./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:51:28,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:51:28,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:51:28,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:51:28,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:51:28,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:51:28,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:51:28,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:51:28,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:51:28,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:51:28,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:51:28,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:51:28,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:51:28,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:51:28,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:51:28,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:51:28,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:51:28,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:51:28,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:51:28,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:51:28,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:51:28,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:51:28,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:51:28,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:51:28,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:51:28,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:51:28,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:51:28,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:51:28,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:51:28,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:51:28,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:51:28,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:51:28,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:51:28,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:51:28,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:51:28,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:51:28,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:51:28,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:51:28,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:51:28,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:51:28,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:51:28,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:51:28,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:51:28,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:51:28,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:51:28,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:51:28,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:51:28,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:51:28,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:51:28,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:51:28,397 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:51:28,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:51:28,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:51:28,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:51:28,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:51:28,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:51:28,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:51:28,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:51:28,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:51:28,401 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:51:28,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:51:28,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:51:28,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:51:28,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:51:28,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:51:28,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:51:28,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:28,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:51:28,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:51:28,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:51:28,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:51:28,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:51:28,413 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:51:28,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:51:28,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:51:28,414 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_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cafc53a40b6e7779bbda9324b8e7811f318944543219bcda44525ed08008a3 [2022-11-16 11:51:28,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:51:28,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:51:28,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:51:28,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:51:28,808 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:51:28,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-11-16 11:51:28,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/data/910e54557/beb882ccf0af405d92804247a24ec984/FLAG10904608c [2022-11-16 11:51:29,703 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:51:29,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/sv-benchmarks/c/eca-rers2012/Problem17_label46.c [2022-11-16 11:51:29,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/data/910e54557/beb882ccf0af405d92804247a24ec984/FLAG10904608c [2022-11-16 11:51:29,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/data/910e54557/beb882ccf0af405d92804247a24ec984 [2022-11-16 11:51:29,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:51:29,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:51:29,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:29,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:51:29,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:51:29,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:29" (1/1) ... [2022-11-16 11:51:29,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254924c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:29, skipping insertion in model container [2022-11-16 11:51:29,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:29" (1/1) ... [2022-11-16 11:51:29,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:51:29,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:51:30,224 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/sv-benchmarks/c/eca-rers2012/Problem17_label46.c[1649,1662] [2022-11-16 11:51:31,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:31,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:51:31,303 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/sv-benchmarks/c/eca-rers2012/Problem17_label46.c[1649,1662] [2022-11-16 11:51:31,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:31,747 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:51:31,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31 WrapperNode [2022-11-16 11:51:31,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:31,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:31,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:51:31,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:51:31,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:31,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,276 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-16 11:51:32,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:32,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:51:32,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:51:32,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:51:32,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,654 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:51:32,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:51:32,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:51:32,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:51:32,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (1/1) ... [2022-11-16 11:51:32,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:32,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:51:32,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:51:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:51:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:51:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:51:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:51:32,934 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:51:32,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:51:38,625 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:51:38,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:51:38,652 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:51:38,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:38 BoogieIcfgContainer [2022-11-16 11:51:38,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:51:38,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:51:38,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:51:38,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:51:38,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:51:29" (1/3) ... [2022-11-16 11:51:38,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f29552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:38, skipping insertion in model container [2022-11-16 11:51:38,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:31" (2/3) ... [2022-11-16 11:51:38,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f29552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:38, skipping insertion in model container [2022-11-16 11:51:38,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:38" (3/3) ... [2022-11-16 11:51:38,673 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2022-11-16 11:51:38,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:51:38,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:51:38,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:51:38,852 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;@e7c8434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:51:38,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:51:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:51:38,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:38,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:38,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-11-16 11:51:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:38,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093485748] [2022-11-16 11:51:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:39,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093485748] [2022-11-16 11:51:39,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093485748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:39,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:39,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:51:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166325510] [2022-11-16 11:51:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:39,293 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:44,267 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-16 11:51:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:44,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-16 11:51:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:44,310 INFO L225 Difference]: With dead ends: 1642 [2022-11-16 11:51:44,311 INFO L226 Difference]: Without dead ends: 975 [2022-11-16 11:51:44,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:44,321 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 480 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:44,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 11:51:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-16 11:51:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-16 11:51:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-16 11:51:44,431 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 10 [2022-11-16 11:51:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:44,432 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-16 11:51:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-16 11:51:44,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 11:51:44,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:44,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:51:44,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash -225164890, now seen corresponding path program 1 times [2022-11-16 11:51:44,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:44,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524185566] [2022-11-16 11:51:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:44,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:44,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524185566] [2022-11-16 11:51:44,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524185566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:44,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:44,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690932525] [2022-11-16 11:51:44,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:44,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:44,771 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:48,988 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-11-16 11:51:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 11:51:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:49,010 INFO L225 Difference]: With dead ends: 2814 [2022-11-16 11:51:49,010 INFO L226 Difference]: Without dead ends: 1844 [2022-11-16 11:51:49,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:49,024 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 481 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:49,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:51:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-16 11:51:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-11-16 11:51:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-11-16 11:51:49,114 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 80 [2022-11-16 11:51:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:49,118 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-11-16 11:51:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-11-16 11:51:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:51:49,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:49,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:49,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:51:49,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1464739895, now seen corresponding path program 1 times [2022-11-16 11:51:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:49,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490289219] [2022-11-16 11:51:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:49,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490289219] [2022-11-16 11:51:49,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490289219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:49,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:49,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:51:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606463802] [2022-11-16 11:51:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:49,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:49,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:49,431 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:53,118 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-11-16 11:51:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-16 11:51:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:53,133 INFO L225 Difference]: With dead ends: 5395 [2022-11-16 11:51:53,133 INFO L226 Difference]: Without dead ends: 2701 [2022-11-16 11:51:53,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:53,149 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:53,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 11:51:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-16 11:51:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-11-16 11:51:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-11-16 11:51:53,223 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 102 [2022-11-16 11:51:53,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:53,225 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-11-16 11:51:53,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-11-16 11:51:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 11:51:53,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:53,238 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:51:53,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1549840643, now seen corresponding path program 1 times [2022-11-16 11:51:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:53,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135912309] [2022-11-16 11:51:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:53,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135912309] [2022-11-16 11:51:53,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135912309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:53,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:53,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427340845] [2022-11-16 11:51:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:53,801 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:56,955 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-11-16 11:51:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:51:56,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-11-16 11:51:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:56,986 INFO L225 Difference]: With dead ends: 7108 [2022-11-16 11:51:56,986 INFO L226 Difference]: Without dead ends: 4409 [2022-11-16 11:51:56,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:57,000 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:57,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:51:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-16 11:51:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-16 11:51:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-11-16 11:51:57,113 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 162 [2022-11-16 11:51:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:57,115 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-11-16 11:51:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-11-16 11:51:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-16 11:51:57,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:57,121 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:57,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:51:57,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2134418504, now seen corresponding path program 1 times [2022-11-16 11:51:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:57,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062721243] [2022-11-16 11:51:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 11:51:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062721243] [2022-11-16 11:51:57,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062721243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:57,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:57,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:51:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722092615] [2022-11-16 11:51:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:57,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:51:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:51:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:51:57,403 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:00,841 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-11-16 11:52:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 164 [2022-11-16 11:52:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:00,877 INFO L225 Difference]: With dead ends: 10936 [2022-11-16 11:52:00,878 INFO L226 Difference]: Without dead ends: 6528 [2022-11-16 11:52:00,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:00,885 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 441 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:00,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 11:52:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-11-16 11:52:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-11-16 11:52:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-11-16 11:52:01,023 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 164 [2022-11-16 11:52:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:01,024 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-11-16 11:52:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-11-16 11:52:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-16 11:52:01,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:01,034 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:52:01,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 741644542, now seen corresponding path program 1 times [2022-11-16 11:52:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:01,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162681868] [2022-11-16 11:52:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:01,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162681868] [2022-11-16 11:52:01,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162681868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:01,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672614753] [2022-11-16 11:52:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:01,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:01,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:01,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:52:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:02,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:52:02,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:02,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:03,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672614753] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:03,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:03,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2022-11-16 11:52:03,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807718079] [2022-11-16 11:52:03,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:03,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:52:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:52:03,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:52:03,151 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:08,737 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2022-11-16 11:52:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:52:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2022-11-16 11:52:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:08,777 INFO L225 Difference]: With dead ends: 15171 [2022-11-16 11:52:08,777 INFO L226 Difference]: Without dead ends: 10791 [2022-11-16 11:52:08,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:52:08,784 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 813 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:08,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 159 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 11:52:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-11-16 11:52:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2022-11-16 11:52:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2022-11-16 11:52:09,045 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 230 [2022-11-16 11:52:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:09,046 INFO L495 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2022-11-16 11:52:09,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2022-11-16 11:52:09,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-16 11:52:09,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:09,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:09,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:52:09,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:09,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:09,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1310280645, now seen corresponding path program 1 times [2022-11-16 11:52:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:09,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843818056] [2022-11-16 11:52:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-16 11:52:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:09,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843818056] [2022-11-16 11:52:09,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843818056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:09,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:09,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736669383] [2022-11-16 11:52:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:09,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:09,632 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:12,898 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2022-11-16 11:52:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 242 [2022-11-16 11:52:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:12,934 INFO L225 Difference]: With dead ends: 23703 [2022-11-16 11:52:12,934 INFO L226 Difference]: Without dead ends: 12491 [2022-11-16 11:52:12,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:12,948 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:52:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-11-16 11:52:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2022-11-16 11:52:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2022-11-16 11:52:13,206 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 242 [2022-11-16 11:52:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:13,207 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2022-11-16 11:52:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2022-11-16 11:52:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-16 11:52:13,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:13,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:52:13,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2057438562, now seen corresponding path program 1 times [2022-11-16 11:52:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:13,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681871542] [2022-11-16 11:52:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-16 11:52:13,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:13,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681871542] [2022-11-16 11:52:13,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681871542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:13,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:13,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855466696] [2022-11-16 11:52:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:13,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:13,510 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:17,097 INFO L93 Difference]: Finished difference Result 30511 states and 34976 transitions. [2022-11-16 11:52:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 282 [2022-11-16 11:52:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:17,135 INFO L225 Difference]: With dead ends: 30511 [2022-11-16 11:52:17,135 INFO L226 Difference]: Without dead ends: 15866 [2022-11-16 11:52:17,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:17,154 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 534 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:17,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 640 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 11:52:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2022-11-16 11:52:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 15010. [2022-11-16 11:52:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15010 states, 15009 states have (on average 1.1277233659804118) internal successors, (16926), 15009 states have internal predecessors, (16926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15010 states to 15010 states and 16926 transitions. [2022-11-16 11:52:17,441 INFO L78 Accepts]: Start accepts. Automaton has 15010 states and 16926 transitions. Word has length 282 [2022-11-16 11:52:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:17,442 INFO L495 AbstractCegarLoop]: Abstraction has 15010 states and 16926 transitions. [2022-11-16 11:52:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 15010 states and 16926 transitions. [2022-11-16 11:52:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-16 11:52:17,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:17,450 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:52:17,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:17,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1507858308, now seen corresponding path program 1 times [2022-11-16 11:52:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:17,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055765411] [2022-11-16 11:52:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-16 11:52:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:17,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055765411] [2022-11-16 11:52:17,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055765411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:17,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:17,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605211014] [2022-11-16 11:52:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:17,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:17,981 INFO L87 Difference]: Start difference. First operand 15010 states and 16926 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:21,305 INFO L93 Difference]: Finished difference Result 38116 states and 42953 transitions. [2022-11-16 11:52:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 304 [2022-11-16 11:52:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:21,355 INFO L225 Difference]: With dead ends: 38116 [2022-11-16 11:52:21,355 INFO L226 Difference]: Without dead ends: 23108 [2022-11-16 11:52:21,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:21,373 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 316 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:21,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 784 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:52:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2022-11-16 11:52:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 22244. [2022-11-16 11:52:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 22243 states have (on average 1.1109562559007329) internal successors, (24711), 22243 states have internal predecessors, (24711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 24711 transitions. [2022-11-16 11:52:21,755 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 24711 transitions. Word has length 304 [2022-11-16 11:52:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:21,756 INFO L495 AbstractCegarLoop]: Abstraction has 22244 states and 24711 transitions. [2022-11-16 11:52:21,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 24711 transitions. [2022-11-16 11:52:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-16 11:52:21,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:21,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:21,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:52:21,766 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1876690948, now seen corresponding path program 1 times [2022-11-16 11:52:21,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:21,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920758311] [2022-11-16 11:52:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:21,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 11:52:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:22,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920758311] [2022-11-16 11:52:22,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920758311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:22,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:22,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992823449] [2022-11-16 11:52:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:22,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:22,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:22,318 INFO L87 Difference]: Start difference. First operand 22244 states and 24711 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:25,083 INFO L93 Difference]: Finished difference Result 47458 states and 52810 transitions. [2022-11-16 11:52:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:25,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 309 [2022-11-16 11:52:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:25,127 INFO L225 Difference]: With dead ends: 47458 [2022-11-16 11:52:25,127 INFO L226 Difference]: Without dead ends: 24791 [2022-11-16 11:52:25,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:25,145 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:25,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 702 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:52:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2022-11-16 11:52:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24785. [2022-11-16 11:52:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24785 states, 24784 states have (on average 1.107125564880568) internal successors, (27439), 24784 states have internal predecessors, (27439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24785 states to 24785 states and 27439 transitions. [2022-11-16 11:52:25,540 INFO L78 Accepts]: Start accepts. Automaton has 24785 states and 27439 transitions. Word has length 309 [2022-11-16 11:52:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:25,541 INFO L495 AbstractCegarLoop]: Abstraction has 24785 states and 27439 transitions. [2022-11-16 11:52:25,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 24785 states and 27439 transitions. [2022-11-16 11:52:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-11-16 11:52:25,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:25,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:25,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:52:25,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2084541808, now seen corresponding path program 1 times [2022-11-16 11:52:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:25,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439884404] [2022-11-16 11:52:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:26,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:26,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439884404] [2022-11-16 11:52:26,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439884404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:26,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:26,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895006765] [2022-11-16 11:52:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:26,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:52:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:52:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:52:26,174 INFO L87 Difference]: Start difference. First operand 24785 states and 27439 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:30,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:30,983 INFO L93 Difference]: Finished difference Result 63641 states and 70643 transitions. [2022-11-16 11:52:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:52:30,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 349 [2022-11-16 11:52:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:31,041 INFO L225 Difference]: With dead ends: 63641 [2022-11-16 11:52:31,041 INFO L226 Difference]: Without dead ends: 38008 [2022-11-16 11:52:31,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:52:31,060 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 556 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:31,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 293 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:52:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38008 states. [2022-11-16 11:52:31,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38008 to 37986. [2022-11-16 11:52:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37986 states, 37985 states have (on average 1.1046728971962616) internal successors, (41961), 37985 states have internal predecessors, (41961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37986 states to 37986 states and 41961 transitions. [2022-11-16 11:52:31,734 INFO L78 Accepts]: Start accepts. Automaton has 37986 states and 41961 transitions. Word has length 349 [2022-11-16 11:52:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:31,735 INFO L495 AbstractCegarLoop]: Abstraction has 37986 states and 41961 transitions. [2022-11-16 11:52:31,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 37986 states and 41961 transitions. [2022-11-16 11:52:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-16 11:52:31,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:31,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:52:31,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1238549206, now seen corresponding path program 1 times [2022-11-16 11:52:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521242316] [2022-11-16 11:52:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:52:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521242316] [2022-11-16 11:52:32,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521242316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:32,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:32,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132551061] [2022-11-16 11:52:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:32,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:32,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:32,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:32,281 INFO L87 Difference]: Start difference. First operand 37986 states and 41961 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:35,782 INFO L93 Difference]: Finished difference Result 85365 states and 94453 transitions. [2022-11-16 11:52:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:35,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 353 [2022-11-16 11:52:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:35,847 INFO L225 Difference]: With dead ends: 85365 [2022-11-16 11:52:35,847 INFO L226 Difference]: Without dead ends: 47381 [2022-11-16 11:52:35,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:35,873 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 337 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:35,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 652 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:52:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47381 states. [2022-11-16 11:52:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47381 to 46935. [2022-11-16 11:52:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46935 states, 46934 states have (on average 1.1060212212894702) internal successors, (51910), 46934 states have internal predecessors, (51910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46935 states to 46935 states and 51910 transitions. [2022-11-16 11:52:36,752 INFO L78 Accepts]: Start accepts. Automaton has 46935 states and 51910 transitions. Word has length 353 [2022-11-16 11:52:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:36,753 INFO L495 AbstractCegarLoop]: Abstraction has 46935 states and 51910 transitions. [2022-11-16 11:52:36,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:36,753 INFO L276 IsEmpty]: Start isEmpty. Operand 46935 states and 51910 transitions. [2022-11-16 11:52:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-16 11:52:36,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:36,768 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:36,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:52:36,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2012753800, now seen corresponding path program 1 times [2022-11-16 11:52:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:36,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700979635] [2022-11-16 11:52:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 11:52:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700979635] [2022-11-16 11:52:37,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700979635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:37,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:37,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721514361] [2022-11-16 11:52:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:37,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:37,385 INFO L87 Difference]: Start difference. First operand 46935 states and 51910 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:40,904 INFO L93 Difference]: Finished difference Result 104932 states and 116096 transitions. [2022-11-16 11:52:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 424 [2022-11-16 11:52:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:40,998 INFO L225 Difference]: With dead ends: 104932 [2022-11-16 11:52:40,998 INFO L226 Difference]: Without dead ends: 57999 [2022-11-16 11:52:41,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:41,028 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 305 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:41,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 327 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:52:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57999 states. [2022-11-16 11:52:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57999 to 54591. [2022-11-16 11:52:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54591 states, 54590 states have (on average 1.0996519509067595) internal successors, (60030), 54590 states have internal predecessors, (60030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54591 states to 54591 states and 60030 transitions. [2022-11-16 11:52:42,003 INFO L78 Accepts]: Start accepts. Automaton has 54591 states and 60030 transitions. Word has length 424 [2022-11-16 11:52:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:42,004 INFO L495 AbstractCegarLoop]: Abstraction has 54591 states and 60030 transitions. [2022-11-16 11:52:42,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 54591 states and 60030 transitions. [2022-11-16 11:52:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-16 11:52:42,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:42,025 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:42,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:52:42,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 368948727, now seen corresponding path program 1 times [2022-11-16 11:52:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630035039] [2022-11-16 11:52:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 11:52:43,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:43,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630035039] [2022-11-16 11:52:43,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630035039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:43,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:43,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:43,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287628704] [2022-11-16 11:52:43,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:43,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:43,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:43,172 INFO L87 Difference]: Start difference. First operand 54591 states and 60030 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:46,510 INFO L93 Difference]: Finished difference Result 119829 states and 131917 transitions. [2022-11-16 11:52:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 473 [2022-11-16 11:52:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:46,592 INFO L225 Difference]: With dead ends: 119829 [2022-11-16 11:52:46,592 INFO L226 Difference]: Without dead ends: 65240 [2022-11-16 11:52:46,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:46,633 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 316 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:46,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 325 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:52:46,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65240 states. [2022-11-16 11:52:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65240 to 57569. [2022-11-16 11:52:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57569 states, 57568 states have (on average 1.097206781545303) internal successors, (63164), 57568 states have internal predecessors, (63164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57569 states to 57569 states and 63164 transitions. [2022-11-16 11:52:47,778 INFO L78 Accepts]: Start accepts. Automaton has 57569 states and 63164 transitions. Word has length 473 [2022-11-16 11:52:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:47,778 INFO L495 AbstractCegarLoop]: Abstraction has 57569 states and 63164 transitions. [2022-11-16 11:52:47,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 57569 states and 63164 transitions. [2022-11-16 11:52:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-16 11:52:47,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:47,796 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:47,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:52:47,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:47,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -686282333, now seen corresponding path program 1 times [2022-11-16 11:52:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:47,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416359903] [2022-11-16 11:52:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-16 11:52:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:48,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416359903] [2022-11-16 11:52:48,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416359903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:48,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:48,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:52:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791266002] [2022-11-16 11:52:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:48,479 INFO L87 Difference]: Start difference. First operand 57569 states and 63164 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:50,583 INFO L93 Difference]: Finished difference Result 114273 states and 125404 transitions. [2022-11-16 11:52:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 484 [2022-11-16 11:52:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:50,646 INFO L225 Difference]: With dead ends: 114273 [2022-11-16 11:52:50,646 INFO L226 Difference]: Without dead ends: 56705 [2022-11-16 11:52:50,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:50,667 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:50,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 82 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 11:52:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56705 states. [2022-11-16 11:52:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56705 to 56701. [2022-11-16 11:52:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56701 states, 56700 states have (on average 1.0971428571428572) internal successors, (62208), 56700 states have internal predecessors, (62208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56701 states to 56701 states and 62208 transitions. [2022-11-16 11:52:51,556 INFO L78 Accepts]: Start accepts. Automaton has 56701 states and 62208 transitions. Word has length 484 [2022-11-16 11:52:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:51,556 INFO L495 AbstractCegarLoop]: Abstraction has 56701 states and 62208 transitions. [2022-11-16 11:52:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 56701 states and 62208 transitions. [2022-11-16 11:52:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-16 11:52:51,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:51,567 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:51,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:52:51,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash 144822832, now seen corresponding path program 1 times [2022-11-16 11:52:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:51,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631350375] [2022-11-16 11:52:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 11:52:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631350375] [2022-11-16 11:52:52,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631350375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:52,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728128877] [2022-11-16 11:52:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:52,351 INFO L87 Difference]: Start difference. First operand 56701 states and 62208 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:55,686 INFO L93 Difference]: Finished difference Result 122760 states and 134268 transitions. [2022-11-16 11:52:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:52:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 488 [2022-11-16 11:52:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:55,754 INFO L225 Difference]: With dead ends: 122760 [2022-11-16 11:52:55,755 INFO L226 Difference]: Without dead ends: 66061 [2022-11-16 11:52:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:55,780 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 333 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 119 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:52:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66061 states. [2022-11-16 11:52:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66061 to 52842. [2022-11-16 11:52:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52842 states, 52841 states have (on average 1.088756836547378) internal successors, (57531), 52841 states have internal predecessors, (57531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52842 states to 52842 states and 57531 transitions. [2022-11-16 11:52:56,786 INFO L78 Accepts]: Start accepts. Automaton has 52842 states and 57531 transitions. Word has length 488 [2022-11-16 11:52:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:56,786 INFO L495 AbstractCegarLoop]: Abstraction has 52842 states and 57531 transitions. [2022-11-16 11:52:56,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 52842 states and 57531 transitions. [2022-11-16 11:52:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-11-16 11:52:56,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:56,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:56,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:52:56,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash -439942955, now seen corresponding path program 1 times [2022-11-16 11:52:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:56,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253954704] [2022-11-16 11:52:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 11:52:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:57,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253954704] [2022-11-16 11:52:57,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253954704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:57,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:57,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:52:57,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692392163] [2022-11-16 11:52:57,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:52:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:52:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:52:57,851 INFO L87 Difference]: Start difference. First operand 52842 states and 57531 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:01,044 INFO L93 Difference]: Finished difference Result 108662 states and 118298 transitions. [2022-11-16 11:53:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 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 587 [2022-11-16 11:53:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:01,104 INFO L225 Difference]: With dead ends: 108662 [2022-11-16 11:53:01,104 INFO L226 Difference]: Without dead ends: 55397 [2022-11-16 11:53:01,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:01,125 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 453 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:01,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 651 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:53:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55397 states. [2022-11-16 11:53:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55397 to 51559. [2022-11-16 11:53:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51559 states, 51558 states have (on average 1.0857674851623413) internal successors, (55980), 51558 states have internal predecessors, (55980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51559 states to 51559 states and 55980 transitions. [2022-11-16 11:53:02,028 INFO L78 Accepts]: Start accepts. Automaton has 51559 states and 55980 transitions. Word has length 587 [2022-11-16 11:53:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 51559 states and 55980 transitions. [2022-11-16 11:53:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 51559 states and 55980 transitions. [2022-11-16 11:53:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-16 11:53:02,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:02,050 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:02,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:53:02,050 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 678088477, now seen corresponding path program 1 times [2022-11-16 11:53:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:02,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376631587] [2022-11-16 11:53:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-16 11:53:02,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:02,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376631587] [2022-11-16 11:53:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376631587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:02,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:02,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897342940] [2022-11-16 11:53:02,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:02,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:02,420 INFO L87 Difference]: Start difference. First operand 51559 states and 55980 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:05,397 INFO L93 Difference]: Finished difference Result 104388 states and 113357 transitions. [2022-11-16 11:53:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 625 [2022-11-16 11:53:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:05,454 INFO L225 Difference]: With dead ends: 104388 [2022-11-16 11:53:05,454 INFO L226 Difference]: Without dead ends: 52831 [2022-11-16 11:53:05,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:05,479 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 477 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:05,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 614 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:53:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52831 states. [2022-11-16 11:53:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52831 to 52828. [2022-11-16 11:53:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 52827 states have (on average 1.0782175781323944) internal successors, (56959), 52827 states have internal predecessors, (56959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 56959 transitions. [2022-11-16 11:53:06,531 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 56959 transitions. Word has length 625 [2022-11-16 11:53:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:06,532 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 56959 transitions. [2022-11-16 11:53:06,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 56959 transitions. [2022-11-16 11:53:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-16 11:53:06,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:06,563 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:53:06,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:53:06,564 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash 46869252, now seen corresponding path program 1 times [2022-11-16 11:53:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006409877] [2022-11-16 11:53:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-16 11:53:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:07,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006409877] [2022-11-16 11:53:07,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006409877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:07,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:07,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:53:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136432975] [2022-11-16 11:53:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:07,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:07,838 INFO L87 Difference]: Start difference. First operand 52828 states and 56959 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:12,626 INFO L93 Difference]: Finished difference Result 124839 states and 134597 transitions. [2022-11-16 11:53:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:53:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 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 637 [2022-11-16 11:53:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:12,700 INFO L225 Difference]: With dead ends: 124839 [2022-11-16 11:53:12,700 INFO L226 Difference]: Without dead ends: 72013 [2022-11-16 11:53:12,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:53:12,726 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 795 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:12,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 125 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2145 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:53:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72013 states. [2022-11-16 11:53:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72013 to 69877. [2022-11-16 11:53:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69877 states, 69876 states have (on average 1.0778521953174194) internal successors, (75316), 69876 states have internal predecessors, (75316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69877 states to 69877 states and 75316 transitions. [2022-11-16 11:53:13,692 INFO L78 Accepts]: Start accepts. Automaton has 69877 states and 75316 transitions. Word has length 637 [2022-11-16 11:53:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:13,692 INFO L495 AbstractCegarLoop]: Abstraction has 69877 states and 75316 transitions. [2022-11-16 11:53:13,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 69877 states and 75316 transitions. [2022-11-16 11:53:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-16 11:53:13,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:13,720 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:13,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:53:13,720 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -792180794, now seen corresponding path program 1 times [2022-11-16 11:53:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:13,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809479135] [2022-11-16 11:53:13,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-16 11:53:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809479135] [2022-11-16 11:53:14,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809479135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:14,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:14,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465948229] [2022-11-16 11:53:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:14,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:14,993 INFO L87 Difference]: Start difference. First operand 69877 states and 75316 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:18,430 INFO L93 Difference]: Finished difference Result 145291 states and 156721 transitions. [2022-11-16 11:53:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:18,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 656 [2022-11-16 11:53:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:18,508 INFO L225 Difference]: With dead ends: 145291 [2022-11-16 11:53:18,508 INFO L226 Difference]: Without dead ends: 75416 [2022-11-16 11:53:18,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:18,536 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 360 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:18,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 231 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:53:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75416 states. [2022-11-16 11:53:19,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75416 to 75412. [2022-11-16 11:53:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75412 states, 75411 states have (on average 1.073981249419846) internal successors, (80990), 75411 states have internal predecessors, (80990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75412 states to 75412 states and 80990 transitions. [2022-11-16 11:53:19,698 INFO L78 Accepts]: Start accepts. Automaton has 75412 states and 80990 transitions. Word has length 656 [2022-11-16 11:53:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:19,699 INFO L495 AbstractCegarLoop]: Abstraction has 75412 states and 80990 transitions. [2022-11-16 11:53:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 75412 states and 80990 transitions. [2022-11-16 11:53:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-11-16 11:53:19,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:19,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:19,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:53:19,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -580776564, now seen corresponding path program 1 times [2022-11-16 11:53:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:19,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142660927] [2022-11-16 11:53:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-16 11:53:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:20,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142660927] [2022-11-16 11:53:20,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142660927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:20,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:20,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113538764] [2022-11-16 11:53:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:20,919 INFO L87 Difference]: Start difference. First operand 75412 states and 80990 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:24,445 INFO L93 Difference]: Finished difference Result 162774 states and 174842 transitions. [2022-11-16 11:53:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:24,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 744 [2022-11-16 11:53:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:24,545 INFO L225 Difference]: With dead ends: 162774 [2022-11-16 11:53:24,546 INFO L226 Difference]: Without dead ends: 87364 [2022-11-16 11:53:24,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:24,579 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 255 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:24,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 191 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:53:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87364 states. [2022-11-16 11:53:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87364 to 79676. [2022-11-16 11:53:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79676 states, 79675 states have (on average 1.0739253216190776) internal successors, (85565), 79675 states have internal predecessors, (85565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79676 states to 79676 states and 85565 transitions. [2022-11-16 11:53:26,102 INFO L78 Accepts]: Start accepts. Automaton has 79676 states and 85565 transitions. Word has length 744 [2022-11-16 11:53:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:26,103 INFO L495 AbstractCegarLoop]: Abstraction has 79676 states and 85565 transitions. [2022-11-16 11:53:26,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 79676 states and 85565 transitions. [2022-11-16 11:53:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-11-16 11:53:26,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:26,139 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:53:26,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1939600823, now seen corresponding path program 1 times [2022-11-16 11:53:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:26,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644804062] [2022-11-16 11:53:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1465 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-11-16 11:53:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:27,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644804062] [2022-11-16 11:53:27,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644804062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:27,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:27,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895587527] [2022-11-16 11:53:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:27,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:27,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:27,105 INFO L87 Difference]: Start difference. First operand 79676 states and 85565 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:30,283 INFO L93 Difference]: Finished difference Result 166604 states and 178965 transitions. [2022-11-16 11:53:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 762 [2022-11-16 11:53:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:30,383 INFO L225 Difference]: With dead ends: 166604 [2022-11-16 11:53:30,383 INFO L226 Difference]: Without dead ends: 86930 [2022-11-16 11:53:30,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:30,398 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 400 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:30,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 202 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:53:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86930 states. [2022-11-16 11:53:31,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86930 to 83088. [2022-11-16 11:53:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83088 states, 83087 states have (on average 1.0727791351234248) internal successors, (89134), 83087 states have internal predecessors, (89134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83088 states to 83088 states and 89134 transitions. [2022-11-16 11:53:31,845 INFO L78 Accepts]: Start accepts. Automaton has 83088 states and 89134 transitions. Word has length 762 [2022-11-16 11:53:31,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 83088 states and 89134 transitions. [2022-11-16 11:53:31,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 83088 states and 89134 transitions. [2022-11-16 11:53:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-11-16 11:53:31,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:31,898 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:53:31,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:53:31,898 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1858694103, now seen corresponding path program 1 times [2022-11-16 11:53:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:31,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797281679] [2022-11-16 11:53:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-16 11:53:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797281679] [2022-11-16 11:53:33,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797281679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:33,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:33,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697644877] [2022-11-16 11:53:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:33,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:33,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:33,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:33,307 INFO L87 Difference]: Start difference. First operand 83088 states and 89134 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:36,065 INFO L93 Difference]: Finished difference Result 170009 states and 182272 transitions. [2022-11-16 11:53:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 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 770 [2022-11-16 11:53:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:36,150 INFO L225 Difference]: With dead ends: 170009 [2022-11-16 11:53:36,150 INFO L226 Difference]: Without dead ends: 86923 [2022-11-16 11:53:36,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:36,187 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 295 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:36,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 235 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:53:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86923 states. [2022-11-16 11:53:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86923 to 82663. [2022-11-16 11:53:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82663 states, 82662 states have (on average 1.0720766494882776) internal successors, (88620), 82662 states have internal predecessors, (88620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82663 states to 82663 states and 88620 transitions. [2022-11-16 11:53:37,867 INFO L78 Accepts]: Start accepts. Automaton has 82663 states and 88620 transitions. Word has length 770 [2022-11-16 11:53:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:37,868 INFO L495 AbstractCegarLoop]: Abstraction has 82663 states and 88620 transitions. [2022-11-16 11:53:37,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 82663 states and 88620 transitions. [2022-11-16 11:53:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-11-16 11:53:37,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:37,900 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:37,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:53:37,900 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash 331354568, now seen corresponding path program 1 times [2022-11-16 11:53:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:37,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166607073] [2022-11-16 11:53:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-16 11:53:39,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:39,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166607073] [2022-11-16 11:53:39,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166607073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:39,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:39,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274853450] [2022-11-16 11:53:39,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:39,599 INFO L87 Difference]: Start difference. First operand 82663 states and 88620 transitions. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:43,488 INFO L93 Difference]: Finished difference Result 175557 states and 188049 transitions. [2022-11-16 11:53:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 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 788 [2022-11-16 11:53:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:43,586 INFO L225 Difference]: With dead ends: 175557 [2022-11-16 11:53:43,586 INFO L226 Difference]: Without dead ends: 92896 [2022-11-16 11:53:43,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:43,603 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 58 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:43,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 640 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:53:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92896 states. [2022-11-16 11:53:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92896 to 87332. [2022-11-16 11:53:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87332 states, 87331 states have (on average 1.0706736439523192) internal successors, (93503), 87331 states have internal predecessors, (93503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87332 states to 87332 states and 93503 transitions. [2022-11-16 11:53:44,905 INFO L78 Accepts]: Start accepts. Automaton has 87332 states and 93503 transitions. Word has length 788 [2022-11-16 11:53:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:44,905 INFO L495 AbstractCegarLoop]: Abstraction has 87332 states and 93503 transitions. [2022-11-16 11:53:44,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 87332 states and 93503 transitions. [2022-11-16 11:53:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-11-16 11:53:44,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:44,942 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:53:44,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:53:44,942 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1759449441, now seen corresponding path program 1 times [2022-11-16 11:53:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:44,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451990880] [2022-11-16 11:53:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-16 11:53:46,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:46,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451990880] [2022-11-16 11:53:46,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451990880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533322728] [2022-11-16 11:53:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:46,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:46,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:53:46,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b828ee7-4dbe-47c4-8003-40d3e7e5070e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:53:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:46,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:53:46,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 639 proven. 73 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-16 11:53:47,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1534 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-16 11:53:47,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533322728] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:53:47,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:53:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-16 11:53:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818043221] [2022-11-16 11:53:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:47,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:53:47,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:53:47,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:53:47,650 INFO L87 Difference]: Start difference. First operand 87332 states and 93503 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)