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2022-11-16 11:47:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:52,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108707546] [2022-11-16 11:47:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:53,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108707546] [2022-11-16 11:47:53,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108707546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:53,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:53,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:47:53,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610624169] [2022-11-16 11:47:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:47:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:47:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:47:53,069 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:12,584 INFO L93 Difference]: Finished difference Result 6288 states and 12045 transitions. [2022-11-16 11:48:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:48:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-11-16 11:48:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:12,630 INFO L225 Difference]: With dead ends: 6288 [2022-11-16 11:48:12,630 INFO L226 Difference]: Without dead ends: 4471 [2022-11-16 11:48:12,641 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 [2022-11-16 11:48:12,645 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 4584 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 3649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 10773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3649 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4584 Valid, 1011 Invalid, 10773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3649 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-11-16 11:48:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-11-16 11:48:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2022-11-16 11:48:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5665024630541873) internal successors, (6996), 4466 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6996 transitions. [2022-11-16 11:48:12,832 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6996 transitions. Word has length 50 [2022-11-16 11:48:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6996 transitions. [2022-11-16 11:48:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6996 transitions. [2022-11-16 11:48:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-16 11:48:12,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:12,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:12,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:48:12,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -60815551, now seen corresponding path program 1 times [2022-11-16 11:48:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980351678] [2022-11-16 11:48:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:48:14,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:14,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980351678] [2022-11-16 11:48:14,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980351678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:14,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:14,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:48:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666909419] [2022-11-16 11:48:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:48:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:48:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:14,667 INFO L87 Difference]: Start difference. First operand 4467 states and 6996 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:31,354 INFO L93 Difference]: Finished difference Result 11710 states and 20221 transitions. [2022-11-16 11:48:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:48:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 324 [2022-11-16 11:48:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:31,387 INFO L225 Difference]: With dead ends: 11710 [2022-11-16 11:48:31,388 INFO L226 Difference]: Without dead ends: 8610 [2022-11-16 11:48:31,392 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 [2022-11-16 11:48:31,394 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 10776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:31,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2155 Invalid, 10776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1331 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-11-16 11:48:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-11-16 11:48:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8596. [2022-11-16 11:48:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.348458406050029) internal successors, (11590), 8595 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11590 transitions. [2022-11-16 11:48:31,565 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11590 transitions. Word has length 324 [2022-11-16 11:48:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:31,566 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11590 transitions. [2022-11-16 11:48:31,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11590 transitions. [2022-11-16 11:48:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-16 11:48:31,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:31,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:48:31,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1954138457, now seen corresponding path program 1 times [2022-11-16 11:48:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:31,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104295382] [2022-11-16 11:48:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:48:32,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:32,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104295382] [2022-11-16 11:48:32,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104295382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:32,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:32,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:48:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877960674] [2022-11-16 11:48:32,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:32,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:48:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:48:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:32,483 INFO L87 Difference]: Start difference. First operand 8596 states and 11590 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:44,203 INFO L93 Difference]: Finished difference Result 14491 states and 20461 transitions. [2022-11-16 11:48:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:48:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 352 [2022-11-16 11:48:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:44,229 INFO L225 Difference]: With dead ends: 14491 [2022-11-16 11:48:44,229 INFO L226 Difference]: Without dead ends: 8596 [2022-11-16 11:48:44,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:44,236 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:44,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2115 Invalid, 7329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 7321 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-16 11:48:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-11-16 11:48:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8596. [2022-11-16 11:48:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.3469458987783596) internal successors, (11577), 8595 states have internal predecessors, (11577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11577 transitions. [2022-11-16 11:48:44,446 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11577 transitions. Word has length 352 [2022-11-16 11:48:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:44,447 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11577 transitions. [2022-11-16 11:48:44,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11577 transitions. [2022-11-16 11:48:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-16 11:48:44,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:44,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:44,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:48:44,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:44,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash -21632050, now seen corresponding path program 1 times [2022-11-16 11:48:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:44,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177762084] [2022-11-16 11:48:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 117 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177762084] [2022-11-16 11:48:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177762084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359211238] [2022-11-16 11:48:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:46,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:46,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:46,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:48:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:46,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:48:46,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:46,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:46,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359211238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:46,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:46,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:48:46,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963801599] [2022-11-16 11:48:46,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:48:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:48:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:48:46,824 INFO L87 Difference]: Start difference. First operand 8596 states and 11577 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:56,427 INFO L93 Difference]: Finished difference Result 19935 states and 28708 transitions. [2022-11-16 11:48:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:48:56,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 [2022-11-16 11:48:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:56,468 INFO L225 Difference]: With dead ends: 19935 [2022-11-16 11:48:56,469 INFO L226 Difference]: Without dead ends: 14071 [2022-11-16 11:48:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:48:56,478 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1730 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:56,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1508 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-16 11:48:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2022-11-16 11:48:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 14071. [2022-11-16 11:48:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14071 states, 14070 states have (on average 1.2694385216773276) internal successors, (17861), 14070 states have internal predecessors, (17861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14071 states to 14071 states and 17861 transitions. [2022-11-16 11:48:56,756 INFO L78 Accepts]: Start accepts. Automaton has 14071 states and 17861 transitions. Word has length 604 [2022-11-16 11:48:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:56,757 INFO L495 AbstractCegarLoop]: Abstraction has 14071 states and 17861 transitions. [2022-11-16 11:48:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 14071 states and 17861 transitions. [2022-11-16 11:48:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-16 11:48:56,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:56,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:56,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:56,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:56,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash 82559656, now seen corresponding path program 1 times [2022-11-16 11:48:56,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:56,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105320420] [2022-11-16 11:48:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-16 11:48:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105320420] [2022-11-16 11:48:57,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105320420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:57,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:57,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:48:57,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515701758] [2022-11-16 11:48:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:57,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:48:57,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:48:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:48:57,701 INFO L87 Difference]: Start difference. First operand 14071 states and 17861 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:08,938 INFO L93 Difference]: Finished difference Result 36504 states and 47794 transitions. [2022-11-16 11:49:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:08,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 605 [2022-11-16 11:49:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:08,996 INFO L225 Difference]: With dead ends: 36504 [2022-11-16 11:49:08,997 INFO L226 Difference]: Without dead ends: 25165 [2022-11-16 11:49:09,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:09,013 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2110 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:09,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 964 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-11-16 11:49:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25165 states. [2022-11-16 11:49:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25165 to 23797. [2022-11-16 11:49:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23796 states have (on average 1.2674399058665322) internal successors, (30160), 23796 states have internal predecessors, (30160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 30160 transitions. [2022-11-16 11:49:09,441 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 30160 transitions. Word has length 605 [2022-11-16 11:49:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:09,442 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 30160 transitions. [2022-11-16 11:49:09,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 30160 transitions. [2022-11-16 11:49:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-16 11:49:09,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:09,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:49:09,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1289471842, now seen corresponding path program 1 times [2022-11-16 11:49:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:09,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054604947] [2022-11-16 11:49:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 11:49:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054604947] [2022-11-16 11:49:10,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054604947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:10,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:10,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:49:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294213208] [2022-11-16 11:49:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:10,315 INFO L87 Difference]: Start difference. First operand 23797 states and 30160 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:20,000 INFO L93 Difference]: Finished difference Result 50347 states and 65462 transitions. [2022-11-16 11:49:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 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 622 [2022-11-16 11:49:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:20,064 INFO L225 Difference]: With dead ends: 50347 [2022-11-16 11:49:20,064 INFO L226 Difference]: Without dead ends: 29282 [2022-11-16 11:49:20,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:49:20,092 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1377 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:20,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 723 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-16 11:49:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-11-16 11:49:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 29267. [2022-11-16 11:49:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29266 states have (on average 1.2553133328777422) internal successors, (36738), 29266 states have internal predecessors, (36738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 36738 transitions. [2022-11-16 11:49:20,666 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 36738 transitions. Word has length 622 [2022-11-16 11:49:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:20,668 INFO L495 AbstractCegarLoop]: Abstraction has 29267 states and 36738 transitions. [2022-11-16 11:49:20,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 36738 transitions. [2022-11-16 11:49:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2022-11-16 11:49:20,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:20,688 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:20,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:49:20,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:20,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash 279482666, now seen corresponding path program 1 times [2022-11-16 11:49:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:20,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189962430] [2022-11-16 11:49:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-16 11:49:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:22,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189962430] [2022-11-16 11:49:22,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189962430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:22,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:22,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:49:22,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900551436] [2022-11-16 11:49:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:49:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:49:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:49:22,114 INFO L87 Difference]: Start difference. First operand 29267 states and 36738 transitions. Second operand has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:40,190 INFO L93 Difference]: Finished difference Result 98282 states and 126943 transitions. [2022-11-16 11:49:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:49:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 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 834 [2022-11-16 11:49:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:40,300 INFO L225 Difference]: With dead ends: 98282 [2022-11-16 11:49:40,301 INFO L226 Difference]: Without dead ends: 71747 [2022-11-16 11:49:40,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:49:40,330 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 3380 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8462 mSolverCounterSat, 3305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 11767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3305 IncrementalHoareTripleChecker+Valid, 8462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:40,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3380 Valid, 1082 Invalid, 11767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3305 Valid, 8462 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2022-11-16 11:49:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71747 states. [2022-11-16 11:49:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71747 to 68933. [2022-11-16 11:49:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68933 states, 68932 states have (on average 1.223118435559682) internal successors, (84312), 68932 states have internal predecessors, (84312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68933 states to 68933 states and 84312 transitions. [2022-11-16 11:49:41,777 INFO L78 Accepts]: Start accepts. Automaton has 68933 states and 84312 transitions. Word has length 834 [2022-11-16 11:49:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:41,778 INFO L495 AbstractCegarLoop]: Abstraction has 68933 states and 84312 transitions. [2022-11-16 11:49:41,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 68933 states and 84312 transitions. [2022-11-16 11:49:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2022-11-16 11:49:41,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:41,842 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:41,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:49:41,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 390301225, now seen corresponding path program 1 times [2022-11-16 11:49:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162001728] [2022-11-16 11:49:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 293 proven. 88 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-16 11:49:44,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:44,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162001728] [2022-11-16 11:49:44,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162001728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:49:44,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420523591] [2022-11-16 11:49:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:44,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:44,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:44,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:49:44,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:49:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:49:44,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-16 11:49:45,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420523591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:45,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:49:45,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:49:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497509623] [2022-11-16 11:49:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:45,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:49:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:49:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:49:45,287 INFO L87 Difference]: Start difference. First operand 68933 states and 84312 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:55,912 INFO L93 Difference]: Finished difference Result 176184 states and 219727 transitions. [2022-11-16 11:49:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:49:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 910 [2022-11-16 11:49:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:56,043 INFO L225 Difference]: With dead ends: 176184 [2022-11-16 11:49:56,044 INFO L226 Difference]: Without dead ends: 109983 [2022-11-16 11:49:56,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 910 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:49:56,082 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1577 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:56,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 953 Invalid, 6056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1082 Valid, 4974 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-16 11:49:56,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109983 states. [2022-11-16 11:49:58,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109983 to 107160. [2022-11-16 11:49:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107160 states, 107159 states have (on average 1.252027361210911) internal successors, (134166), 107159 states have internal predecessors, (134166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107160 states to 107160 states and 134166 transitions. [2022-11-16 11:49:58,773 INFO L78 Accepts]: Start accepts. Automaton has 107160 states and 134166 transitions. Word has length 910 [2022-11-16 11:49:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:58,774 INFO L495 AbstractCegarLoop]: Abstraction has 107160 states and 134166 transitions. [2022-11-16 11:49:58,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 107160 states and 134166 transitions. [2022-11-16 11:49:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2022-11-16 11:49:58,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:58,800 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:58,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:49:59,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1812576373, now seen corresponding path program 1 times [2022-11-16 11:49:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035353845] [2022-11-16 11:49:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-16 11:50:01,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:01,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035353845] [2022-11-16 11:50:01,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035353845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:01,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:01,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:50:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120634379] [2022-11-16 11:50:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:01,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:01,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:01,617 INFO L87 Difference]: Start difference. First operand 107160 states and 134166 transitions. Second operand has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:15,789 INFO L93 Difference]: Finished difference Result 219881 states and 274099 transitions. [2022-11-16 11:50:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:50:15,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 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 1087 [2022-11-16 11:50:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:15,927 INFO L225 Difference]: With dead ends: 219881 [2022-11-16 11:50:15,927 INFO L226 Difference]: Without dead ends: 107261 [2022-11-16 11:50:15,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:15,971 INFO L413 NwaCegarLoop]: 2885 mSDtfsCounter, 1488 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 9601 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 10709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 9601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 3420 Invalid, 10709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1108 Valid, 9601 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-11-16 11:50:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107261 states. [2022-11-16 11:50:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107261 to 105776. [2022-11-16 11:50:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105776 states, 105775 states have (on average 1.1805719688017018) internal successors, (124875), 105775 states have internal predecessors, (124875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105776 states to 105776 states and 124875 transitions. [2022-11-16 11:50:18,163 INFO L78 Accepts]: Start accepts. Automaton has 105776 states and 124875 transitions. Word has length 1087 [2022-11-16 11:50:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:18,165 INFO L495 AbstractCegarLoop]: Abstraction has 105776 states and 124875 transitions. [2022-11-16 11:50:18,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 105776 states and 124875 transitions. [2022-11-16 11:50:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2022-11-16 11:50:18,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:18,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:18,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:50:18,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash 858171085, now seen corresponding path program 1 times [2022-11-16 11:50:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158980776] [2022-11-16 11:50:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 829 proven. 366 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-16 11:50:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158980776] [2022-11-16 11:50:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158980776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467678722] [2022-11-16 11:50:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:21,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:21,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:21,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:21,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:50:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:22,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:50:22,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-16 11:50:22,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:22,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467678722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:22,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:22,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:50:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127638986] [2022-11-16 11:50:22,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:22,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:22,677 INFO L87 Difference]: Start difference. First operand 105776 states and 124875 transitions. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:32,579 INFO L93 Difference]: Finished difference Result 248415 states and 293954 transitions. [2022-11-16 11:50:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 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 1087 [2022-11-16 11:50:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:32,763 INFO L225 Difference]: With dead ends: 248415 [2022-11-16 11:50:32,763 INFO L226 Difference]: Without dead ends: 142639 [2022-11-16 11:50:32,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1088 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:32,802 INFO L413 NwaCegarLoop]: 2622 mSDtfsCounter, 1474 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 5371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:32,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2712 Invalid, 5371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1598 Valid, 3773 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-16 11:50:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142639 states. [2022-11-16 11:50:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142639 to 137172. [2022-11-16 11:50:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137172 states, 137171 states have (on average 1.168927834600608) internal successors, (160343), 137171 states have internal predecessors, (160343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137172 states to 137172 states and 160343 transitions. [2022-11-16 11:50:35,023 INFO L78 Accepts]: Start accepts. Automaton has 137172 states and 160343 transitions. Word has length 1087 [2022-11-16 11:50:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:35,024 INFO L495 AbstractCegarLoop]: Abstraction has 137172 states and 160343 transitions. [2022-11-16 11:50:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 137172 states and 160343 transitions. [2022-11-16 11:50:35,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2022-11-16 11:50:35,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:35,045 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:35,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:35,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:50:35,247 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1544097456, now seen corresponding path program 1 times [2022-11-16 11:50:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:35,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471071240] [2022-11-16 11:50:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 789 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-16 11:50:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471071240] [2022-11-16 11:50:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471071240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:37,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:37,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:50:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837400989] [2022-11-16 11:50:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:37,113 INFO L87 Difference]: Start difference. First operand 137172 states and 160343 transitions. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:47,993 INFO L93 Difference]: Finished difference Result 271620 states and 317963 transitions. [2022-11-16 11:50:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:50:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 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 1120 [2022-11-16 11:50:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:48,192 INFO L225 Difference]: With dead ends: 271620 [2022-11-16 11:50:48,192 INFO L226 Difference]: Without dead ends: 137180 [2022-11-16 11:50:48,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:50:48,265 INFO L413 NwaCegarLoop]: 2815 mSDtfsCounter, 1345 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 5240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3000 Invalid, 5240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-16 11:50:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137180 states. [2022-11-16 11:50:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137180 to 137170. [2022-11-16 11:50:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137170 states, 137169 states have (on average 1.1237816124634574) internal successors, (154148), 137169 states have internal predecessors, (154148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137170 states to 137170 states and 154148 transitions. [2022-11-16 11:50:50,471 INFO L78 Accepts]: Start accepts. Automaton has 137170 states and 154148 transitions. Word has length 1120 [2022-11-16 11:50:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:50,471 INFO L495 AbstractCegarLoop]: Abstraction has 137170 states and 154148 transitions. [2022-11-16 11:50:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 137170 states and 154148 transitions. [2022-11-16 11:50:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2022-11-16 11:50:50,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:50,496 INFO L195 NwaCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:50,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:50:50,497 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1134934162, now seen corresponding path program 1 times [2022-11-16 11:50:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:50,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450715873] [2022-11-16 11:50:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 1130 proven. 366 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 11:50:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450715873] [2022-11-16 11:50:53,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450715873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378658334] [2022-11-16 11:50:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:53,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:53,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:53,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:53,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:50:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:54,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:50:54,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-11-16 11:50:54,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:54,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378658334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:54,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:54,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:50:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971640684] [2022-11-16 11:50:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:50:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:54,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:50:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:50:54,426 INFO L87 Difference]: Start difference. First operand 137170 states and 154148 transitions. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:04,779 INFO L93 Difference]: Finished difference Result 303015 states and 341118 transitions. [2022-11-16 11:51:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:04,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 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 1168 [2022-11-16 11:51:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:04,976 INFO L225 Difference]: With dead ends: 303015 [2022-11-16 11:51:04,976 INFO L226 Difference]: Without dead ends: 168577 [2022-11-16 11:51:05,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:51:05,019 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 1543 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:05,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1152 Invalid, 5320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 4680 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-16 11:51:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168577 states. [2022-11-16 11:51:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168577 to 164471. [2022-11-16 11:51:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164471 states, 164470 states have (on average 1.1024381346142154) internal successors, (181318), 164470 states have internal predecessors, (181318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164471 states to 164471 states and 181318 transitions. [2022-11-16 11:51:07,469 INFO L78 Accepts]: Start accepts. Automaton has 164471 states and 181318 transitions. Word has length 1168 [2022-11-16 11:51:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:07,470 INFO L495 AbstractCegarLoop]: Abstraction has 164471 states and 181318 transitions. [2022-11-16 11:51:07,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 164471 states and 181318 transitions. [2022-11-16 11:51:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2022-11-16 11:51:07,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:07,500 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:07,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 11:51:07,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:51:07,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2005928558, now seen corresponding path program 1 times [2022-11-16 11:51:07,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:07,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101561248] [2022-11-16 11:51:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 848 proven. 484 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:51:12,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:12,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101561248] [2022-11-16 11:51:12,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101561248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:12,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523096442] [2022-11-16 11:51:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:12,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:12,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:12,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:51:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:12,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:51:12,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2022-11-16 11:51:13,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:51:13,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523096442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:13,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:13,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 11:51:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632806821] [2022-11-16 11:51:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:13,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:51:13,008 INFO L87 Difference]: Start difference. First operand 164471 states and 181318 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:24,404 INFO L93 Difference]: Finished difference Result 333127 states and 367123 transitions. [2022-11-16 11:51:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 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 1203 [2022-11-16 11:51:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:24,615 INFO L225 Difference]: With dead ends: 333127 [2022-11-16 11:51:24,615 INFO L226 Difference]: Without dead ends: 171388 [2022-11-16 11:51:24,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:51:24,688 INFO L413 NwaCegarLoop]: 2966 mSDtfsCounter, 1353 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 1549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 5625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1549 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:24,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3131 Invalid, 5625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1549 Valid, 4076 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-16 11:51:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171388 states. [2022-11-16 11:51:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171388 to 168590. [2022-11-16 11:51:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168590 states, 168589 states have (on average 1.0765589688532466) internal successors, (181496), 168589 states have internal predecessors, (181496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168590 states to 168590 states and 181496 transitions. [2022-11-16 11:51:27,051 INFO L78 Accepts]: Start accepts. Automaton has 168590 states and 181496 transitions. Word has length 1203 [2022-11-16 11:51:27,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:27,052 INFO L495 AbstractCegarLoop]: Abstraction has 168590 states and 181496 transitions. [2022-11-16 11:51:27,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 168590 states and 181496 transitions. [2022-11-16 11:51:27,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2022-11-16 11:51:27,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:27,072 INFO L195 NwaCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 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, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:27,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:27,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f054cef8-b8fa-4f9b-a659-30b9fd051928/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:27,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -126547261, now seen corresponding path program 1 times [2022-11-16 11:51:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:27,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781232650] [2022-11-16 11:51:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat