./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN --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 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 --- 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-6b4ec56 [2022-11-20 12:40:49,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:40:49,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:40:49,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:40:49,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:40:49,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:40:49,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:40:49,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:40:49,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:40:49,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:40:49,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:40:49,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:40:49,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:40:49,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:40:49,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:40:49,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:40:49,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:40:49,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:40:49,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:40:49,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:40:49,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:40:49,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:40:49,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:40:49,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:40:49,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:40:49,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:40:49,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:40:49,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:40:49,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:40:49,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:40:49,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:40:49,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:40:49,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:40:49,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:40:49,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:40:49,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:40:49,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:40:49,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:40:49,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:40:49,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:40:49,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:40:49,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:40:49,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:40:49,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:40:49,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:40:49,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:40:49,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:40:49,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:40:49,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:40:49,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:40:49,424 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:40:49,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:40:49,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:40:49,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:40:49,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:40:49,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:40:49,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:40:49,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:40:49,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:40:49,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:40:49,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:40:49,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:40:49,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:40:49,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:40:49,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:40:49,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:40:49,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:49,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:40:49,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:40:49,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:40:49,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:40:49,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:40:49,431 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:40:49,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:40:49,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:40:49,431 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_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 [2022-11-20 12:40:49,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:40:49,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:40:49,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:40:49,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:40:49,823 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:40:49,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2022-11-20 12:40:53,717 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:40:54,244 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:40:54,245 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2022-11-20 12:40:54,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/data/8b53edb14/1f7b1c0f718f4dafadbe8e8570ad1c49/FLAGb3d7cf8d3 [2022-11-20 12:40:54,290 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/data/8b53edb14/1f7b1c0f718f4dafadbe8e8570ad1c49 [2022-11-20 12:40:54,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:40:54,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:40:54,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:54,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:40:54,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:40:54,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:54" (1/1) ... [2022-11-20 12:40:54,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a99ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:54, skipping insertion in model container [2022-11-20 12:40:54,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:40:54" (1/1) ... [2022-11-20 12:40:54,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:40:54,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:40:55,226 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/sv-benchmarks/c/eca-rers2012/Problem03_label54.c[56627,56640] [2022-11-20 12:40:55,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:55,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:40:55,652 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/sv-benchmarks/c/eca-rers2012/Problem03_label54.c[56627,56640] [2022-11-20 12:40:55,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:40:55,701 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:40:55,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55 WrapperNode [2022-11-20 12:40:55,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:40:55,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:55,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:40:55,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:40:55,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:55,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:55,917 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-20 12:40:55,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:40:55,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:40:55,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:40:55,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:40:55,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:55,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:55,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:55,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:40:56,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:40:56,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:40:56,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:40:56,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (1/1) ... [2022-11-20 12:40:56,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:40:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:56,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:40:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:40:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:40:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:40:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:40:56,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:40:56,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:40:56,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:40:58,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:40:58,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:40:58,989 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:40:58,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:58 BoogieIcfgContainer [2022-11-20 12:40:58,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:40:58,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:40:58,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:40:59,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:40:59,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:40:54" (1/3) ... [2022-11-20 12:40:59,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35959085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:59, skipping insertion in model container [2022-11-20 12:40:59,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:40:55" (2/3) ... [2022-11-20 12:40:59,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35959085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:40:59, skipping insertion in model container [2022-11-20 12:40:59,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:40:58" (3/3) ... [2022-11-20 12:40:59,019 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2022-11-20 12:40:59,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:40:59,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:40:59,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:40:59,165 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;@24738465, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:40:59,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:40:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 12:40:59,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:59,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:59,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:40:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash -590757190, now seen corresponding path program 1 times [2022-11-20 12:40:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:59,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521161384] [2022-11-20 12:40:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:00,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:00,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521161384] [2022-11-20 12:41:00,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521161384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:00,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:00,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682752338] [2022-11-20 12:41:00,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:00,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:00,263 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:01,969 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2022-11-20 12:41:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-11-20 12:41:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:02,002 INFO L225 Difference]: With dead ends: 829 [2022-11-20 12:41:02,007 INFO L226 Difference]: Without dead ends: 463 [2022-11-20 12:41:02,017 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 [2022-11-20 12:41:02,025 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 125 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:02,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:41:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-20 12:41:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-11-20 12:41:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2022-11-20 12:41:02,135 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 166 [2022-11-20 12:41:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2022-11-20 12:41:02,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2022-11-20 12:41:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 12:41:02,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:02,150 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:41:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:41:02,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1027354506, now seen corresponding path program 1 times [2022-11-20 12:41:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:02,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164786724] [2022-11-20 12:41:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:02,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164786724] [2022-11-20 12:41:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164786724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:02,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439616972] [2022-11-20 12:41:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:02,637 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:03,859 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2022-11-20 12:41:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-11-20 12:41:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:03,864 INFO L225 Difference]: With dead ends: 1319 [2022-11-20 12:41:03,865 INFO L226 Difference]: Without dead ends: 872 [2022-11-20 12:41:03,866 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 [2022-11-20 12:41:03,868 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:03,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-20 12:41:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2022-11-20 12:41:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-11-20 12:41:03,926 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 171 [2022-11-20 12:41:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:03,928 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-11-20 12:41:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-11-20 12:41:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:41:03,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:03,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2022-11-20 12:41:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:41:03,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2004202496, now seen corresponding path program 1 times [2022-11-20 12:41:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:03,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290470025] [2022-11-20 12:41:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:04,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290470025] [2022-11-20 12:41:04,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290470025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:04,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:04,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010211957] [2022-11-20 12:41:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:04,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:04,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:04,493 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:05,758 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2022-11-20 12:41:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2022-11-20 12:41:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:05,768 INFO L225 Difference]: With dead ends: 2554 [2022-11-20 12:41:05,770 INFO L226 Difference]: Without dead ends: 1686 [2022-11-20 12:41:05,777 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 [2022-11-20 12:41:05,779 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:05,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-11-20 12:41:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-11-20 12:41:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2022-11-20 12:41:05,831 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 186 [2022-11-20 12:41:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:05,834 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2022-11-20 12:41:05,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2022-11-20 12:41:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 12:41:05,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:05,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:05,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:41:05,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1182972067, now seen corresponding path program 1 times [2022-11-20 12:41:05,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:05,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801918161] [2022-11-20 12:41:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:05,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:06,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801918161] [2022-11-20 12:41:06,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801918161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:06,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:06,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137293321] [2022-11-20 12:41:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:06,345 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:07,644 INFO L93 Difference]: Finished difference Result 5017 states and 6707 transitions. [2022-11-20 12:41:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-11-20 12:41:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:07,667 INFO L225 Difference]: With dead ends: 5017 [2022-11-20 12:41:07,668 INFO L226 Difference]: Without dead ends: 3335 [2022-11-20 12:41:07,670 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 [2022-11-20 12:41:07,672 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:07,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-11-20 12:41:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2022-11-20 12:41:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.3230075187969925) internal successors, (4399), 3325 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4399 transitions. [2022-11-20 12:41:07,778 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4399 transitions. Word has length 189 [2022-11-20 12:41:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:07,779 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4399 transitions. [2022-11-20 12:41:07,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4399 transitions. [2022-11-20 12:41:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:41:07,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:07,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:07,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:41:07,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash -50841403, now seen corresponding path program 1 times [2022-11-20 12:41:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:07,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788810144] [2022-11-20 12:41:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:08,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788810144] [2022-11-20 12:41:08,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788810144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:08,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:08,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133317191] [2022-11-20 12:41:08,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:08,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:08,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:08,190 INFO L87 Difference]: Start difference. First operand 3326 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:09,474 INFO L93 Difference]: Finished difference Result 9928 states and 13145 transitions. [2022-11-20 12:41:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-11-20 12:41:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:09,503 INFO L225 Difference]: With dead ends: 9928 [2022-11-20 12:41:09,504 INFO L226 Difference]: Without dead ends: 6604 [2022-11-20 12:41:09,509 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 [2022-11-20 12:41:09,510 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:09,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 167 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:41:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-11-20 12:41:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5768. [2022-11-20 12:41:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.3370903415987516) internal successors, (7711), 5767 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7711 transitions. [2022-11-20 12:41:09,708 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7711 transitions. Word has length 192 [2022-11-20 12:41:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:09,710 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 7711 transitions. [2022-11-20 12:41:09,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7711 transitions. [2022-11-20 12:41:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 12:41:09,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:09,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2022-11-20 12:41:09,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:41:09,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash 564713384, now seen corresponding path program 1 times [2022-11-20 12:41:09,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:09,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529810239] [2022-11-20 12:41:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529810239] [2022-11-20 12:41:10,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529810239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690800476] [2022-11-20 12:41:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:10,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:10,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:10,379 INFO L87 Difference]: Start difference. First operand 5768 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:11,808 INFO L93 Difference]: Finished difference Result 14591 states and 19420 transitions. [2022-11-20 12:41:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:11,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2022-11-20 12:41:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:11,845 INFO L225 Difference]: With dead ends: 14591 [2022-11-20 12:41:11,845 INFO L226 Difference]: Without dead ends: 8825 [2022-11-20 12:41:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:11,854 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:11,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 421 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:41:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2022-11-20 12:41:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8821. [2022-11-20 12:41:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.2786848072562358) internal successors, (11278), 8820 states have internal predecessors, (11278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11278 transitions. [2022-11-20 12:41:12,184 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11278 transitions. Word has length 201 [2022-11-20 12:41:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:12,186 INFO L495 AbstractCegarLoop]: Abstraction has 8821 states and 11278 transitions. [2022-11-20 12:41:12,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11278 transitions. [2022-11-20 12:41:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-20 12:41:12,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:12,208 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:12,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:41:12,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash -567138394, now seen corresponding path program 1 times [2022-11-20 12:41:12,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:12,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865668550] [2022-11-20 12:41:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:12,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865668550] [2022-11-20 12:41:12,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865668550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:12,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590741465] [2022-11-20 12:41:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:12,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:12,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:12,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:41:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:41:13,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:13,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:13,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590741465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:13,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:13,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-20 12:41:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678868681] [2022-11-20 12:41:13,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:13,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:13,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:13,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:13,331 INFO L87 Difference]: Start difference. First operand 8821 states and 11278 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:14,920 INFO L93 Difference]: Finished difference Result 25787 states and 33056 transitions. [2022-11-20 12:41:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 203 [2022-11-20 12:41:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:14,996 INFO L225 Difference]: With dead ends: 25787 [2022-11-20 12:41:14,996 INFO L226 Difference]: Without dead ends: 16968 [2022-11-20 12:41:15,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:15,010 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 232 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:15,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 169 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:41:15,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16968 states. [2022-11-20 12:41:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16968 to 16559. [2022-11-20 12:41:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16559 states, 16558 states have (on average 1.2510568909288562) internal successors, (20715), 16558 states have internal predecessors, (20715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16559 states to 16559 states and 20715 transitions. [2022-11-20 12:41:15,458 INFO L78 Accepts]: Start accepts. Automaton has 16559 states and 20715 transitions. Word has length 203 [2022-11-20 12:41:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:15,459 INFO L495 AbstractCegarLoop]: Abstraction has 16559 states and 20715 transitions. [2022-11-20 12:41:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 16559 states and 20715 transitions. [2022-11-20 12:41:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-20 12:41:15,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:15,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:15,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:15,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:41:15,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1701117943, now seen corresponding path program 1 times [2022-11-20 12:41:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921041323] [2022-11-20 12:41:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:16,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921041323] [2022-11-20 12:41:16,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921041323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:16,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:16,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677566643] [2022-11-20 12:41:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:16,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:16,610 INFO L87 Difference]: Start difference. First operand 16559 states and 20715 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:18,210 INFO L93 Difference]: Finished difference Result 38428 states and 47966 transitions. [2022-11-20 12:41:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2022-11-20 12:41:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:18,261 INFO L225 Difference]: With dead ends: 38428 [2022-11-20 12:41:18,262 INFO L226 Difference]: Without dead ends: 21871 [2022-11-20 12:41:18,282 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 [2022-11-20 12:41:18,284 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:18,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 195 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:41:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21871 states. [2022-11-20 12:41:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21871 to 21857. [2022-11-20 12:41:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21857 states, 21856 states have (on average 1.2374633967789166) internal successors, (27046), 21856 states have internal predecessors, (27046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 27046 transitions. [2022-11-20 12:41:18,812 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 27046 transitions. Word has length 207 [2022-11-20 12:41:18,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:18,812 INFO L495 AbstractCegarLoop]: Abstraction has 21857 states and 27046 transitions. [2022-11-20 12:41:18,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 27046 transitions. [2022-11-20 12:41:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 12:41:18,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:18,846 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:41:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:41:18,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -325061122, now seen corresponding path program 1 times [2022-11-20 12:41:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:18,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959375021] [2022-11-20 12:41:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:19,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959375021] [2022-11-20 12:41:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959375021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419440461] [2022-11-20 12:41:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:19,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:19,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:19,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:41:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:19,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:41:19,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:20,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:20,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419440461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:20,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:20,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:41:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230619433] [2022-11-20 12:41:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:20,420 INFO L87 Difference]: Start difference. First operand 21857 states and 27046 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:21,966 INFO L93 Difference]: Finished difference Result 50637 states and 63488 transitions. [2022-11-20 12:41:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:21,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2022-11-20 12:41:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:22,103 INFO L225 Difference]: With dead ends: 50637 [2022-11-20 12:41:22,104 INFO L226 Difference]: Without dead ends: 29391 [2022-11-20 12:41:22,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:22,158 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 87 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:22,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 398 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2022-11-20 12:41:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 29378. [2022-11-20 12:41:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29378 states, 29377 states have (on average 1.2391326547979713) internal successors, (36402), 29377 states have internal predecessors, (36402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29378 states to 29378 states and 36402 transitions. [2022-11-20 12:41:23,002 INFO L78 Accepts]: Start accepts. Automaton has 29378 states and 36402 transitions. Word has length 214 [2022-11-20 12:41:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 29378 states and 36402 transitions. [2022-11-20 12:41:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 29378 states and 36402 transitions. [2022-11-20 12:41:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-20 12:41:23,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:23,058 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:41:23,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:23,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:23,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash 749729365, now seen corresponding path program 1 times [2022-11-20 12:41:23,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429443435] [2022-11-20 12:41:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:41:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:23,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429443435] [2022-11-20 12:41:23,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429443435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:23,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:23,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752987668] [2022-11-20 12:41:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:23,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:23,582 INFO L87 Difference]: Start difference. First operand 29378 states and 36402 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:24,380 INFO L93 Difference]: Finished difference Result 81392 states and 100767 transitions. [2022-11-20 12:41:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:24,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 227 [2022-11-20 12:41:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:24,498 INFO L225 Difference]: With dead ends: 81392 [2022-11-20 12:41:24,498 INFO L226 Difference]: Without dead ends: 52625 [2022-11-20 12:41:24,524 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 [2022-11-20 12:41:24,525 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:24,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 963 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:41:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52625 states. [2022-11-20 12:41:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52625 to 52622. [2022-11-20 12:41:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52622 states, 52621 states have (on average 1.2153892932479429) internal successors, (63955), 52621 states have internal predecessors, (63955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52622 states to 52622 states and 63955 transitions. [2022-11-20 12:41:25,705 INFO L78 Accepts]: Start accepts. Automaton has 52622 states and 63955 transitions. Word has length 227 [2022-11-20 12:41:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:25,706 INFO L495 AbstractCegarLoop]: Abstraction has 52622 states and 63955 transitions. [2022-11-20 12:41:25,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 52622 states and 63955 transitions. [2022-11-20 12:41:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 12:41:26,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:26,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:41:26,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -585838557, now seen corresponding path program 1 times [2022-11-20 12:41:26,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:26,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870369110] [2022-11-20 12:41:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:41:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870369110] [2022-11-20 12:41:27,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870369110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568963291] [2022-11-20 12:41:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:27,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:27,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:27,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:41:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:27,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:41:27,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:27,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:27,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568963291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:27,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:27,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:41:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860930203] [2022-11-20 12:41:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:27,539 INFO L87 Difference]: Start difference. First operand 52622 states and 63955 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:29,495 INFO L93 Difference]: Finished difference Result 124531 states and 153524 transitions. [2022-11-20 12:41:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:29,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-11-20 12:41:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:29,790 INFO L225 Difference]: With dead ends: 124531 [2022-11-20 12:41:29,790 INFO L226 Difference]: Without dead ends: 72114 [2022-11-20 12:41:29,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:29,849 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:29,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 172 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 12:41:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72114 states. [2022-11-20 12:41:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72114 to 71704. [2022-11-20 12:41:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.183353555639234) internal successors, (84850), 71703 states have internal predecessors, (84850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84850 transitions. [2022-11-20 12:41:31,729 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84850 transitions. Word has length 233 [2022-11-20 12:41:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:31,730 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84850 transitions. [2022-11-20 12:41:31,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84850 transitions. [2022-11-20 12:41:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 12:41:31,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:31,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:31,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:32,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:41:32,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1614905310, now seen corresponding path program 1 times [2022-11-20 12:41:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:32,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193887867] [2022-11-20 12:41:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:41:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193887867] [2022-11-20 12:41:33,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193887867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671189550] [2022-11-20 12:41:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:33,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:33,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:33,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:41:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:33,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:41:33,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:41:33,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:33,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671189550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:33,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:33,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:41:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715267960] [2022-11-20 12:41:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:33,525 INFO L87 Difference]: Start difference. First operand 71704 states and 84850 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:35,458 INFO L93 Difference]: Finished difference Result 143207 states and 169481 transitions. [2022-11-20 12:41:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:35,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 234 [2022-11-20 12:41:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:35,546 INFO L225 Difference]: With dead ends: 143207 [2022-11-20 12:41:35,546 INFO L226 Difference]: Without dead ends: 71708 [2022-11-20 12:41:35,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:35,581 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 260 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:35,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 97 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:35,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71708 states. [2022-11-20 12:41:36,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71708 to 71704. [2022-11-20 12:41:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.1726287603029162) internal successors, (84081), 71703 states have internal predecessors, (84081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84081 transitions. [2022-11-20 12:41:36,969 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84081 transitions. Word has length 234 [2022-11-20 12:41:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:36,970 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84081 transitions. [2022-11-20 12:41:36,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84081 transitions. [2022-11-20 12:41:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 12:41:37,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:37,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 12:41:37,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:37,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1686341063, now seen corresponding path program 1 times [2022-11-20 12:41:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:37,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910113900] [2022-11-20 12:41:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-20 12:41:38,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:38,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910113900] [2022-11-20 12:41:38,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910113900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:38,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725875059] [2022-11-20 12:41:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:38,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:38,017 INFO L87 Difference]: Start difference. First operand 71704 states and 84081 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:40,032 INFO L93 Difference]: Finished difference Result 154410 states and 181101 transitions. [2022-11-20 12:41:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:40,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 237 [2022-11-20 12:41:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:40,150 INFO L225 Difference]: With dead ends: 154410 [2022-11-20 12:41:40,150 INFO L226 Difference]: Without dead ends: 82911 [2022-11-20 12:41:40,196 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 [2022-11-20 12:41:40,197 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:40,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 388 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:41:40,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82911 states. [2022-11-20 12:41:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82911 to 69463. [2022-11-20 12:41:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69463 states, 69462 states have (on average 1.1716046183524804) internal successors, (81382), 69462 states have internal predecessors, (81382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69463 states to 69463 states and 81382 transitions. [2022-11-20 12:41:41,630 INFO L78 Accepts]: Start accepts. Automaton has 69463 states and 81382 transitions. Word has length 237 [2022-11-20 12:41:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:41,630 INFO L495 AbstractCegarLoop]: Abstraction has 69463 states and 81382 transitions. [2022-11-20 12:41:41,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 69463 states and 81382 transitions. [2022-11-20 12:41:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 12:41:41,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:41,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:41:41,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:41:41,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1649515910, now seen corresponding path program 1 times [2022-11-20 12:41:41,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:41,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828541132] [2022-11-20 12:41:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:41,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828541132] [2022-11-20 12:41:42,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828541132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:42,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:42,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:41:42,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949795577] [2022-11-20 12:41:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:42,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:42,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:42,809 INFO L87 Difference]: Start difference. First operand 69463 states and 81382 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:44,653 INFO L93 Difference]: Finished difference Result 139129 states and 163011 transitions. [2022-11-20 12:41:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:44,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2022-11-20 12:41:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:44,747 INFO L225 Difference]: With dead ends: 139129 [2022-11-20 12:41:44,747 INFO L226 Difference]: Without dead ends: 69871 [2022-11-20 12:41:44,776 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 [2022-11-20 12:41:44,777 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:44,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 199 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 12:41:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69871 states. [2022-11-20 12:41:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69871 to 69869. [2022-11-20 12:41:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69869 states, 69868 states have (on average 1.1712515028339154) internal successors, (81833), 69868 states have internal predecessors, (81833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69869 states to 69869 states and 81833 transitions. [2022-11-20 12:41:46,317 INFO L78 Accepts]: Start accepts. Automaton has 69869 states and 81833 transitions. Word has length 240 [2022-11-20 12:41:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:46,317 INFO L495 AbstractCegarLoop]: Abstraction has 69869 states and 81833 transitions. [2022-11-20 12:41:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 69869 states and 81833 transitions. [2022-11-20 12:41:46,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-20 12:41:46,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:46,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 12:41:46,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:41:46,350 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1843214196, now seen corresponding path program 1 times [2022-11-20 12:41:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985032434] [2022-11-20 12:41:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-20 12:41:46,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985032434] [2022-11-20 12:41:46,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985032434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:46,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:46,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:46,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322330896] [2022-11-20 12:41:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:46,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:41:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:41:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:46,806 INFO L87 Difference]: Start difference. First operand 69869 states and 81833 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:49,430 INFO L93 Difference]: Finished difference Result 139603 states and 163557 transitions. [2022-11-20 12:41:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:41:49,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 253 [2022-11-20 12:41:49,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:49,514 INFO L225 Difference]: With dead ends: 139603 [2022-11-20 12:41:49,514 INFO L226 Difference]: Without dead ends: 70345 [2022-11-20 12:41:49,542 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 [2022-11-20 12:41:49,543 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 411 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:49,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 174 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 12:41:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70345 states. [2022-11-20 12:41:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70345 to 67634. [2022-11-20 12:41:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67634 states, 67633 states have (on average 1.173081188177369) internal successors, (79339), 67633 states have internal predecessors, (79339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67634 states to 67634 states and 79339 transitions. [2022-11-20 12:41:50,646 INFO L78 Accepts]: Start accepts. Automaton has 67634 states and 79339 transitions. Word has length 253 [2022-11-20 12:41:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:50,646 INFO L495 AbstractCegarLoop]: Abstraction has 67634 states and 79339 transitions. [2022-11-20 12:41:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 67634 states and 79339 transitions. [2022-11-20 12:41:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-20 12:41:50,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:50,676 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-11-20 12:41:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:41:50,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:50,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1370069441, now seen corresponding path program 1 times [2022-11-20 12:41:50,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:50,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526028374] [2022-11-20 12:41:50,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-20 12:41:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526028374] [2022-11-20 12:41:51,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526028374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101087053] [2022-11-20 12:41:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:51,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:51,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:51,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:41:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:51,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:41:51,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-20 12:41:51,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:51,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101087053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:51,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:51,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:41:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350507076] [2022-11-20 12:41:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:51,877 INFO L87 Difference]: Start difference. First operand 67634 states and 79339 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:53,709 INFO L93 Difference]: Finished difference Result 132475 states and 155143 transitions. [2022-11-20 12:41:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 260 [2022-11-20 12:41:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:53,800 INFO L225 Difference]: With dead ends: 132475 [2022-11-20 12:41:53,800 INFO L226 Difference]: Without dead ends: 65046 [2022-11-20 12:41:53,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:53,838 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:53,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 384 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:41:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65046 states. [2022-11-20 12:41:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65046 to 64792. [2022-11-20 12:41:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64792 states, 64791 states have (on average 1.1605006868237873) internal successors, (75190), 64791 states have internal predecessors, (75190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64792 states to 64792 states and 75190 transitions. [2022-11-20 12:41:55,037 INFO L78 Accepts]: Start accepts. Automaton has 64792 states and 75190 transitions. Word has length 260 [2022-11-20 12:41:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:55,038 INFO L495 AbstractCegarLoop]: Abstraction has 64792 states and 75190 transitions. [2022-11-20 12:41:55,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 64792 states and 75190 transitions. [2022-11-20 12:41:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-11-20 12:41:55,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:55,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:41:55,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:41:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:41:55,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:55,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1308759228, now seen corresponding path program 1 times [2022-11-20 12:41:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:55,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618333405] [2022-11-20 12:41:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 114 proven. 6 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 12:41:55,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:55,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618333405] [2022-11-20 12:41:55,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618333405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:55,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822884296] [2022-11-20 12:41:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:55,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:55,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:55,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:55,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:41:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:56,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:41:56,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 12:41:56,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:41:56,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822884296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:56,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:41:56,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:41:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499860223] [2022-11-20 12:41:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:41:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:56,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:41:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:56,531 INFO L87 Difference]: Start difference. First operand 64792 states and 75190 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:57,602 INFO L93 Difference]: Finished difference Result 182479 states and 211840 transitions. [2022-11-20 12:41:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 265 [2022-11-20 12:41:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:57,765 INFO L225 Difference]: With dead ends: 182479 [2022-11-20 12:41:57,765 INFO L226 Difference]: Without dead ends: 118298 [2022-11-20 12:41:57,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:57,808 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 303 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:57,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 900 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:41:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118298 states. [2022-11-20 12:41:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118298 to 111800. [2022-11-20 12:41:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111800 states, 111799 states have (on average 1.1472821760480862) internal successors, (128265), 111799 states have internal predecessors, (128265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111800 states to 111800 states and 128265 transitions. [2022-11-20 12:42:00,185 INFO L78 Accepts]: Start accepts. Automaton has 111800 states and 128265 transitions. Word has length 265 [2022-11-20 12:42:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:00,185 INFO L495 AbstractCegarLoop]: Abstraction has 111800 states and 128265 transitions. [2022-11-20 12:42:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 111800 states and 128265 transitions. [2022-11-20 12:42:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 12:42:00,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:00,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 12:42:00,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:00,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:42:00,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash -385750121, now seen corresponding path program 1 times [2022-11-20 12:42:00,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:00,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692744161] [2022-11-20 12:42:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:00,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 116 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-20 12:42:01,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:01,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692744161] [2022-11-20 12:42:01,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692744161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:01,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839690861] [2022-11-20 12:42:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:01,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:01,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:01,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:42:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:42:01,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:42:01,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:01,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839690861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:01,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:42:01,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 12:42:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298546271] [2022-11-20 12:42:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:01,808 INFO L87 Difference]: Start difference. First operand 111800 states and 128265 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:04,189 INFO L93 Difference]: Finished difference Result 222177 states and 254951 transitions. [2022-11-20 12:42:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 267 [2022-11-20 12:42:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:04,352 INFO L225 Difference]: With dead ends: 222177 [2022-11-20 12:42:04,352 INFO L226 Difference]: Without dead ends: 110988 [2022-11-20 12:42:04,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:42:04,403 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 104 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:04,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 342 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 12:42:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110988 states. [2022-11-20 12:42:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110988 to 110577. [2022-11-20 12:42:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110577 states, 110576 states have (on average 1.140771957748517) internal successors, (126142), 110576 states have internal predecessors, (126142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110577 states to 110577 states and 126142 transitions. [2022-11-20 12:42:06,956 INFO L78 Accepts]: Start accepts. Automaton has 110577 states and 126142 transitions. Word has length 267 [2022-11-20 12:42:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:06,957 INFO L495 AbstractCegarLoop]: Abstraction has 110577 states and 126142 transitions. [2022-11-20 12:42:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 110577 states and 126142 transitions. [2022-11-20 12:42:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-20 12:42:07,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:07,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:07,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:07,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2725ef-aaeb-4a78-a01b-1d844030b6ac/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:42:07,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 77971101, now seen corresponding path program 1 times [2022-11-20 12:42:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:07,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013838716] [2022-11-20 12:42:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:42:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:07,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013838716] [2022-11-20 12:42:07,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013838716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:07,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:07,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931409219] [2022-11-20 12:42:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:07,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:42:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:42:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:42:07,621 INFO L87 Difference]: Start difference. First operand 110577 states and 126142 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:10,141 INFO L93 Difference]: Finished difference Result 190923 states and 217676 transitions. [2022-11-20 12:42:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:42:10,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 273 [2022-11-20 12:42:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:10,274 INFO L225 Difference]: With dead ends: 190923 [2022-11-20 12:42:10,275 INFO L226 Difference]: Without dead ends: 77709 [2022-11-20 12:42:10,316 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 [2022-11-20 12:42:10,317 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 466 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 59 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:42:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77709 states. [2022-11-20 12:42:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77709 to 75474. [2022-11-20 12:42:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75474 states, 75473 states have (on average 1.0891709618009089) internal successors, (82203), 75473 states have internal predecessors, (82203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75474 states to 75474 states and 82203 transitions. [2022-11-20 12:42:12,146 INFO L78 Accepts]: Start accepts. Automaton has 75474 states and 82203 transitions. Word has length 273 [2022-11-20 12:42:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:12,147 INFO L495 AbstractCegarLoop]: Abstraction has 75474 states and 82203 transitions. [2022-11-20 12:42:12,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 75474 states and 82203 transitions. [2022-11-20 12:42:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 12:42:12,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:12,173 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:42:12,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:42:12,173 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash 672800317, now seen corresponding path program 1 times [2022-11-20 12:42:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726881560] [2022-11-20 12:42:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-20 12:42:12,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726881560] [2022-11-20 12:42:12,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726881560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:12,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:12,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:42:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098137915] [2022-11-20 12:42:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:12,568 INFO L87 Difference]: Start difference. First operand 75474 states and 82203 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:14,574 INFO L93 Difference]: Finished difference Result 162142 states and 176746 transitions. [2022-11-20 12:42:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 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 274 [2022-11-20 12:42:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:14,667 INFO L225 Difference]: With dead ends: 162142 [2022-11-20 12:42:14,667 INFO L226 Difference]: Without dead ends: 87279 [2022-11-20 12:42:14,687 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 [2022-11-20 12:42:14,688 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 202 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:14,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 120 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:42:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87279 states. [2022-11-20 12:42:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87279 to 86259. [2022-11-20 12:42:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86259 states, 86258 states have (on average 1.090727816550349) internal successors, (94084), 86258 states have internal predecessors, (94084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86259 states to 86259 states and 94084 transitions. [2022-11-20 12:42:16,156 INFO L78 Accepts]: Start accepts. Automaton has 86259 states and 94084 transitions. Word has length 274 [2022-11-20 12:42:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:16,157 INFO L495 AbstractCegarLoop]: Abstraction has 86259 states and 94084 transitions. [2022-11-20 12:42:16,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 86259 states and 94084 transitions. [2022-11-20 12:42:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-20 12:42:16,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:16,189 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:42:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:42:16,189 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1441807218, now seen corresponding path program 1 times [2022-11-20 12:42:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505588830] [2022-11-20 12:42:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:42:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:16,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505588830] [2022-11-20 12:42:16,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505588830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:16,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:16,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:16,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101348505] [2022-11-20 12:42:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:16,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:16,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:16,415 INFO L87 Difference]: Start difference. First operand 86259 states and 94084 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:42:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:18,325 INFO L93 Difference]: Finished difference Result 155208 states and 168978 transitions. [2022-11-20 12:42:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:18,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 281 [2022-11-20 12:42:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:18,440 INFO L225 Difference]: With dead ends: 155208 [2022-11-20 12:42:18,440 INFO L226 Difference]: Without dead ends: 77499 [2022-11-20 12:42:18,463 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 [2022-11-20 12:42:18,464 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 218 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:18,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 312 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:42:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77499 states.