./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash e21c738f45b1a3d63c5b3dc7b524b0d900e7fe49b8a44619e9174a85389f0e7f --- 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-5e519f3 [2022-11-02 20:56:08,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:08,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:08,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:08,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:08,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:08,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:08,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:08,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:08,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:08,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:08,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:08,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:08,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:08,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:08,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:08,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:08,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:08,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:08,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:08,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:08,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:08,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:08,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:08,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:08,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:08,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:08,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:08,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:08,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:08,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:08,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:08,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:08,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:08,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:08,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:08,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:08,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:08,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:08,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:08,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:08,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:56:08,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:08,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:08,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:08,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:08,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:56:08,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:56:08,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:08,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:08,579 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:08,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:08,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:08,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:08,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:56:08,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:56:08,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:56:08,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:08,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:08,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:56:08,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:08,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:08,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:56:08,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:08,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:08,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:56:08,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:56:08,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:08,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:56:08,585 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:56:08,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:56:08,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:56:08,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e21c738f45b1a3d63c5b3dc7b524b0d900e7fe49b8a44619e9174a85389f0e7f [2022-11-02 20:56:08,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:08,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:08,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:08,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:08,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:09,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c [2022-11-02 20:56:09,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/data/baa459cde/9ec517a334324134b008518b7f18e393/FLAG4b47a171d [2022-11-02 20:56:09,848 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:09,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c [2022-11-02 20:56:09,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/data/baa459cde/9ec517a334324134b008518b7f18e393/FLAG4b47a171d [2022-11-02 20:56:10,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/data/baa459cde/9ec517a334324134b008518b7f18e393 [2022-11-02 20:56:10,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:10,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:10,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:10,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:10,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:10,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:10" (1/1) ... [2022-11-02 20:56:10,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:10, skipping insertion in model container [2022-11-02 20:56:10,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:10" (1/1) ... [2022-11-02 20:56:10,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:10,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:10,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c[1116,1129] [2022-11-02 20:56:10,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:10,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:10,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c[1116,1129] [2022-11-02 20:56:11,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:11,154 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:11,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11 WrapperNode [2022-11-02 20:56:11,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:11,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:11,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:11,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:11,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,461 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1864 [2022-11-02 20:56:11,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:11,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:11,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:11,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:11,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:11,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:11,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:11,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:11,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (1/1) ... [2022-11-02 20:56:11,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:56:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:11,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:11,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:56:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:56:12,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:12,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:15,656 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:15,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:15,673 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:56:15,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:15 BoogieIcfgContainer [2022-11-02 20:56:15,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:15,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:56:15,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:56:15,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:56:15,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:56:10" (1/3) ... [2022-11-02 20:56:15,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61737d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:15, skipping insertion in model container [2022-11-02 20:56:15,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:11" (2/3) ... [2022-11-02 20:56:15,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61737d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:56:15, skipping insertion in model container [2022-11-02 20:56:15,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:15" (3/3) ... [2022-11-02 20:56:15,688 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w16_d32_e0.c [2022-11-02 20:56:15,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:56:15,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:56:15,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:56:15,811 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;@2f03d353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:56:15,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:56:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 245 states have (on average 1.489795918367347) internal successors, (365), 246 states have internal predecessors, (365), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:56:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:56:15,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:15,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:15,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1491409808, now seen corresponding path program 1 times [2022-11-02 20:56:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400217597] [2022-11-02 20:56:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:56:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:16,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400217597] [2022-11-02 20:56:16,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400217597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:16,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:16,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:56:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513343653] [2022-11-02 20:56:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:56:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:56:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:16,909 INFO L87 Difference]: Start difference. First operand has 251 states, 245 states have (on average 1.489795918367347) internal successors, (365), 246 states have internal predecessors, (365), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:56:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:16,984 INFO L93 Difference]: Finished difference Result 496 states and 740 transitions. [2022-11-02 20:56:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:56:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 95 [2022-11-02 20:56:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:16,998 INFO L225 Difference]: With dead ends: 496 [2022-11-02 20:56:16,999 INFO L226 Difference]: Without dead ends: 247 [2022-11-02 20:56:17,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:56:17,007 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:17,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:56:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-02 20:56:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-11-02 20:56:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:56:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 364 transitions. [2022-11-02 20:56:17,068 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 364 transitions. Word has length 95 [2022-11-02 20:56:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:17,068 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 364 transitions. [2022-11-02 20:56:17,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:56:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 364 transitions. [2022-11-02 20:56:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:56:17,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:17,072 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:17,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:56:17,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -654443862, now seen corresponding path program 1 times [2022-11-02 20:56:17,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:17,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045387326] [2022-11-02 20:56:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:56:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:25,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045387326] [2022-11-02 20:56:25,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045387326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:25,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:25,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365481359] [2022-11-02 20:56:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:25,883 INFO L87 Difference]: Start difference. First operand 247 states and 364 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:26,309 INFO L93 Difference]: Finished difference Result 640 states and 949 transitions. [2022-11-02 20:56:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:56:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 95 [2022-11-02 20:56:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:26,316 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:56:26,316 INFO L226 Difference]: Without dead ends: 638 [2022-11-02 20:56:26,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:26,319 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2365 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:26,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 1571 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:56:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-02 20:56:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 319. [2022-11-02 20:56:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 314 states have (on average 1.480891719745223) internal successors, (465), 314 states have internal predecessors, (465), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:56:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 471 transitions. [2022-11-02 20:56:26,366 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 471 transitions. Word has length 95 [2022-11-02 20:56:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:26,370 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 471 transitions. [2022-11-02 20:56:26,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 471 transitions. [2022-11-02 20:56:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:56:26,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:26,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:26,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:56:26,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 232778984, now seen corresponding path program 1 times [2022-11-02 20:56:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:26,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117353007] [2022-11-02 20:56:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:56:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117353007] [2022-11-02 20:56:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117353007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:27,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:27,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:56:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112689434] [2022-11-02 20:56:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:56:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:56:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:56:27,486 INFO L87 Difference]: Start difference. First operand 319 states and 471 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:28,731 INFO L93 Difference]: Finished difference Result 882 states and 1307 transitions. [2022-11-02 20:56:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:28,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 95 [2022-11-02 20:56:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:28,736 INFO L225 Difference]: With dead ends: 882 [2022-11-02 20:56:28,736 INFO L226 Difference]: Without dead ends: 565 [2022-11-02 20:56:28,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:28,740 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 695 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:28,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1078 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:56:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-02 20:56:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 327. [2022-11-02 20:56:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 319 states have (on average 1.4733542319749215) internal successors, (470), 319 states have internal predecessors, (470), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2022-11-02 20:56:28,780 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 95 [2022-11-02 20:56:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:28,781 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2022-11-02 20:56:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:56:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2022-11-02 20:56:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:28,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:28,798 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:56:28,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:28,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash -788107687, now seen corresponding path program 1 times [2022-11-02 20:56:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600486362] [2022-11-02 20:56:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:28,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:56:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:56:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:56:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:32,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600486362] [2022-11-02 20:56:32,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600486362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:32,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121062036] [2022-11-02 20:56:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:32,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:32,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:32,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:32,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:56:34,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:56:35,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:56:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121062036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:35,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:56:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:56:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127778238] [2022-11-02 20:56:35,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:35,163 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:35,687 INFO L93 Difference]: Finished difference Result 1407 states and 2084 transitions. [2022-11-02 20:56:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:56:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:35,694 INFO L225 Difference]: With dead ends: 1407 [2022-11-02 20:56:35,694 INFO L226 Difference]: Without dead ends: 1090 [2022-11-02 20:56:35,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:56:35,704 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1649 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:35,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 1420 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:56:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-11-02 20:56:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 475. [2022-11-02 20:56:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.4775160599571735) internal successors, (690), 467 states have internal predecessors, (690), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 702 transitions. [2022-11-02 20:56:35,748 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 702 transitions. Word has length 346 [2022-11-02 20:56:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 702 transitions. [2022-11-02 20:56:35,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 702 transitions. [2022-11-02 20:56:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:35,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:35,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:56:35,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:35,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1214004055, now seen corresponding path program 1 times [2022-11-02 20:56:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:35,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956049703] [2022-11-02 20:56:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:56:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:56:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:56:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:56:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:56:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:56:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:49,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956049703] [2022-11-02 20:56:49,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956049703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:49,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:49,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:56:49,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086395752] [2022-11-02 20:56:49,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:49,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:56:49,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:56:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:56:49,998 INFO L87 Difference]: Start difference. First operand 475 states and 702 transitions. Second operand has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:52,664 INFO L93 Difference]: Finished difference Result 1630 states and 2414 transitions. [2022-11-02 20:56:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:56:52,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:56:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:52,670 INFO L225 Difference]: With dead ends: 1630 [2022-11-02 20:56:52,671 INFO L226 Difference]: Without dead ends: 1165 [2022-11-02 20:56:52,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:56:52,673 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 3216 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:52,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3216 Valid, 1964 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:56:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-02 20:56:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 507. [2022-11-02 20:56:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 499 states have (on average 1.4769539078156313) internal successors, (737), 499 states have internal predecessors, (737), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:56:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 749 transitions. [2022-11-02 20:56:52,734 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 749 transitions. Word has length 346 [2022-11-02 20:56:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:52,736 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 749 transitions. [2022-11-02 20:56:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:56:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 749 transitions. [2022-11-02 20:56:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:56:52,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:52,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:56:52,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:52,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash 968196181, now seen corresponding path program 1 times [2022-11-02 20:56:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799568491] [2022-11-02 20:56:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:57:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:57:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:57:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:57:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:57:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:57:17,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:17,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799568491] [2022-11-02 20:57:17,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799568491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:17,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:17,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:57:17,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264381271] [2022-11-02 20:57:17,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:17,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:57:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:57:17,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:17,398 INFO L87 Difference]: Start difference. First operand 507 states and 749 transitions. Second operand has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:20,229 INFO L93 Difference]: Finished difference Result 2133 states and 3160 transitions. [2022-11-02 20:57:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:57:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:57:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:20,238 INFO L225 Difference]: With dead ends: 2133 [2022-11-02 20:57:20,238 INFO L226 Difference]: Without dead ends: 1636 [2022-11-02 20:57:20,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:57:20,241 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 3979 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3979 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3979 Valid, 2201 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:57:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-11-02 20:57:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1052. [2022-11-02 20:57:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1041 states have (on average 1.4822286263208453) internal successors, (1543), 1041 states have internal predecessors, (1543), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:57:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1561 transitions. [2022-11-02 20:57:20,336 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1561 transitions. Word has length 346 [2022-11-02 20:57:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:20,337 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1561 transitions. [2022-11-02 20:57:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1561 transitions. [2022-11-02 20:57:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:57:20,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:20,345 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:57:20,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:57:20,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:20,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1395645481, now seen corresponding path program 1 times [2022-11-02 20:57:20,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:20,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353987067] [2022-11-02 20:57:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:57:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:57:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:57:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:57:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:57:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:57:43,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:43,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353987067] [2022-11-02 20:57:43,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353987067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:43,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108005037] [2022-11-02 20:57:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:43,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:43,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:43,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:57:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:45,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 3718 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:57:45,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:57:45,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108005037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:45,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:57:45,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:57:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604551578] [2022-11-02 20:57:45,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:57:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:57:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:57:45,716 INFO L87 Difference]: Start difference. First operand 1052 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:46,182 INFO L93 Difference]: Finished difference Result 1695 states and 2508 transitions. [2022-11-02 20:57:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:57:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:57:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:46,190 INFO L225 Difference]: With dead ends: 1695 [2022-11-02 20:57:46,191 INFO L226 Difference]: Without dead ends: 1198 [2022-11-02 20:57:46,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:57:46,194 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1582 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:46,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1500 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:57:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-11-02 20:57:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 561. [2022-11-02 20:57:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 553 states have (on average 1.4773960216998192) internal successors, (817), 553 states have internal predecessors, (817), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:57:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 829 transitions. [2022-11-02 20:57:46,225 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 829 transitions. Word has length 346 [2022-11-02 20:57:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:46,226 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 829 transitions. [2022-11-02 20:57:46,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:57:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 829 transitions. [2022-11-02 20:57:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:57:46,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:46,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:57:46,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:46,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:46,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -789430957, now seen corresponding path program 1 times [2022-11-02 20:57:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:46,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696340402] [2022-11-02 20:57:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696340402] [2022-11-02 20:58:03,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696340402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:03,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:03,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:58:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132143902] [2022-11-02 20:58:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:58:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:58:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:03,528 INFO L87 Difference]: Start difference. First operand 561 states and 829 transitions. Second operand has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:06,032 INFO L93 Difference]: Finished difference Result 2289 states and 3390 transitions. [2022-11-02 20:58:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:58:06,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:58:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:06,040 INFO L225 Difference]: With dead ends: 2289 [2022-11-02 20:58:06,040 INFO L226 Difference]: Without dead ends: 1738 [2022-11-02 20:58:06,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:58:06,043 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 4236 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4236 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:06,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4236 Valid, 2092 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:58:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2022-11-02 20:58:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1138. [2022-11-02 20:58:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1127 states have (on average 1.4818101153504881) internal successors, (1670), 1127 states have internal predecessors, (1670), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:58:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1688 transitions. [2022-11-02 20:58:06,090 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1688 transitions. Word has length 346 [2022-11-02 20:58:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:06,091 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1688 transitions. [2022-11-02 20:58:06,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.44444444444444) internal successors, (319), 9 states have internal predecessors, (319), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1688 transitions. [2022-11-02 20:58:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:58:06,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:06,096 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:58:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:58:06,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1334303531, now seen corresponding path program 1 times [2022-11-02 20:58:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:06,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701128953] [2022-11-02 20:58:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:08,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701128953] [2022-11-02 20:58:08,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701128953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:08,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753392225] [2022-11-02 20:58:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:08,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:08,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:08,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:08,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:58:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:09,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 3717 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:09,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:58:10,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753392225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:10,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:10,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:58:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698487455] [2022-11-02 20:58:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:58:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:58:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:10,399 INFO L87 Difference]: Start difference. First operand 1138 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:10,846 INFO L93 Difference]: Finished difference Result 1781 states and 2634 transitions. [2022-11-02 20:58:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:58:10,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:58:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:10,853 INFO L225 Difference]: With dead ends: 1781 [2022-11-02 20:58:10,854 INFO L226 Difference]: Without dead ends: 1230 [2022-11-02 20:58:10,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:10,859 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1553 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:10,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1533 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:58:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-11-02 20:58:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 593. [2022-11-02 20:58:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 585 states have (on average 1.476923076923077) internal successors, (864), 585 states have internal predecessors, (864), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:58:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 876 transitions. [2022-11-02 20:58:10,891 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 876 transitions. Word has length 346 [2022-11-02 20:58:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:10,892 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 876 transitions. [2022-11-02 20:58:10,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 876 transitions. [2022-11-02 20:58:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:58:10,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:10,896 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:58:10,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:58:11,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1175293359, now seen corresponding path program 1 times [2022-11-02 20:58:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:11,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108778129] [2022-11-02 20:58:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:13,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108778129] [2022-11-02 20:58:13,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108778129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477673121] [2022-11-02 20:58:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:13,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:13,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:13,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:13,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 3715 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:14,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:58:15,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477673121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:15,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:15,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:58:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313360033] [2022-11-02 20:58:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:58:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:58:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:15,185 INFO L87 Difference]: Start difference. First operand 593 states and 876 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:15,547 INFO L93 Difference]: Finished difference Result 1845 states and 2728 transitions. [2022-11-02 20:58:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:58:15,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:58:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:15,552 INFO L225 Difference]: With dead ends: 1845 [2022-11-02 20:58:15,553 INFO L226 Difference]: Without dead ends: 1262 [2022-11-02 20:58:15,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:15,555 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1518 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:15,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1573 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:58:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-11-02 20:58:15,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 625. [2022-11-02 20:58:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 617 states have (on average 1.4764991896272286) internal successors, (911), 617 states have internal predecessors, (911), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:58:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 923 transitions. [2022-11-02 20:58:15,581 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 923 transitions. Word has length 346 [2022-11-02 20:58:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:15,581 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 923 transitions. [2022-11-02 20:58:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 923 transitions. [2022-11-02 20:58:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:58:15,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:15,585 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:58:15,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:15,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:58:15,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 546709327, now seen corresponding path program 1 times [2022-11-02 20:58:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7906581] [2022-11-02 20:58:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:17,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:17,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7906581] [2022-11-02 20:58:17,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7906581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508734821] [2022-11-02 20:58:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:17,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:17,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:17,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:17,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:58:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:18,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 3714 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:19,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:58:19,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:19,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508734821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:19,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:19,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:58:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947758985] [2022-11-02 20:58:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:19,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:58:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:58:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:19,439 INFO L87 Difference]: Start difference. First operand 625 states and 923 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:19,862 INFO L93 Difference]: Finished difference Result 1891 states and 2794 transitions. [2022-11-02 20:58:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:58:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:58:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:19,868 INFO L225 Difference]: With dead ends: 1891 [2022-11-02 20:58:19,868 INFO L226 Difference]: Without dead ends: 1276 [2022-11-02 20:58:19,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:19,870 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1501 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:19,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1589 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:58:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-11-02 20:58:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 639. [2022-11-02 20:58:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 631 states have (on average 1.4754358161648178) internal successors, (931), 631 states have internal predecessors, (931), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:58:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 943 transitions. [2022-11-02 20:58:19,896 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 943 transitions. Word has length 346 [2022-11-02 20:58:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:19,896 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 943 transitions. [2022-11-02 20:58:19,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:58:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 943 transitions. [2022-11-02 20:58:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:58:19,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:19,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:58:19,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:58:20,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:20,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1714863923, now seen corresponding path program 1 times [2022-11-02 20:58:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:20,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350579020] [2022-11-02 20:58:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:22,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:22,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350579020] [2022-11-02 20:58:22,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350579020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:22,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260130336] [2022-11-02 20:58:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:22,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:22,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:22,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:58:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:23,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:58:23,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:24,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 25 proven. 55 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:26,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260130336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:26,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:26,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 19 [2022-11-02 20:58:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804580462] [2022-11-02 20:58:26,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:58:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:58:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:58:26,085 INFO L87 Difference]: Start difference. First operand 639 states and 943 transitions. Second operand has 19 states, 19 states have (on average 40.1578947368421) internal successors, (763), 19 states have internal predecessors, (763), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-02 20:58:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:26,897 INFO L93 Difference]: Finished difference Result 2380 states and 3522 transitions. [2022-11-02 20:58:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:58:26,898 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 40.1578947368421) internal successors, (763), 19 states have internal predecessors, (763), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 346 [2022-11-02 20:58:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:26,904 INFO L225 Difference]: With dead ends: 2380 [2022-11-02 20:58:26,905 INFO L226 Difference]: Without dead ends: 1751 [2022-11-02 20:58:26,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:58:26,908 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 4275 mSDsluCounter, 4577 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 5627 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:26,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 5627 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:58:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-11-02 20:58:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 777. [2022-11-02 20:58:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 769 states have (on average 1.4720416124837452) internal successors, (1132), 769 states have internal predecessors, (1132), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:58:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1144 transitions. [2022-11-02 20:58:26,942 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1144 transitions. Word has length 346 [2022-11-02 20:58:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:26,943 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1144 transitions. [2022-11-02 20:58:26,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 40.1578947368421) internal successors, (763), 19 states have internal predecessors, (763), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-02 20:58:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1144 transitions. [2022-11-02 20:58:26,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:58:26,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:26,948 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:58:26,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:27,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:58:27,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1714804341, now seen corresponding path program 1 times [2022-11-02 20:58:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:27,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157546430] [2022-11-02 20:58:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:58:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:58:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-02 20:58:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-02 20:58:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-11-02 20:58:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 68 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:41,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:41,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157546430] [2022-11-02 20:58:41,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157546430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:41,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169274174] [2022-11-02 20:58:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:41,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:41,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:41,295 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:41,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:46,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 3714 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:58:46,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 68 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:48,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 14 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 20:58:55,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169274174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:55,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:55,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 24 [2022-11-02 20:58:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598435860] [2022-11-02 20:58:55,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:58:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:58:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:58:55,408 INFO L87 Difference]: Start difference. First operand 777 states and 1144 transitions. Second operand has 24 states, 24 states have (on average 35.666666666666664) internal successors, (856), 24 states have internal predecessors, (856), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-02 20:59:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:01,780 INFO L93 Difference]: Finished difference Result 9329 states and 13789 transitions. [2022-11-02 20:59:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-02 20:59:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 35.666666666666664) internal successors, (856), 24 states have internal predecessors, (856), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 346 [2022-11-02 20:59:01,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:01,800 INFO L225 Difference]: With dead ends: 9329 [2022-11-02 20:59:01,800 INFO L226 Difference]: Without dead ends: 8700 [2022-11-02 20:59:01,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1136, Invalid=4716, Unknown=0, NotChecked=0, Total=5852 [2022-11-02 20:59:01,806 INFO L413 NwaCegarLoop]: 1886 mSDtfsCounter, 15431 mSDsluCounter, 15343 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15431 SdHoareTripleChecker+Valid, 17229 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:01,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15431 Valid, 17229 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 20:59:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2022-11-02 20:59:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 948. [2022-11-02 20:59:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 937 states have (on average 1.4706510138740663) internal successors, (1378), 937 states have internal predecessors, (1378), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:59:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1396 transitions. [2022-11-02 20:59:01,905 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1396 transitions. Word has length 346 [2022-11-02 20:59:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:01,906 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1396 transitions. [2022-11-02 20:59:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 35.666666666666664) internal successors, (856), 24 states have internal predecessors, (856), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-02 20:59:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1396 transitions. [2022-11-02 20:59:01,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:59:01,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:01,912 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:59:01,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:02,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db6d0c28-f542-4836-a115-611a99e9ea26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:59:02,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 193653449, now seen corresponding path program 1 times [2022-11-02 20:59:02,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:02,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253163688] [2022-11-02 20:59:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:02,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat