./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label36.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 04:12:13,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:12:13,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:12:13,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:12:13,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:12:13,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:12:13,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:12:13,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:12:13,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:12:13,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:12:13,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:12:13,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:12:13,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:12:13,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:12:13,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:12:13,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:12:13,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:12:13,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:12:13,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:12:13,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:12:13,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:12:13,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:12:13,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:12:13,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:12:13,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:12:13,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:12:13,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:12:13,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:12:13,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:12:13,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:12:13,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:12:13,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:12:13,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:12:13,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:12:13,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:12:13,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:12:13,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:12:13,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:12:13,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:12:13,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:12:13,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:12:13,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 04:12:13,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:12:13,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:12:13,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:12:13,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:12:13,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:12:13,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:12:13,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:12:13,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:12:13,607 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:12:13,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:12:13,608 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:12:13,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:12:13,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:12:13,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:12:13,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:12:13,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:12:13,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:12:13,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:12:13,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:12:13,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:12:13,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:12:13,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:12:13,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:12:13,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:12:13,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:12:13,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:12:13,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:12:13,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:12:13,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:12:13,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:12:13,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:12:13,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:12:13,613 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:12:13,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:12:13,614 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfcc97b5952aa72da47fe0e4e97f4617137d46f4db9024e30e3a5a5c97f7e95 [2022-11-23 04:12:13,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:12:14,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:12:14,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:12:14,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:12:14,020 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:12:14,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2022-11-23 04:12:17,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:12:18,133 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:12:18,135 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/sv-benchmarks/c/eca-rers2012/Problem12_label36.c [2022-11-23 04:12:18,178 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/data/7de9b3b0f/1e0848e39f1b4c6bb3bf9ec2a2a6d083/FLAGd46d5e572 [2022-11-23 04:12:18,200 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/data/7de9b3b0f/1e0848e39f1b4c6bb3bf9ec2a2a6d083 [2022-11-23 04:12:18,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:12:18,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:12:18,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:12:18,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:12:18,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:12:18,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:18" (1/1) ... [2022-11-23 04:12:18,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6628e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:18, skipping insertion in model container [2022-11-23 04:12:18,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:18" (1/1) ... [2022-11-23 04:12:18,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:12:18,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:12:18,775 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/sv-benchmarks/c/eca-rers2012/Problem12_label36.c[7066,7079] [2022-11-23 04:12:20,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:12:20,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:12:20,260 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/sv-benchmarks/c/eca-rers2012/Problem12_label36.c[7066,7079] [2022-11-23 04:12:20,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:12:20,965 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:12:20,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20 WrapperNode [2022-11-23 04:12:20,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:12:20,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:12:20,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:12:20,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:12:20,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,465 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-23 04:12:21,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:12:21,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:12:21,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:12:21,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:12:21,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:21,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:22,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:12:22,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:12:22,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:12:22,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:12:22,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (1/1) ... [2022-11-23 04:12:22,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:12:22,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:12:22,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:12:22,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:12:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:12:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:12:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:12:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:12:22,449 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:12:22,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:12:27,933 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:12:27,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:12:27,948 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 04:12:27,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:27 BoogieIcfgContainer [2022-11-23 04:12:27,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:12:27,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:12:27,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:12:27,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:12:27,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:18" (1/3) ... [2022-11-23 04:12:27,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b952ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:27, skipping insertion in model container [2022-11-23 04:12:27,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:20" (2/3) ... [2022-11-23 04:12:27,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b952ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:27, skipping insertion in model container [2022-11-23 04:12:27,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:27" (3/3) ... [2022-11-23 04:12:27,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36.c [2022-11-23 04:12:27,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:12:27,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 04:12:28,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:12:28,072 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;@50f51a8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:12:28,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 04:12:28,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:28,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 04:12:28,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:28,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:28,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2022-11-23 04:12:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:28,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42340349] [2022-11-23 04:12:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42340349] [2022-11-23 04:12:28,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42340349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:28,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:28,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:12:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191801779] [2022-11-23 04:12:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:28,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:12:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:12:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:12:28,643 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:33,950 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-11-23 04:12:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:33,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-23 04:12:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:33,978 INFO L225 Difference]: With dead ends: 2388 [2022-11-23 04:12:33,979 INFO L226 Difference]: Without dead ends: 1506 [2022-11-23 04:12:33,985 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 [2022-11-23 04:12:33,989 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 777 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:33,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 04:12:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-23 04:12:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-23 04:12:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-11-23 04:12:34,098 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 57 [2022-11-23 04:12:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:34,099 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-11-23 04:12:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-11-23 04:12:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 04:12:34,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:34,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:34,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:12:34,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:34,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1342956245, now seen corresponding path program 1 times [2022-11-23 04:12:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:34,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527565508] [2022-11-23 04:12:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:34,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:34,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527565508] [2022-11-23 04:12:34,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527565508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:34,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:34,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:34,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228798655] [2022-11-23 04:12:34,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:34,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:12:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:12:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:12:34,682 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:41,366 INFO L93 Difference]: Finished difference Result 4551 states and 7431 transitions. [2022-11-23 04:12:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:12:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-23 04:12:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:41,387 INFO L225 Difference]: With dead ends: 4551 [2022-11-23 04:12:41,387 INFO L226 Difference]: Without dead ends: 3010 [2022-11-23 04:12:41,391 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 [2022-11-23 04:12:41,392 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 692 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 4397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:41,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 658 Invalid, 4397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 04:12:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-11-23 04:12:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2022-11-23 04:12:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3418689723977386) internal successors, (4035), 3007 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4035 transitions. [2022-11-23 04:12:41,467 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4035 transitions. Word has length 128 [2022-11-23 04:12:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:41,467 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4035 transitions. [2022-11-23 04:12:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4035 transitions. [2022-11-23 04:12:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 04:12:41,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:41,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:41,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:12:41,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash -735503254, now seen corresponding path program 1 times [2022-11-23 04:12:41,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:41,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056387233] [2022-11-23 04:12:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:12:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056387233] [2022-11-23 04:12:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056387233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:41,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:41,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245580132] [2022-11-23 04:12:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:41,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:12:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:12:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:12:41,952 INFO L87 Difference]: Start difference. First operand 3008 states and 4035 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:48,491 INFO L93 Difference]: Finished difference Result 9769 states and 12895 transitions. [2022-11-23 04:12:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:12:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-11-23 04:12:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:48,523 INFO L225 Difference]: With dead ends: 9769 [2022-11-23 04:12:48,523 INFO L226 Difference]: Without dead ends: 6763 [2022-11-23 04:12:48,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:12:48,529 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2094 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 4841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:48,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 451 Invalid, 4841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 04:12:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-23 04:12:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-11-23 04:12:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.2877846790890268) internal successors, (8708), 6762 states have internal predecessors, (8708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8708 transitions. [2022-11-23 04:12:48,675 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8708 transitions. Word has length 166 [2022-11-23 04:12:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:48,676 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 8708 transitions. [2022-11-23 04:12:48,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8708 transitions. [2022-11-23 04:12:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-23 04:12:48,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:48,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 04:12:48,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 04:12:48,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 142351242, now seen corresponding path program 1 times [2022-11-23 04:12:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:48,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241306268] [2022-11-23 04:12:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-23 04:12:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:49,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241306268] [2022-11-23 04:12:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241306268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:49,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:49,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863658155] [2022-11-23 04:12:49,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:49,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:12:49,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:12:49,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:12:49,343 INFO L87 Difference]: Start difference. First operand 6763 states and 8708 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:54,640 INFO L93 Difference]: Finished difference Result 15816 states and 21400 transitions. [2022-11-23 04:12:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:12:54,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 269 [2022-11-23 04:12:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:54,674 INFO L225 Difference]: With dead ends: 15816 [2022-11-23 04:12:54,675 INFO L226 Difference]: Without dead ends: 9769 [2022-11-23 04:12:54,682 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 [2022-11-23 04:12:54,683 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 851 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:54,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 494 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-23 04:12:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2022-11-23 04:12:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2022-11-23 04:12:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2733975015359411) internal successors, (12436), 9766 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12436 transitions. [2022-11-23 04:12:54,891 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12436 transitions. Word has length 269 [2022-11-23 04:12:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:54,893 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12436 transitions. [2022-11-23 04:12:54,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12436 transitions. [2022-11-23 04:12:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-23 04:12:54,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:54,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 04:12:54,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1223052470, now seen corresponding path program 1 times [2022-11-23 04:12:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:54,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068282574] [2022-11-23 04:12:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-23 04:12:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:55,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068282574] [2022-11-23 04:12:55,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068282574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:55,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:55,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:12:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297530551] [2022-11-23 04:12:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:12:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:12:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:12:55,261 INFO L87 Difference]: Start difference. First operand 9767 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:12:59,353 INFO L93 Difference]: Finished difference Result 26291 states and 34162 transitions. [2022-11-23 04:12:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 272 [2022-11-23 04:12:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:12:59,407 INFO L225 Difference]: With dead ends: 26291 [2022-11-23 04:12:59,407 INFO L226 Difference]: Without dead ends: 17277 [2022-11-23 04:12:59,420 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 [2022-11-23 04:12:59,421 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 04:12:59,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 598 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 04:12:59,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-11-23 04:12:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 17277. [2022-11-23 04:12:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17277 states, 17276 states have (on average 1.1980203750868257) internal successors, (20697), 17276 states have internal predecessors, (20697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17277 states to 17277 states and 20697 transitions. [2022-11-23 04:12:59,755 INFO L78 Accepts]: Start accepts. Automaton has 17277 states and 20697 transitions. Word has length 272 [2022-11-23 04:12:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:12:59,757 INFO L495 AbstractCegarLoop]: Abstraction has 17277 states and 20697 transitions. [2022-11-23 04:12:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17277 states and 20697 transitions. [2022-11-23 04:12:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-23 04:12:59,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:12:59,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:59,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 04:12:59,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:12:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 481279939, now seen corresponding path program 1 times [2022-11-23 04:12:59,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:59,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903182556] [2022-11-23 04:12:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 41 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:13:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903182556] [2022-11-23 04:13:00,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903182556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:13:00,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398032999] [2022-11-23 04:13:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:00,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:13:00,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:13:00,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:13:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:00,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 04:13:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:13:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 04:13:01,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:13:01,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398032999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:01,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:13:01,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-23 04:13:01,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758612616] [2022-11-23 04:13:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:13:01,132 INFO L87 Difference]: Start difference. First operand 17277 states and 20697 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:05,874 INFO L93 Difference]: Finished difference Result 45066 states and 55029 transitions. [2022-11-23 04:13:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2022-11-23 04:13:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:05,937 INFO L225 Difference]: With dead ends: 45066 [2022-11-23 04:13:05,938 INFO L226 Difference]: Without dead ends: 28542 [2022-11-23 04:13:05,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:13:05,956 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 759 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:05,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 929 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 04:13:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2022-11-23 04:13:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 27040. [2022-11-23 04:13:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.2244905506860462) internal successors, (33109), 27039 states have internal predecessors, (33109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 33109 transitions. [2022-11-23 04:13:06,458 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 33109 transitions. Word has length 287 [2022-11-23 04:13:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:06,459 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 33109 transitions. [2022-11-23 04:13:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 33109 transitions. [2022-11-23 04:13:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-23 04:13:06,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:06,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:06,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:13:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:06,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:06,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:06,677 INFO L85 PathProgramCache]: Analyzing trace with hash 367196688, now seen corresponding path program 1 times [2022-11-23 04:13:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:06,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713532813] [2022-11-23 04:13:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:06,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-23 04:13:07,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:07,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713532813] [2022-11-23 04:13:07,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713532813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:07,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:07,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937745347] [2022-11-23 04:13:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:07,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:07,098 INFO L87 Difference]: Start difference. First operand 27040 states and 33109 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:11,339 INFO L93 Difference]: Finished difference Result 66845 states and 83607 transitions. [2022-11-23 04:13:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:11,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 297 [2022-11-23 04:13:11,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:11,434 INFO L225 Difference]: With dead ends: 66845 [2022-11-23 04:13:11,435 INFO L226 Difference]: Without dead ends: 40558 [2022-11-23 04:13:11,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:11,469 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 718 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:11,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1213 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2247 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 04:13:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40558 states. [2022-11-23 04:13:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40558 to 39056. [2022-11-23 04:13:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39056 states, 39055 states have (on average 1.190577390859045) internal successors, (46498), 39055 states have internal predecessors, (46498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 46498 transitions. [2022-11-23 04:13:12,219 INFO L78 Accepts]: Start accepts. Automaton has 39056 states and 46498 transitions. Word has length 297 [2022-11-23 04:13:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 39056 states and 46498 transitions. [2022-11-23 04:13:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 39056 states and 46498 transitions. [2022-11-23 04:13:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 04:13:12,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:12,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:12,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 04:13:12,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:12,229 INFO L85 PathProgramCache]: Analyzing trace with hash 38845213, now seen corresponding path program 1 times [2022-11-23 04:13:12,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:12,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877316413] [2022-11-23 04:13:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:12,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:13:12,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:12,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877316413] [2022-11-23 04:13:12,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877316413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:12,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:12,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331240978] [2022-11-23 04:13:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:12,572 INFO L87 Difference]: Start difference. First operand 39056 states and 46498 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:17,245 INFO L93 Difference]: Finished difference Result 97636 states and 116064 transitions. [2022-11-23 04:13:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 315 [2022-11-23 04:13:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:17,348 INFO L225 Difference]: With dead ends: 97636 [2022-11-23 04:13:17,348 INFO L226 Difference]: Without dead ends: 59333 [2022-11-23 04:13:17,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:17,378 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 637 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:17,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1237 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 04:13:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59333 states. [2022-11-23 04:13:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59333 to 57831. [2022-11-23 04:13:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57831 states, 57830 states have (on average 1.1749783849213211) internal successors, (67949), 57830 states have internal predecessors, (67949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57831 states to 57831 states and 67949 transitions. [2022-11-23 04:13:18,503 INFO L78 Accepts]: Start accepts. Automaton has 57831 states and 67949 transitions. Word has length 315 [2022-11-23 04:13:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:18,503 INFO L495 AbstractCegarLoop]: Abstraction has 57831 states and 67949 transitions. [2022-11-23 04:13:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 57831 states and 67949 transitions. [2022-11-23 04:13:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-23 04:13:18,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:18,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2022-11-23 04:13:18,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 04:13:18,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1561733167, now seen corresponding path program 1 times [2022-11-23 04:13:18,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:18,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294903051] [2022-11-23 04:13:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:18,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-23 04:13:18,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:18,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294903051] [2022-11-23 04:13:18,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294903051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:18,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:18,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471734701] [2022-11-23 04:13:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:18,872 INFO L87 Difference]: Start difference. First operand 57831 states and 67949 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:23,152 INFO L93 Difference]: Finished difference Result 127676 states and 149491 transitions. [2022-11-23 04:13:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:23,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2022-11-23 04:13:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:23,264 INFO L225 Difference]: With dead ends: 127676 [2022-11-23 04:13:23,264 INFO L226 Difference]: Without dead ends: 65341 [2022-11-23 04:13:23,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:23,307 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 717 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:23,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1345 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 04:13:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65341 states. [2022-11-23 04:13:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65341 to 61586. [2022-11-23 04:13:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61586 states, 61585 states have (on average 1.1574084598522367) internal successors, (71279), 61585 states have internal predecessors, (71279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61586 states to 61586 states and 71279 transitions. [2022-11-23 04:13:24,668 INFO L78 Accepts]: Start accepts. Automaton has 61586 states and 71279 transitions. Word has length 385 [2022-11-23 04:13:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:24,669 INFO L495 AbstractCegarLoop]: Abstraction has 61586 states and 71279 transitions. [2022-11-23 04:13:24,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 61586 states and 71279 transitions. [2022-11-23 04:13:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2022-11-23 04:13:24,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:24,685 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:13:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 04:13:24,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1405745305, now seen corresponding path program 1 times [2022-11-23 04:13:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227110797] [2022-11-23 04:13:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:24,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-23 04:13:25,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:25,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227110797] [2022-11-23 04:13:25,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227110797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:25,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:25,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666246274] [2022-11-23 04:13:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:25,222 INFO L87 Difference]: Start difference. First operand 61586 states and 71279 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:29,974 INFO L93 Difference]: Finished difference Result 147953 states and 173588 transitions. [2022-11-23 04:13:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 456 [2022-11-23 04:13:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:30,091 INFO L225 Difference]: With dead ends: 147953 [2022-11-23 04:13:30,091 INFO L226 Difference]: Without dead ends: 84116 [2022-11-23 04:13:30,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:30,118 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 711 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:30,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1294 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 04:13:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84116 states. [2022-11-23 04:13:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84116 to 73602. [2022-11-23 04:13:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73602 states, 73601 states have (on average 1.1427833860952976) internal successors, (84110), 73601 states have internal predecessors, (84110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73602 states to 73602 states and 84110 transitions. [2022-11-23 04:13:31,622 INFO L78 Accepts]: Start accepts. Automaton has 73602 states and 84110 transitions. Word has length 456 [2022-11-23 04:13:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:31,623 INFO L495 AbstractCegarLoop]: Abstraction has 73602 states and 84110 transitions. [2022-11-23 04:13:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 73602 states and 84110 transitions. [2022-11-23 04:13:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-23 04:13:31,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:31,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 04:13:31,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 04:13:31,669 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:31,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1710771782, now seen corresponding path program 1 times [2022-11-23 04:13:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:31,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815386490] [2022-11-23 04:13:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 04:13:32,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815386490] [2022-11-23 04:13:32,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815386490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:32,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:32,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:32,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110070587] [2022-11-23 04:13:32,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:32,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:32,299 INFO L87 Difference]: Start difference. First operand 73602 states and 84110 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:37,063 INFO L93 Difference]: Finished difference Result 156214 states and 178013 transitions. [2022-11-23 04:13:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 471 [2022-11-23 04:13:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:37,155 INFO L225 Difference]: With dead ends: 156214 [2022-11-23 04:13:37,155 INFO L226 Difference]: Without dead ends: 83365 [2022-11-23 04:13:37,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:37,198 INFO L413 NwaCegarLoop]: 1099 mSDtfsCounter, 727 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:37,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1107 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 04:13:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2022-11-23 04:13:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 81112. [2022-11-23 04:13:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81112 states, 81111 states have (on average 1.1223385237514023) internal successors, (91034), 81111 states have internal predecessors, (91034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81112 states to 81112 states and 91034 transitions. [2022-11-23 04:13:38,576 INFO L78 Accepts]: Start accepts. Automaton has 81112 states and 91034 transitions. Word has length 471 [2022-11-23 04:13:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:38,576 INFO L495 AbstractCegarLoop]: Abstraction has 81112 states and 91034 transitions. [2022-11-23 04:13:38,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:38,577 INFO L276 IsEmpty]: Start isEmpty. Operand 81112 states and 91034 transitions. [2022-11-23 04:13:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2022-11-23 04:13:38,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:38,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 04:13:38,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 04:13:38,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash -474570205, now seen corresponding path program 1 times [2022-11-23 04:13:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:38,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629005127] [2022-11-23 04:13:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 04:13:39,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:39,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629005127] [2022-11-23 04:13:39,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629005127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:39,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:13:39,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:13:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242658651] [2022-11-23 04:13:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:13:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:13:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:39,011 INFO L87 Difference]: Start difference. First operand 81112 states and 91034 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:13:44,242 INFO L93 Difference]: Finished difference Result 209535 states and 235867 transitions. [2022-11-23 04:13:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:13:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 529 [2022-11-23 04:13:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:13:44,400 INFO L225 Difference]: With dead ends: 209535 [2022-11-23 04:13:44,400 INFO L226 Difference]: Without dead ends: 129176 [2022-11-23 04:13:44,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:13:44,435 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 553 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:13:44,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 436 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 04:13:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129176 states. [2022-11-23 04:13:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129176 to 122417. [2022-11-23 04:13:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122417 states, 122416 states have (on average 1.1028215265978303) internal successors, (135003), 122416 states have internal predecessors, (135003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122417 states to 122417 states and 135003 transitions. [2022-11-23 04:13:46,375 INFO L78 Accepts]: Start accepts. Automaton has 122417 states and 135003 transitions. Word has length 529 [2022-11-23 04:13:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:13:46,376 INFO L495 AbstractCegarLoop]: Abstraction has 122417 states and 135003 transitions. [2022-11-23 04:13:46,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 122417 states and 135003 transitions. [2022-11-23 04:13:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-11-23 04:13:46,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:13:46,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-23 04:13:46,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 04:13:46,404 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:13:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:13:46,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1270475719, now seen corresponding path program 1 times [2022-11-23 04:13:46,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:13:46,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014753125] [2022-11-23 04:13:46,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:13:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 431 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:13:50,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:13:50,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014753125] [2022-11-23 04:13:50,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014753125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:13:50,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698892000] [2022-11-23 04:13:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:13:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:13:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:13:50,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:13:50,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:13:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:13:50,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 04:13:51,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:13:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-23 04:13:53,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:13:53,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698892000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:13:53,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:13:53,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-23 04:13:53,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534486431] [2022-11-23 04:13:53,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:13:53,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:13:53,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:13:53,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:13:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:13:53,607 INFO L87 Difference]: Start difference. First operand 122417 states and 135003 transitions. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:13:58,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:14:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:14:07,667 INFO L93 Difference]: Finished difference Result 374757 states and 414664 transitions. [2022-11-23 04:14:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:14:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 653 [2022-11-23 04:14:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:14:08,048 INFO L225 Difference]: With dead ends: 374757 [2022-11-23 04:14:08,049 INFO L226 Difference]: Without dead ends: 253093 [2022-11-23 04:14:08,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:14:08,105 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1701 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4456 mSolverCounterSat, 769 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 4456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:14:08,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 30 Invalid, 5226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 4456 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 04:14:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253093 states. [2022-11-23 04:14:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253093 to 230561. [2022-11-23 04:14:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230561 states, 230560 states have (on average 1.1057859125607217) internal successors, (254950), 230560 states have internal predecessors, (254950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230561 states to 230561 states and 254950 transitions. [2022-11-23 04:14:12,191 INFO L78 Accepts]: Start accepts. Automaton has 230561 states and 254950 transitions. Word has length 653 [2022-11-23 04:14:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:14:12,215 INFO L495 AbstractCegarLoop]: Abstraction has 230561 states and 254950 transitions. [2022-11-23 04:14:12,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 230561 states and 254950 transitions. [2022-11-23 04:14:12,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2022-11-23 04:14:12,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:14:12,270 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-23 04:14:12,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:14:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c62811-19f9-4b16-9849-600baea5e9f4/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 04:14:12,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:14:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:14:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash -661584709, now seen corresponding path program 1 times [2022-11-23 04:14:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:14:12,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135278117] [2022-11-23 04:14:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:14:12,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:14:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:14:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 897 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-11-23 04:14:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:14:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135278117] [2022-11-23 04:14:13,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135278117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:14:13,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:14:13,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:14:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428761898] [2022-11-23 04:14:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:14:13,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:14:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:14:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:14:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:14:13,979 INFO L87 Difference]: Start difference. First operand 230561 states and 254950 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:14:20,510 INFO L93 Difference]: Finished difference Result 518947 states and 575593 transitions. [2022-11-23 04:14:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:14:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 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 790 [2022-11-23 04:14:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:14:21,399 INFO L225 Difference]: With dead ends: 518947 [2022-11-23 04:14:21,399 INFO L226 Difference]: Without dead ends: 289139 [2022-11-23 04:14:21,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:14:21,477 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 690 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:14:21,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1251 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 04:14:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289139 states. [2022-11-23 04:14:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289139 to 279376. [2022-11-23 04:14:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279376 states, 279375 states have (on average 1.0963293064876958) internal successors, (306287), 279375 states have internal predecessors, (306287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279376 states to 279376 states and 306287 transitions. [2022-11-23 04:14:26,677 INFO L78 Accepts]: Start accepts. Automaton has 279376 states and 306287 transitions. Word has length 790 [2022-11-23 04:14:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:14:26,679 INFO L495 AbstractCegarLoop]: Abstraction has 279376 states and 306287 transitions. [2022-11-23 04:14:26,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 279376 states and 306287 transitions. [2022-11-23 04:14:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2022-11-23 04:14:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:14:26,815 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:14:26,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 04:14:26,815 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:14:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:14:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1563666593, now seen corresponding path program 1 times [2022-11-23 04:14:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:14:26,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615290324] [2022-11-23 04:14:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:14:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:14:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:14:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-23 04:14:27,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:14:27,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615290324] [2022-11-23 04:14:27,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615290324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:14:27,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:14:27,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:14:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368560582] [2022-11-23 04:14:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:14:27,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:14:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:14:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:14:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:14:27,702 INFO L87 Difference]: Start difference. First operand 279376 states and 306287 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:14:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:14:34,807 INFO L93 Difference]: Finished difference Result 610569 states and 672440 transitions. [2022-11-23 04:14:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:14:34,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 858 [2022-11-23 04:14:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:14:35,348 INFO L225 Difference]: With dead ends: 610569 [2022-11-23 04:14:35,349 INFO L226 Difference]: Without dead ends: 331946 [2022-11-23 04:14:35,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:14:35,532 INFO L413 NwaCegarLoop]: 1233 mSDtfsCounter, 471 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 04:14:35,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1241 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 04:14:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331946 states.