./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/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_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/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 32bit --witnessprinter.graph.data.programhash d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- 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 20:30:20,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:30:20,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:30:20,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:30:20,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:30:20,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:30:20,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:30:20,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:30:20,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:30:20,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:30:20,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:30:20,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:30:20,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:30:20,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:30:20,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:30:20,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:30:20,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:30:20,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:30:20,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:30:20,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:30:20,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:30:20,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:30:20,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:30:20,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:30:20,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:30:20,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:30:20,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:30:20,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:30:20,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:30:20,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:30:20,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:30:20,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:30:20,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:30:20,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:30:20,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:30:20,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:30:20,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:30:20,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:30:20,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:30:20,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:30:20,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:30:20,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:30:20,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:30:20,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:30:20,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:30:20,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:30:20,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:30:20,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:30:20,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:30:20,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:30:20,692 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:30:20,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:30:20,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:30:20,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:30:20,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:30:20,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:30:20,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:30:20,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:30:20,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:30:20,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:30:20,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:30:20,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:30:20,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:30:20,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:30:20,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:30:20,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:30:20,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:30:20,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:30:20,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:30:20,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:30:20,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:30:20,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:30:20,699 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:30:20,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:30:20,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:30:20,700 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_efa1b84c-bc48-414d-9fda-eabae5869bb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2022-11-02 20:30:21,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:30:21,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:30:21,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:30:21,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:30:21,117 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:30:21,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-11-02 20:30:21,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/data/fee92922f/02a4892c0f94482f9c4dac310d9d093b/FLAG6c6687998 [2022-11-02 20:30:22,102 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:30:22,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-11-02 20:30:22,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/data/fee92922f/02a4892c0f94482f9c4dac310d9d093b/FLAG6c6687998 [2022-11-02 20:30:22,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/data/fee92922f/02a4892c0f94482f9c4dac310d9d093b [2022-11-02 20:30:22,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:30:22,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:30:22,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:30:22,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:30:22,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:30:22,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:22" (1/1) ... [2022-11-02 20:30:22,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8d0c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:22, skipping insertion in model container [2022-11-02 20:30:22,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:22" (1/1) ... [2022-11-02 20:30:22,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:30:22,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:30:22,962 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_efa1b84c-bc48-414d-9fda-eabae5869bb4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-11-02 20:30:23,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:30:23,023 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:30:23,145 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_efa1b84c-bc48-414d-9fda-eabae5869bb4/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-11-02 20:30:23,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:30:23,200 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:30:23,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23 WrapperNode [2022-11-02 20:30:23,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:30:23,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:30:23,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:30:23,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:30:23,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,359 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 883 [2022-11-02 20:30:23,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:30:23,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:30:23,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:30:23,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:30:23,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:30:23,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:30:23,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:30:23,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:30:23,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (1/1) ... [2022-11-02 20:30:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:30:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:23,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:30:23,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:30:23,661 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-02 20:30:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-02 20:30:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:30:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-02 20:30:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-02 20:30:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 20:30:23,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 20:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-02 20:30:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-02 20:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 20:30:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 20:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 20:30:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 20:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-02 20:30:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-02 20:30:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 20:30:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 20:30:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-02 20:30:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-02 20:30:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 20:30:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 20:30:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 20:30:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 20:30:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 20:30:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 20:30:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 20:30:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 20:30:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 20:30:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 20:30:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 20:30:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 20:30:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 20:30:23,666 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 20:30:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 20:30:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 20:30:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 20:30:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 20:30:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 20:30:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 20:30:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 20:30:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 20:30:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:30:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-02 20:30:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-02 20:30:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 20:30:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 20:30:23,668 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 20:30:23,668 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 20:30:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 20:30:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 20:30:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-02 20:30:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-02 20:30:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:30:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:30:23,693 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 20:30:23,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 20:30:23,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:30:23,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:30:25,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:30:25,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:30:25,775 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:30:25,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:25 BoogieIcfgContainer [2022-11-02 20:30:25,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:30:25,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:30:25,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:30:25,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:30:25,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:30:22" (1/3) ... [2022-11-02 20:30:25,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e6597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:25, skipping insertion in model container [2022-11-02 20:30:25,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:23" (2/3) ... [2022-11-02 20:30:25,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e6597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:25, skipping insertion in model container [2022-11-02 20:30:25,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:25" (3/3) ... [2022-11-02 20:30:25,800 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2022-11-02 20:30:25,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:30:25,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:30:25,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:30:25,920 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;@3895841c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:30:25,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:30:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 609 states, 479 states have (on average 1.6910229645093946) internal successors, (810), 499 states have internal predecessors, (810), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-02 20:30:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 20:30:25,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:25,961 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:25,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 319917727, now seen corresponding path program 1 times [2022-11-02 20:30:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:25,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918673979] [2022-11-02 20:30:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:30:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:30:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:30:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:30:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:30:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:30:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:30:27,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:27,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918673979] [2022-11-02 20:30:27,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918673979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:27,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837980512] [2022-11-02 20:30:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:27,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:27,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:27,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:27,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:30:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:30:27,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:30:27,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837980512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:27,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:27,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2022-11-02 20:30:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191398796] [2022-11-02 20:30:27,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:30:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:27,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:30:27,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:30:27,667 INFO L87 Difference]: Start difference. First operand has 609 states, 479 states have (on average 1.6910229645093946) internal successors, (810), 499 states have internal predecessors, (810), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:27,833 INFO L93 Difference]: Finished difference Result 1196 states and 2011 transitions. [2022-11-02 20:30:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:30:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-11-02 20:30:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:27,863 INFO L225 Difference]: With dead ends: 1196 [2022-11-02 20:30:27,863 INFO L226 Difference]: Without dead ends: 599 [2022-11-02 20:30:27,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:30:27,889 INFO L413 NwaCegarLoop]: 1002 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, 1002 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 20:30:27,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:30:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-02 20:30:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-11-02 20:30:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.673728813559322) internal successors, (790), 490 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-02 20:30:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 991 transitions. [2022-11-02 20:30:28,045 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 991 transitions. Word has length 83 [2022-11-02 20:30:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:28,047 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 991 transitions. [2022-11-02 20:30:28,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 991 transitions. [2022-11-02 20:30:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-02 20:30:28,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:28,057 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:28,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:30:28,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash 618600822, now seen corresponding path program 1 times [2022-11-02 20:30:28,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:28,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289373580] [2022-11-02 20:30:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:28,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:30:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:30:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:30:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:30:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:30:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:30:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:30:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:30:29,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:29,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289373580] [2022-11-02 20:30:29,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289373580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:29,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22669873] [2022-11-02 20:30:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:29,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:29,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:30:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:29,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:29,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 20:30:29,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22669873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:29,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:29,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-02 20:30:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621455515] [2022-11-02 20:30:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:29,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:30:29,717 INFO L87 Difference]: Start difference. First operand 599 states and 991 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:29,977 INFO L93 Difference]: Finished difference Result 1199 states and 1990 transitions. [2022-11-02 20:30:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:30:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-11-02 20:30:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:29,988 INFO L225 Difference]: With dead ends: 1199 [2022-11-02 20:30:29,988 INFO L226 Difference]: Without dead ends: 608 [2022-11-02 20:30:29,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:30:29,996 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 26 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:29,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2919 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-02 20:30:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-02 20:30:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 480 states have (on average 1.675) internal successors, (804), 498 states have internal predecessors, (804), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-02 20:30:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1005 transitions. [2022-11-02 20:30:30,052 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1005 transitions. Word has length 99 [2022-11-02 20:30:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:30,053 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1005 transitions. [2022-11-02 20:30:30,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1005 transitions. [2022-11-02 20:30:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 20:30:30,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:30,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:30,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:30,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:30,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1507409344, now seen corresponding path program 1 times [2022-11-02 20:30:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:30,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171123716] [2022-11-02 20:30:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 20:30:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:30:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:30:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 20:30:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:30:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 20:30:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:30:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:31,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171123716] [2022-11-02 20:30:31,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171123716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:31,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574844252] [2022-11-02 20:30:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:31,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:31,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:30:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:31,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:30:31,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:31,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574844252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:31,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:31,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-02 20:30:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131554719] [2022-11-02 20:30:31,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:30:31,865 INFO L87 Difference]: Start difference. First operand 608 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:32,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:32,233 INFO L93 Difference]: Finished difference Result 1251 states and 2085 transitions. [2022-11-02 20:30:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:30:32,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-11-02 20:30:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:32,246 INFO L225 Difference]: With dead ends: 1251 [2022-11-02 20:30:32,246 INFO L226 Difference]: Without dead ends: 653 [2022-11-02 20:30:32,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:32,256 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 170 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:32,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2763 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:30:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-02 20:30:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2022-11-02 20:30:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 524 states have (on average 1.6946564885496183) internal successors, (888), 542 states have internal predecessors, (888), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-02 20:30:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1089 transitions. [2022-11-02 20:30:32,344 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1089 transitions. Word has length 101 [2022-11-02 20:30:32,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:32,345 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1089 transitions. [2022-11-02 20:30:32,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1089 transitions. [2022-11-02 20:30:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 20:30:32,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:32,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:32,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:32,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:30:32,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash 809213068, now seen corresponding path program 1 times [2022-11-02 20:30:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:32,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437866939] [2022-11-02 20:30:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:32,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:30:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:30:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:30:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:30:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:30:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:30:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:30:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437866939] [2022-11-02 20:30:33,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437866939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576824790] [2022-11-02 20:30:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:33,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:33,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:33,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:30:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:33,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:30:33,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:30:33,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576824790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:33,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:33,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:30:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316839804] [2022-11-02 20:30:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:30:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:30:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:33,991 INFO L87 Difference]: Start difference. First operand 653 states and 1089 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:34,193 INFO L93 Difference]: Finished difference Result 1329 states and 2218 transitions. [2022-11-02 20:30:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-02 20:30:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:34,201 INFO L225 Difference]: With dead ends: 1329 [2022-11-02 20:30:34,202 INFO L226 Difference]: Without dead ends: 686 [2022-11-02 20:30:34,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:30:34,208 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 118 mSDsluCounter, 4812 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5797 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:34,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5797 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-02 20:30:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 666. [2022-11-02 20:30:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 534 states have (on average 1.6910112359550562) internal successors, (903), 554 states have internal predecessors, (903), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-02 20:30:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1110 transitions. [2022-11-02 20:30:34,251 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1110 transitions. Word has length 103 [2022-11-02 20:30:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:34,251 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1110 transitions. [2022-11-02 20:30:34,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1110 transitions. [2022-11-02 20:30:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 20:30:34,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:34,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:34,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:34,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:34,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash -6785947, now seen corresponding path program 1 times [2022-11-02 20:30:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:34,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929364968] [2022-11-02 20:30:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:34,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:30:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:30:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:30:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:30:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:30:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:30:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:30:35,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929364968] [2022-11-02 20:30:35,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929364968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267000619] [2022-11-02 20:30:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:35,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:35,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:30:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:30:35,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:30:35,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:35,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267000619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:30:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590358715] [2022-11-02 20:30:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:35,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:30:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:35,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:30:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:35,884 INFO L87 Difference]: Start difference. First operand 666 states and 1110 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:36,088 INFO L93 Difference]: Finished difference Result 1349 states and 2249 transitions. [2022-11-02 20:30:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-02 20:30:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:36,097 INFO L225 Difference]: With dead ends: 1349 [2022-11-02 20:30:36,098 INFO L226 Difference]: Without dead ends: 695 [2022-11-02 20:30:36,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:30:36,104 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 129 mSDsluCounter, 4805 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5791 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:36,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5791 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-02 20:30:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 666. [2022-11-02 20:30:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 534 states have (on average 1.6910112359550562) internal successors, (903), 554 states have internal predecessors, (903), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-02 20:30:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1110 transitions. [2022-11-02 20:30:36,183 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1110 transitions. Word has length 104 [2022-11-02 20:30:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:36,184 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1110 transitions. [2022-11-02 20:30:36,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:36,185 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1110 transitions. [2022-11-02 20:30:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 20:30:36,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:36,189 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:36,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:36,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2133654803, now seen corresponding path program 1 times [2022-11-02 20:30:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:36,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233150495] [2022-11-02 20:30:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:30:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 20:30:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:30:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:30:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 20:30:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:30:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:30:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:30:36,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:36,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233150495] [2022-11-02 20:30:36,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233150495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:36,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29137369] [2022-11-02 20:30:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:36,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:37,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:30:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:37,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:37,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:30:37,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:37,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29137369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:37,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:37,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-02 20:30:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267640872] [2022-11-02 20:30:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:30:37,467 INFO L87 Difference]: Start difference. First operand 666 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:37,583 INFO L93 Difference]: Finished difference Result 1335 states and 2226 transitions. [2022-11-02 20:30:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:30:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-11-02 20:30:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:37,597 INFO L225 Difference]: With dead ends: 1335 [2022-11-02 20:30:37,598 INFO L226 Difference]: Without dead ends: 677 [2022-11-02 20:30:37,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:30:37,626 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 20 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:37,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2920 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-11-02 20:30:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 675. [2022-11-02 20:30:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-11-02 20:30:37,670 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 104 [2022-11-02 20:30:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:37,670 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-11-02 20:30:37,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-11-02 20:30:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-02 20:30:37,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:37,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:37,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:30:37,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -115999280, now seen corresponding path program 1 times [2022-11-02 20:30:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975233113] [2022-11-02 20:30:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:30:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:30:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:30:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 20:30:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 20:30:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:30:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:30:38,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:38,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975233113] [2022-11-02 20:30:38,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975233113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172269286] [2022-11-02 20:30:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:38,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:38,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:30:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:39,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:30:39,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:30:39,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:39,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172269286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:39,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:39,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-02 20:30:39,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730120115] [2022-11-02 20:30:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:39,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:30:39,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:30:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:39,248 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:39,455 INFO L93 Difference]: Finished difference Result 1358 states and 2252 transitions. [2022-11-02 20:30:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-11-02 20:30:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:39,465 INFO L225 Difference]: With dead ends: 1358 [2022-11-02 20:30:39,465 INFO L226 Difference]: Without dead ends: 706 [2022-11-02 20:30:39,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:30:39,471 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 140 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:39,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5756 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-02 20:30:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 675. [2022-11-02 20:30:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-11-02 20:30:39,514 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 105 [2022-11-02 20:30:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:39,515 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-11-02 20:30:39,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-11-02 20:30:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 20:30:39,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:39,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:39,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:39,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1962629019, now seen corresponding path program 1 times [2022-11-02 20:30:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57532556] [2022-11-02 20:30:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:39,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:30:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:30:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 20:30:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 20:30:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-02 20:30:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:40,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57532556] [2022-11-02 20:30:40,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57532556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:40,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934069192] [2022-11-02 20:30:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:40,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:40,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:40,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:40,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:30:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:30:40,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:30:40,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:40,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934069192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:40,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:40,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-02 20:30:40,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218233361] [2022-11-02 20:30:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:30:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:30:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:40,768 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:41,107 INFO L93 Difference]: Finished difference Result 1361 states and 2256 transitions. [2022-11-02 20:30:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:41,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-11-02 20:30:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:41,116 INFO L225 Difference]: With dead ends: 1361 [2022-11-02 20:30:41,116 INFO L226 Difference]: Without dead ends: 709 [2022-11-02 20:30:41,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:30:41,123 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 140 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6696 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:41,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6696 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-02 20:30:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 675. [2022-11-02 20:30:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-11-02 20:30:41,166 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 89 [2022-11-02 20:30:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:41,167 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-11-02 20:30:41,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-11-02 20:30:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-02 20:30:41,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:41,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:41,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:41,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1876427470, now seen corresponding path program 1 times [2022-11-02 20:30:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098178184] [2022-11-02 20:30:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:30:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 20:30:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 20:30:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:30:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:30:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098178184] [2022-11-02 20:30:41,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098178184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957320115] [2022-11-02 20:30:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:41,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:41,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:41,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:30:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:42,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:30:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:30:42,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:42,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957320115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:42,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:42,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-02 20:30:42,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475838150] [2022-11-02 20:30:42,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:30:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:30:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:42,433 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:42,739 INFO L93 Difference]: Finished difference Result 1361 states and 2256 transitions. [2022-11-02 20:30:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2022-11-02 20:30:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:42,749 INFO L225 Difference]: With dead ends: 1361 [2022-11-02 20:30:42,749 INFO L226 Difference]: Without dead ends: 709 [2022-11-02 20:30:42,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:30:42,757 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 150 mSDsluCounter, 5712 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6684 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:42,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6684 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-02 20:30:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 675. [2022-11-02 20:30:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-11-02 20:30:42,807 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 90 [2022-11-02 20:30:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:42,808 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-11-02 20:30:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-11-02 20:30:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:30:42,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:42,813 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:42,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:30:43,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 626488640, now seen corresponding path program 1 times [2022-11-02 20:30:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:43,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026621220] [2022-11-02 20:30:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:30:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:30:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:30:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:30:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:30:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:43,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026621220] [2022-11-02 20:30:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026621220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100228501] [2022-11-02 20:30:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:43,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:43,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:43,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:30:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:30:43,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:30:43,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:43,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100228501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:43,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:43,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-02 20:30:43,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605889533] [2022-11-02 20:30:43,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:43,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:30:43,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:30:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:43,981 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:44,283 INFO L93 Difference]: Finished difference Result 1352 states and 2241 transitions. [2022-11-02 20:30:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2022-11-02 20:30:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:44,291 INFO L225 Difference]: With dead ends: 1352 [2022-11-02 20:30:44,292 INFO L226 Difference]: Without dead ends: 700 [2022-11-02 20:30:44,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:30:44,297 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 160 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6672 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:44,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6672 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-02 20:30:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 675. [2022-11-02 20:30:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2022-11-02 20:30:44,334 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 91 [2022-11-02 20:30:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:44,335 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2022-11-02 20:30:44,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2022-11-02 20:30:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:30:44,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:44,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:44,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:30:44,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash 351909790, now seen corresponding path program 1 times [2022-11-02 20:30:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579284367] [2022-11-02 20:30:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 20:30:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 20:30:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:30:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:30:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:30:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:30:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:44,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579284367] [2022-11-02 20:30:44,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579284367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:44,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570888069] [2022-11-02 20:30:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:44,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:44,856 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:44,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:30:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:45,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:30:45,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:45,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570888069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:45,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:45,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-02 20:30:45,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935735693] [2022-11-02 20:30:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:45,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:30:45,227 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:45,329 INFO L93 Difference]: Finished difference Result 1316 states and 2188 transitions. [2022-11-02 20:30:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:30:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-02 20:30:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:45,336 INFO L225 Difference]: With dead ends: 1316 [2022-11-02 20:30:45,336 INFO L226 Difference]: Without dead ends: 675 [2022-11-02 20:30:45,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:30:45,341 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 35 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:45,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2918 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-11-02 20:30:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-11-02 20:30:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6734317343173433) internal successors, (907), 562 states have internal predecessors, (907), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-11-02 20:30:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1113 transitions. [2022-11-02 20:30:45,374 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1113 transitions. Word has length 91 [2022-11-02 20:30:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:45,374 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1113 transitions. [2022-11-02 20:30:45,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1113 transitions. [2022-11-02 20:30:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 20:30:45,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:45,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:45,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:45,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1675153830, now seen corresponding path program 1 times [2022-11-02 20:30:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120228140] [2022-11-02 20:30:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-02 20:30:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:30:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:30:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:30:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-02 20:30:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:30:46,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120228140] [2022-11-02 20:30:46,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120228140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963123617] [2022-11-02 20:30:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:46,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:46,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:46,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:30:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:46,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:46,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:30:46,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:46,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963123617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:46,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:46,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-02 20:30:46,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258499561] [2022-11-02 20:30:46,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:46,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:46,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:46,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:30:46,643 INFO L87 Difference]: Start difference. First operand 675 states and 1113 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:46,883 INFO L93 Difference]: Finished difference Result 1312 states and 2179 transitions. [2022-11-02 20:30:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:30:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2022-11-02 20:30:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:46,891 INFO L225 Difference]: With dead ends: 1312 [2022-11-02 20:30:46,891 INFO L226 Difference]: Without dead ends: 729 [2022-11-02 20:30:46,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:30:46,897 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 241 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:46,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2752 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-11-02 20:30:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 720. [2022-11-02 20:30:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 586 states have (on average 1.6911262798634812) internal successors, (991), 606 states have internal predecessors, (991), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-11-02 20:30:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1196 transitions. [2022-11-02 20:30:46,933 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1196 transitions. Word has length 108 [2022-11-02 20:30:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:46,935 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1196 transitions. [2022-11-02 20:30:46,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:30:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1196 transitions. [2022-11-02 20:30:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:30:46,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:46,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:46,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:30:47,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:47,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:47,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1863512470, now seen corresponding path program 1 times [2022-11-02 20:30:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:47,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633605347] [2022-11-02 20:30:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:30:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:30:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:30:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:30:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:30:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:47,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633605347] [2022-11-02 20:30:47,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633605347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270442168] [2022-11-02 20:30:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:47,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:47,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:47,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:30:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:47,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:30:47,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:48,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270442168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:48,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:48,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-02 20:30:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970648292] [2022-11-02 20:30:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:30:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:30:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:30:48,035 INFO L87 Difference]: Start difference. First operand 720 states and 1196 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:48,227 INFO L93 Difference]: Finished difference Result 1338 states and 2215 transitions. [2022-11-02 20:30:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-11-02 20:30:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:48,234 INFO L225 Difference]: With dead ends: 1338 [2022-11-02 20:30:48,234 INFO L226 Difference]: Without dead ends: 755 [2022-11-02 20:30:48,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:30:48,240 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 115 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:48,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5756 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-02 20:30:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 733. [2022-11-02 20:30:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-11-02 20:30:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2022-11-02 20:30:48,276 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 93 [2022-11-02 20:30:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:48,277 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2022-11-02 20:30:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2022-11-02 20:30:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:30:48,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:48,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:48,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:48,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:30:48,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1675543831, now seen corresponding path program 1 times [2022-11-02 20:30:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:48,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918773134] [2022-11-02 20:30:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:30:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:30:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:30:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:30:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:30:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918773134] [2022-11-02 20:30:48,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918773134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464398217] [2022-11-02 20:30:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:48,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:48,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:48,765 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:48,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:30:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:30:49,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:49,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:49,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464398217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:49,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:49,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-02 20:30:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731592610] [2022-11-02 20:30:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:30:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:30:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:30:49,223 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:49,395 INFO L93 Difference]: Finished difference Result 1347 states and 2229 transitions. [2022-11-02 20:30:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:49,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-11-02 20:30:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:49,403 INFO L225 Difference]: With dead ends: 1347 [2022-11-02 20:30:49,403 INFO L226 Difference]: Without dead ends: 764 [2022-11-02 20:30:49,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:30:49,409 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 126 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5744 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:49,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5744 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:30:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-02 20:30:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 733. [2022-11-02 20:30:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-11-02 20:30:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2022-11-02 20:30:49,445 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 94 [2022-11-02 20:30:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2022-11-02 20:30:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2022-11-02 20:30:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:30:49,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:49,451 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:49,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:49,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:30:49,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash -627689623, now seen corresponding path program 1 times [2022-11-02 20:30:49,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:49,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48815151] [2022-11-02 20:30:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:49,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:30:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:30:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:30:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:30:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:30:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:49,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48815151] [2022-11-02 20:30:49,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48815151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:49,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982846118] [2022-11-02 20:30:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:49,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:49,997 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:30:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:50,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:30:50,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:30:50,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:50,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982846118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:50,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:50,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-02 20:30:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824412899] [2022-11-02 20:30:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:50,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:30:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:30:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:30:50,494 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:50,757 INFO L93 Difference]: Finished difference Result 1350 states and 2232 transitions. [2022-11-02 20:30:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-11-02 20:30:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:50,764 INFO L225 Difference]: With dead ends: 1350 [2022-11-02 20:30:50,765 INFO L226 Difference]: Without dead ends: 767 [2022-11-02 20:30:50,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:30:50,773 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 138 mSDsluCounter, 5700 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6667 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:50,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6667 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-02 20:30:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 733. [2022-11-02 20:30:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-11-02 20:30:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2022-11-02 20:30:50,811 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 94 [2022-11-02 20:30:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:50,812 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2022-11-02 20:30:50,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:30:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2022-11-02 20:30:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:30:50,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:50,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:30:50,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:30:51,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1789623721, now seen corresponding path program 1 times [2022-11-02 20:30:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120147643] [2022-11-02 20:30:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:30:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:30:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:30:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:30:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:30:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:30:51,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:51,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120147643] [2022-11-02 20:30:51,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120147643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:51,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929252405] [2022-11-02 20:30:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:51,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:51,333 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:51,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:30:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:51,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:30:51,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:30:51,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:51,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929252405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:51,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:51,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-02 20:30:51,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197590664] [2022-11-02 20:30:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:51,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:30:51,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:51,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:30:51,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:30:51,775 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:51,855 INFO L93 Difference]: Finished difference Result 1392 states and 2311 transitions. [2022-11-02 20:30:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:30:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-11-02 20:30:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:51,862 INFO L225 Difference]: With dead ends: 1392 [2022-11-02 20:30:51,862 INFO L226 Difference]: Without dead ends: 733 [2022-11-02 20:30:51,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:30:51,867 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 10 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2920 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:51,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2920 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:30:51,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-02 20:30:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2022-11-02 20:30:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6828859060402686) internal successors, (1003), 618 states have internal predecessors, (1003), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-11-02 20:30:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1212 transitions. [2022-11-02 20:30:51,902 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1212 transitions. Word has length 94 [2022-11-02 20:30:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:51,902 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1212 transitions. [2022-11-02 20:30:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-02 20:30:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1212 transitions. [2022-11-02 20:30:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 20:30:51,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:51,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:51,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:52,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:30:52,122 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash 515743823, now seen corresponding path program 1 times [2022-11-02 20:30:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:52,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532961525] [2022-11-02 20:30:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:30:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:30:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:30:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-02 20:30:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:30:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:30:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:52,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532961525] [2022-11-02 20:30:52,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532961525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:52,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484703211] [2022-11-02 20:30:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:52,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:30:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:30:53,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 20:30:53,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:53,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484703211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:53,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:53,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-02 20:30:53,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700262949] [2022-11-02 20:30:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:53,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:30:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:30:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:30:53,183 INFO L87 Difference]: Start difference. First operand 733 states and 1212 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:53,445 INFO L93 Difference]: Finished difference Result 1341 states and 2215 transitions. [2022-11-02 20:30:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:30:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2022-11-02 20:30:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:53,452 INFO L225 Difference]: With dead ends: 1341 [2022-11-02 20:30:53,453 INFO L226 Difference]: Without dead ends: 758 [2022-11-02 20:30:53,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:30:53,458 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 148 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6637 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:53,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6637 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:30:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-02 20:30:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 733. [2022-11-02 20:30:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6828859060402686) internal successors, (1003), 618 states have internal predecessors, (1003), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-11-02 20:30:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1212 transitions. [2022-11-02 20:30:53,493 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1212 transitions. Word has length 111 [2022-11-02 20:30:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:30:53,494 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1212 transitions. [2022-11-02 20:30:53,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:30:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1212 transitions. [2022-11-02 20:30:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:30:53,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:30:53,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:53,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:30:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:53,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:30:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 993553349, now seen corresponding path program 1 times [2022-11-02 20:30:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:53,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981809505] [2022-11-02 20:30:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:30:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:30:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:30:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:30:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:30:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:30:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:30:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:30:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:30:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:30:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:30:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:54,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981809505] [2022-11-02 20:30:54,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981809505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:30:54,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085406544] [2022-11-02 20:30:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:54,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:30:54,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:54,249 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:30:54,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:30:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:30:54,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:30:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:30:55,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:30:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085406544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:55,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:30:55,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-02 20:30:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631940197] [2022-11-02 20:30:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:55,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:30:55,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:30:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:30:55,063 INFO L87 Difference]: Start difference. First operand 733 states and 1212 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-02 20:30:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:30:59,932 INFO L93 Difference]: Finished difference Result 2520 states and 4211 transitions. [2022-11-02 20:30:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:30:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-11-02 20:30:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:30:59,949 INFO L225 Difference]: With dead ends: 2520 [2022-11-02 20:30:59,949 INFO L226 Difference]: Without dead ends: 1941 [2022-11-02 20:30:59,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:30:59,954 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 3117 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:30:59,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3311 Valid, 2477 Invalid, 3404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [633 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 20:30:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-11-02 20:31:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1774. [2022-11-02 20:31:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1435 states have (on average 1.6766550522648083) internal successors, (2406), 1473 states have internal predecessors, (2406), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2022-11-02 20:31:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2965 transitions. [2022-11-02 20:31:00,073 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2965 transitions. Word has length 112 [2022-11-02 20:31:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:00,074 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2965 transitions. [2022-11-02 20:31:00,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-02 20:31:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2965 transitions. [2022-11-02 20:31:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-02 20:31:00,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:00,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:00,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:00,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:31:00,294 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1546981407, now seen corresponding path program 1 times [2022-11-02 20:31:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:00,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187226925] [2022-11-02 20:31:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:31:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:31:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:31:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:31:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:31:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:31:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:31:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:31:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:01,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187226925] [2022-11-02 20:31:01,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187226925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:31:01,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106904829] [2022-11-02 20:31:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:01,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:01,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:01,139 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:31:01,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:31:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:01,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:31:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:31:01,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:01,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106904829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:01,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:31:01,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-11-02 20:31:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603056189] [2022-11-02 20:31:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:31:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:31:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:31:01,622 INFO L87 Difference]: Start difference. First operand 1774 states and 2965 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:31:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:01,842 INFO L93 Difference]: Finished difference Result 4997 states and 8454 transitions. [2022-11-02 20:31:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:31:01,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-11-02 20:31:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:01,873 INFO L225 Difference]: With dead ends: 4997 [2022-11-02 20:31:01,873 INFO L226 Difference]: Without dead ends: 3378 [2022-11-02 20:31:01,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:31:01,887 INFO L413 NwaCegarLoop]: 1140 mSDtfsCounter, 989 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:01,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 2100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2022-11-02 20:31:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 3359. [2022-11-02 20:31:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2714 states have (on average 1.6768607221812823) internal successors, (4551), 2781 states have internal predecessors, (4551), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2022-11-02 20:31:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 5657 transitions. [2022-11-02 20:31:02,135 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 5657 transitions. Word has length 133 [2022-11-02 20:31:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:02,136 INFO L495 AbstractCegarLoop]: Abstraction has 3359 states and 5657 transitions. [2022-11-02 20:31:02,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:31:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 5657 transitions. [2022-11-02 20:31:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:31:02,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:02,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:02,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-02 20:31:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:02,362 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash -374211724, now seen corresponding path program 1 times [2022-11-02 20:31:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:02,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006737105] [2022-11-02 20:31:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:31:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:31:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:31:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:31:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:31:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:31:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-02 20:31:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:31:03,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:03,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006737105] [2022-11-02 20:31:03,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006737105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:31:03,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593811848] [2022-11-02 20:31:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:03,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:03,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:31:03,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:31:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:03,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:31:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:31:03,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:03,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593811848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:03,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:31:03,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 13 [2022-11-02 20:31:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598365762] [2022-11-02 20:31:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:31:03,566 INFO L87 Difference]: Start difference. First operand 3359 states and 5657 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:31:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:03,766 INFO L93 Difference]: Finished difference Result 6695 states and 11294 transitions. [2022-11-02 20:31:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:31:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-11-02 20:31:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:03,795 INFO L225 Difference]: With dead ends: 6695 [2022-11-02 20:31:03,796 INFO L226 Difference]: Without dead ends: 3324 [2022-11-02 20:31:03,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:31:03,821 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 13 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:03,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2919 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2022-11-02 20:31:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3324. [2022-11-02 20:31:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 2682 states have (on average 1.6711409395973154) internal successors, (4482), 2747 states have internal predecessors, (4482), 514 states have call successors, (514), 123 states have call predecessors, (514), 127 states have return successors, (588), 483 states have call predecessors, (588), 508 states have call successors, (588) [2022-11-02 20:31:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5584 transitions. [2022-11-02 20:31:04,084 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5584 transitions. Word has length 134 [2022-11-02 20:31:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:04,084 INFO L495 AbstractCegarLoop]: Abstraction has 3324 states and 5584 transitions. [2022-11-02 20:31:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:31:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5584 transitions. [2022-11-02 20:31:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:31:04,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:04,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:04,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:04,310 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -509062213, now seen corresponding path program 1 times [2022-11-02 20:31:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087048143] [2022-11-02 20:31:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:31:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:31:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:31:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:31:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:31:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:31:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 20:31:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:31:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:04,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087048143] [2022-11-02 20:31:04,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087048143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:31:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784938954] [2022-11-02 20:31:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:04,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:04,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:04,971 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:31:04,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 20:31:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:05,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:31:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:31:05,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:05,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784938954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:05,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:31:05,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-11-02 20:31:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284788914] [2022-11-02 20:31:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:05,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:31:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:05,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:31:05,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:31:05,477 INFO L87 Difference]: Start difference. First operand 3324 states and 5584 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:31:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:05,799 INFO L93 Difference]: Finished difference Result 6672 states and 11204 transitions. [2022-11-02 20:31:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:31:05,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-11-02 20:31:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:05,838 INFO L225 Difference]: With dead ends: 6672 [2022-11-02 20:31:05,838 INFO L226 Difference]: Without dead ends: 3365 [2022-11-02 20:31:05,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:31:05,852 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 138 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5744 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:05,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5744 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:31:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-11-02 20:31:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3317. [2022-11-02 20:31:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 2675 states have (on average 1.6695327102803739) internal successors, (4466), 2740 states have internal predecessors, (4466), 514 states have call successors, (514), 123 states have call predecessors, (514), 127 states have return successors, (588), 483 states have call predecessors, (588), 508 states have call successors, (588) [2022-11-02 20:31:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 5568 transitions. [2022-11-02 20:31:06,077 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 5568 transitions. Word has length 135 [2022-11-02 20:31:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:06,077 INFO L495 AbstractCegarLoop]: Abstraction has 3317 states and 5568 transitions. [2022-11-02 20:31:06,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:31:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 5568 transitions. [2022-11-02 20:31:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 20:31:06,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:06,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:06,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:31:06,310 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1261039541, now seen corresponding path program 1 times [2022-11-02 20:31:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:06,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40082824] [2022-11-02 20:31:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:31:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:31:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:31:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:31:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:31:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-02 20:31:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-02 20:31:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-02 20:31:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:31:07,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:07,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40082824] [2022-11-02 20:31:07,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40082824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:07,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:07,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:31:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796354023] [2022-11-02 20:31:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:07,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:31:07,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:31:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:31:07,401 INFO L87 Difference]: Start difference. First operand 3317 states and 5568 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:31:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:19,330 INFO L93 Difference]: Finished difference Result 8271 states and 13984 transitions. [2022-11-02 20:31:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:31:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-11-02 20:31:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:19,369 INFO L225 Difference]: With dead ends: 8271 [2022-11-02 20:31:19,369 INFO L226 Difference]: Without dead ends: 5056 [2022-11-02 20:31:19,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:31:19,384 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 1163 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 3689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:19,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2364 Invalid, 3689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [299 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-02 20:31:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-11-02 20:31:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 3549. [2022-11-02 20:31:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2845 states have (on average 1.6579964850615114) internal successors, (4717), 2910 states have internal predecessors, (4717), 562 states have call successors, (562), 123 states have call predecessors, (562), 141 states have return successors, (668), 537 states have call predecessors, (668), 556 states have call successors, (668) [2022-11-02 20:31:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 5947 transitions. [2022-11-02 20:31:20,420 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 5947 transitions. Word has length 188 [2022-11-02 20:31:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:20,421 INFO L495 AbstractCegarLoop]: Abstraction has 3549 states and 5947 transitions. [2022-11-02 20:31:20,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:31:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 5947 transitions. [2022-11-02 20:31:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-02 20:31:20,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:20,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:31:20,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1461336642, now seen corresponding path program 1 times [2022-11-02 20:31:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284511028] [2022-11-02 20:31:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:31:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:31:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-02 20:31:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:31:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 20:31:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 20:31:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:31:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:31:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-02 20:31:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-02 20:31:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-02 20:31:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:31:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:21,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284511028] [2022-11-02 20:31:21,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284511028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:21,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:21,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:31:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823162623] [2022-11-02 20:31:21,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:21,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:31:21,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:21,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:31:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:31:21,438 INFO L87 Difference]: Start difference. First operand 3549 states and 5947 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 20:31:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:36,692 INFO L93 Difference]: Finished difference Result 8558 states and 14580 transitions. [2022-11-02 20:31:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:31:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 189 [2022-11-02 20:31:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:36,728 INFO L225 Difference]: With dead ends: 8558 [2022-11-02 20:31:36,728 INFO L226 Difference]: Without dead ends: 5017 [2022-11-02 20:31:36,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:31:36,748 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1642 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 8976 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 9493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 8976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:36,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 4652 Invalid, 9493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [517 Valid, 8976 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-02 20:31:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2022-11-02 20:31:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 3563. [2022-11-02 20:31:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 2850 states have (on average 1.6494736842105264) internal successors, (4701), 2913 states have internal predecessors, (4701), 561 states have call successors, (561), 123 states have call predecessors, (561), 151 states have return successors, (695), 548 states have call predecessors, (695), 555 states have call successors, (695) [2022-11-02 20:31:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 5957 transitions. [2022-11-02 20:31:37,665 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 5957 transitions. Word has length 189 [2022-11-02 20:31:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:37,666 INFO L495 AbstractCegarLoop]: Abstraction has 3563 states and 5957 transitions. [2022-11-02 20:31:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 20:31:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 5957 transitions. [2022-11-02 20:31:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-02 20:31:37,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:37,674 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:31:37,675 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1305412880, now seen corresponding path program 1 times [2022-11-02 20:31:37,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:37,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219833985] [2022-11-02 20:31:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:37,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:31:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:31:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 20:31:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:31:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:31:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:31:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:31:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:31:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:31:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-02 20:31:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-02 20:31:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-02 20:31:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:31:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219833985] [2022-11-02 20:31:38,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219833985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:31:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866084663] [2022-11-02 20:31:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:38,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:31:38,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:38,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:31:38,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 20:31:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:39,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:31:39,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:31:39,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:39,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866084663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:39,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:31:39,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-02 20:31:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355803360] [2022-11-02 20:31:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:31:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:39,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:31:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:31:39,632 INFO L87 Difference]: Start difference. First operand 3563 states and 5957 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-02 20:31:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:45,090 INFO L93 Difference]: Finished difference Result 10914 states and 18635 transitions. [2022-11-02 20:31:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:31:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 191 [2022-11-02 20:31:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:45,141 INFO L225 Difference]: With dead ends: 10914 [2022-11-02 20:31:45,142 INFO L226 Difference]: Without dead ends: 7421 [2022-11-02 20:31:45,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:31:45,161 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 2433 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:45,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 1995 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 3666 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:31:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7421 states. [2022-11-02 20:31:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7421 to 6027. [2022-11-02 20:31:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 4801 states have (on average 1.6171630910227035) internal successors, (7764), 4883 states have internal predecessors, (7764), 962 states have call successors, (962), 208 states have call predecessors, (962), 263 states have return successors, (1378), 957 states have call predecessors, (1378), 952 states have call successors, (1378) [2022-11-02 20:31:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 10104 transitions. [2022-11-02 20:31:46,512 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 10104 transitions. Word has length 191 [2022-11-02 20:31:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:46,513 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 10104 transitions. [2022-11-02 20:31:46,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-02 20:31:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 10104 transitions. [2022-11-02 20:31:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 20:31:46,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:46,523 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:46,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:46,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efa1b84c-bc48-414d-9fda-eabae5869bb4/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:31:46,750 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1208603288, now seen corresponding path program 1 times [2022-11-02 20:31:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:46,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060546597] [2022-11-02 20:31:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:31:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:31:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:31:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:31:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:31:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:31:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:31:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:31:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:31:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:31:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:31:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:31:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:31:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:31:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:31:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060546597] [2022-11-02 20:31:47,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060546597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:47,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:47,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:31:47,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101635384] [2022-11-02 20:31:47,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:47,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:31:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:31:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:31:47,489 INFO L87 Difference]: Start difference. First operand 6027 states and 10104 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:32:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:04,354 INFO L93 Difference]: Finished difference Result 13704 states and 23578 transitions. [2022-11-02 20:32:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:32:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 138 [2022-11-02 20:32:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:04,410 INFO L225 Difference]: With dead ends: 13704 [2022-11-02 20:32:04,411 INFO L226 Difference]: Without dead ends: 7748 [2022-11-02 20:32:04,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:32:04,456 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 2037 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 7590 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 8417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 7590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:04,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 4321 Invalid, 8417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [827 Valid, 7590 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-02 20:32:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2022-11-02 20:32:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 5534. [2022-11-02 20:32:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 4387 states have (on average 1.6029177114201048) internal successors, (7032), 4460 states have internal predecessors, (7032), 919 states have call successors, (919), 181 states have call predecessors, (919), 227 states have return successors, (1284), 914 states have call predecessors, (1284), 909 states have call successors, (1284) [2022-11-02 20:32:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 9235 transitions. [2022-11-02 20:32:06,382 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 9235 transitions. Word has length 138 [2022-11-02 20:32:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:06,382 INFO L495 AbstractCegarLoop]: Abstraction has 5534 states and 9235 transitions. [2022-11-02 20:32:06,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:32:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 9235 transitions. [2022-11-02 20:32:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 20:32:06,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:06,389 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:32:06,390 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1086927606, now seen corresponding path program 1 times [2022-11-02 20:32:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:06,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359394878] [2022-11-02 20:32:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:32:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:32:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:32:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:32:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:32:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:32:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:32:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:32:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:32:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:32:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:32:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-02 20:32:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:32:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:32:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:32:07,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:07,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359394878] [2022-11-02 20:32:07,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359394878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:07,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:07,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:32:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040633957] [2022-11-02 20:32:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:07,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:32:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:32:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:07,064 INFO L87 Difference]: Start difference. First operand 5534 states and 9235 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:32:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:26,347 INFO L93 Difference]: Finished difference Result 17351 states and 31375 transitions. [2022-11-02 20:32:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:32:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 138 [2022-11-02 20:32:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:26,447 INFO L225 Difference]: With dead ends: 17351 [2022-11-02 20:32:26,447 INFO L226 Difference]: Without dead ends: 11905 [2022-11-02 20:32:26,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:32:26,510 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 4900 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 4506 mSolverCounterSat, 1593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 6099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1593 IncrementalHoareTripleChecker+Valid, 4506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:26,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4988 Valid, 2814 Invalid, 6099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1593 Valid, 4506 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-02 20:32:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11905 states. [2022-11-02 20:32:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11905 to 9011. [2022-11-02 20:32:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9011 states, 7135 states have (on average 1.5910301331464611) internal successors, (11352), 7262 states have internal predecessors, (11352), 1498 states have call successors, (1498), 295 states have call predecessors, (1498), 377 states have return successors, (2537), 1497 states have call predecessors, (2537), 1484 states have call successors, (2537) [2022-11-02 20:32:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 15387 transitions. [2022-11-02 20:32:28,997 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 15387 transitions. Word has length 138 [2022-11-02 20:32:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:28,997 INFO L495 AbstractCegarLoop]: Abstraction has 9011 states and 15387 transitions. [2022-11-02 20:32:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:32:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 15387 transitions. [2022-11-02 20:32:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:32:29,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:29,005 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:29,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:32:29,006 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 648457227, now seen corresponding path program 1 times [2022-11-02 20:32:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:29,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131427229] [2022-11-02 20:32:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:32:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:32:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:32:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:32:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:32:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:32:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 20:32:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:32:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:32:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:32:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:32:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:32:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-02 20:32:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-02 20:32:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:32:29,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131427229] [2022-11-02 20:32:29,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131427229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:29,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:29,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:32:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768699795] [2022-11-02 20:32:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:29,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:32:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:32:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:32:29,879 INFO L87 Difference]: Start difference. First operand 9011 states and 15387 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 20:32:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:51,338 INFO L93 Difference]: Finished difference Result 21483 states and 37748 transitions. [2022-11-02 20:32:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:32:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 141 [2022-11-02 20:32:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:51,438 INFO L225 Difference]: With dead ends: 21483 [2022-11-02 20:32:51,438 INFO L226 Difference]: Without dead ends: 12565 [2022-11-02 20:32:51,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:32:51,664 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 2847 mSDsluCounter, 4793 mSDsCounter, 0 mSdLazyCounter, 10707 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 5968 SdHoareTripleChecker+Invalid, 11912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 10707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:51,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2899 Valid, 5968 Invalid, 11912 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1205 Valid, 10707 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-11-02 20:32:51,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12565 states. [2022-11-02 20:32:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12565 to 8401. [2022-11-02 20:32:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8401 states, 6711 states have (on average 1.6024437490686931) internal successors, (10754), 6806 states have internal predecessors, (10754), 1330 states have call successors, (1330), 287 states have call predecessors, (1330), 359 states have return successors, (2114), 1351 states have call predecessors, (2114), 1316 states have call successors, (2114) [2022-11-02 20:32:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 14198 transitions. [2022-11-02 20:32:54,578 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 14198 transitions. Word has length 141 [2022-11-02 20:32:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:54,578 INFO L495 AbstractCegarLoop]: Abstraction has 8401 states and 14198 transitions. [2022-11-02 20:32:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 20:32:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 14198 transitions. [2022-11-02 20:32:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-02 20:32:54,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:54,587 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:32:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:32:54,587 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1200842331, now seen corresponding path program 1 times [2022-11-02 20:32:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:54,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626346890] [2022-11-02 20:32:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:32:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:32:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 20:32:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:32:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:32:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:32:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 20:32:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:32:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:32:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:32:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 20:32:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:32:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-02 20:32:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:32:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:32:55,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:55,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626346890] [2022-11-02 20:32:55,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626346890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:55,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:55,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:32:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217000347] [2022-11-02 20:32:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:55,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:32:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:32:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:32:55,430 INFO L87 Difference]: Start difference. First operand 8401 states and 14198 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14)