./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 b034b25c13122a131dcef5e20457a6ebe39c9d7c5637a670f7b0b39a233b1f7a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:02,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:02,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:02,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:02,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:02,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:02,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:02,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:02,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:02,682 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:02,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:02,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:02,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:02,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:02,686 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:02,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:02,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:02,687 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:02,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:02,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:02,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:02,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:02,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:02,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:02,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:02,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:02,691 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:02,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:02,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:02,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:02,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:02,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:02,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:02,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:02,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:02,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:02,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:02,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:02,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:02,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:02,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:02,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:02,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034b25c13122a131dcef5e20457a6ebe39c9d7c5637a670f7b0b39a233b1f7a [2023-11-26 10:44:03,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:03,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:03,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:03,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:03,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:03,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-11-26 10:44:06,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:06,808 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:06,810 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-11-26 10:44:06,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/data/c1af88d41/deb3604b4c86488bab1c786e9cb604ae/FLAGd0d9660c1 [2023-11-26 10:44:06,867 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/data/c1af88d41/deb3604b4c86488bab1c786e9cb604ae [2023-11-26 10:44:06,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:06,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:06,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:06,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:06,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:06,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22986e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06, skipping insertion in model container [2023-11-26 10:44:06,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:07,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:07,480 WARN L240 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_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[6354,6367] [2023-11-26 10:44:07,569 WARN L240 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_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[11909,11922] [2023-11-26 10:44:08,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:08,785 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:08,825 WARN L240 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_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[6354,6367] [2023-11-26 10:44:08,847 WARN L240 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_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c[11909,11922] [2023-11-26 10:44:09,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:09,471 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:09,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09 WrapperNode [2023-11-26 10:44:09,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:09,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:09,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:09,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:09,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:09,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:09,872 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4979 [2023-11-26 10:44:09,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:09,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:09,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:09,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:09,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:09,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,171 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:44:10,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:10,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:10,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:10,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:10,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (1/1) ... [2023-11-26 10:44:10,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:10,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:10,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:10,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:10,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:10,795 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:10,797 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:16,352 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:16,442 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:16,442 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:44:16,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:16 BoogieIcfgContainer [2023-11-26 10:44:16,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:16,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:16,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:16,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:16,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:06" (1/3) ... [2023-11-26 10:44:16,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358751fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:16, skipping insertion in model container [2023-11-26 10:44:16,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:09" (2/3) ... [2023-11-26 10:44:16,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358751fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:16, skipping insertion in model container [2023-11-26 10:44:16,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:16" (3/3) ... [2023-11-26 10:44:16,458 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-11-26 10:44:16,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:16,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:44:16,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:16,576 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=LoopHeads, 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;@925bf72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:16,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:44:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:44:16,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:16,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:16,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:16,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1841440842, now seen corresponding path program 1 times [2023-11-26 10:44:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339874491] [2023-11-26 10:44:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339874491] [2023-11-26 10:44:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339874491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:16,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609790210] [2023-11-26 10:44:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:16,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:16,857 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:16,996 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-11-26 10:44:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:44:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:17,027 INFO L225 Difference]: With dead ends: 1594 [2023-11-26 10:44:17,028 INFO L226 Difference]: Without dead ends: 803 [2023-11-26 10:44:17,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:17,040 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:17,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-26 10:44:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-26 10:44:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-11-26 10:44:17,151 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-11-26 10:44:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:17,151 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-11-26 10:44:17,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-11-26 10:44:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 10:44:17,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:17,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:17,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1254634828, now seen corresponding path program 1 times [2023-11-26 10:44:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886393051] [2023-11-26 10:44:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886393051] [2023-11-26 10:44:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886393051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:17,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:17,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042419117] [2023-11-26 10:44:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:17,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:17,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:17,431 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:17,628 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-11-26 10:44:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-26 10:44:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:17,634 INFO L225 Difference]: With dead ends: 864 [2023-11-26 10:44:17,635 INFO L226 Difference]: Without dead ends: 832 [2023-11-26 10:44:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:17,637 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:17,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-26 10:44:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-11-26 10:44:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-11-26 10:44:17,671 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-11-26 10:44:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:17,672 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-11-26 10:44:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-11-26 10:44:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 10:44:17,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:17,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:17,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:17,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1671741616, now seen corresponding path program 1 times [2023-11-26 10:44:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:17,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539307591] [2023-11-26 10:44:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:17,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:17,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539307591] [2023-11-26 10:44:17,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539307591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:17,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:17,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:17,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604482122] [2023-11-26 10:44:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:17,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:17,879 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,063 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-11-26 10:44:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-26 10:44:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,069 INFO L225 Difference]: With dead ends: 977 [2023-11-26 10:44:18,070 INFO L226 Difference]: Without dead ends: 948 [2023-11-26 10:44:18,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:18,072 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-11-26 10:44:18,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-11-26 10:44:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-11-26 10:44:18,098 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-11-26 10:44:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:18,099 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-11-26 10:44:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-11-26 10:44:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 10:44:18,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:18,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:18,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:18,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:18,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash -349537184, now seen corresponding path program 1 times [2023-11-26 10:44:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346928070] [2023-11-26 10:44:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346928070] [2023-11-26 10:44:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346928070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:18,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:18,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:18,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690049812] [2023-11-26 10:44:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:18,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:18,178 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,223 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-11-26 10:44:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:18,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-26 10:44:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,230 INFO L225 Difference]: With dead ends: 931 [2023-11-26 10:44:18,231 INFO L226 Difference]: Without dead ends: 875 [2023-11-26 10:44:18,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:18,240 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-26 10:44:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-26 10:44:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-11-26 10:44:18,269 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-11-26 10:44:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:18,270 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-11-26 10:44:18,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-11-26 10:44:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 10:44:18,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:18,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:18,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:44:18,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:18,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -347392232, now seen corresponding path program 1 times [2023-11-26 10:44:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690426349] [2023-11-26 10:44:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690426349] [2023-11-26 10:44:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690426349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112261313] [2023-11-26 10:44:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:18,500 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,616 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-11-26 10:44:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-26 10:44:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,622 INFO L225 Difference]: With dead ends: 974 [2023-11-26 10:44:18,623 INFO L226 Difference]: Without dead ends: 875 [2023-11-26 10:44:18,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:18,624 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-26 10:44:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-26 10:44:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-11-26 10:44:18,655 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-11-26 10:44:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:18,656 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-11-26 10:44:18,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-11-26 10:44:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 10:44:18,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:18,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:44:18,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:18,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1987359035, now seen corresponding path program 1 times [2023-11-26 10:44:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924159056] [2023-11-26 10:44:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924159056] [2023-11-26 10:44:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924159056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572231347] [2023-11-26 10:44:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:18,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:18,884 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,952 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-11-26 10:44:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-26 10:44:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,964 INFO L225 Difference]: With dead ends: 881 [2023-11-26 10:44:18,965 INFO L226 Difference]: Without dead ends: 879 [2023-11-26 10:44:18,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:18,967 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-26 10:44:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-11-26 10:44:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-11-26 10:44:19,008 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-11-26 10:44:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:19,009 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-11-26 10:44:19,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-11-26 10:44:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 10:44:19,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:19,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:44:19,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 177158552, now seen corresponding path program 1 times [2023-11-26 10:44:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761236122] [2023-11-26 10:44:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761236122] [2023-11-26 10:44:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761236122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792064616] [2023-11-26 10:44:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,063 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:19,104 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-11-26 10:44:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 10:44:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:19,111 INFO L225 Difference]: With dead ends: 991 [2023-11-26 10:44:19,111 INFO L226 Difference]: Without dead ends: 931 [2023-11-26 10:44:19,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,113 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:19,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-11-26 10:44:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-11-26 10:44:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-11-26 10:44:19,183 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-11-26 10:44:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:19,184 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-11-26 10:44:19,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,184 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-11-26 10:44:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 10:44:19,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:19,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:44:19,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:19,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -448497512, now seen corresponding path program 1 times [2023-11-26 10:44:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701683516] [2023-11-26 10:44:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:19,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701683516] [2023-11-26 10:44:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701683516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217300679] [2023-11-26 10:44:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,237 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:19,280 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-11-26 10:44:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 10:44:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:19,288 INFO L225 Difference]: With dead ends: 1211 [2023-11-26 10:44:19,288 INFO L226 Difference]: Without dead ends: 1058 [2023-11-26 10:44:19,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,291 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:19,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-11-26 10:44:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-11-26 10:44:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-11-26 10:44:19,326 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-11-26 10:44:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:19,328 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-11-26 10:44:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-11-26 10:44:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 10:44:19,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:19,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:44:19,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:19,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash 440235928, now seen corresponding path program 1 times [2023-11-26 10:44:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:19,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433934135] [2023-11-26 10:44:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433934135] [2023-11-26 10:44:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433934135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:19,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:19,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067563063] [2023-11-26 10:44:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,398 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:19,450 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-11-26 10:44:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:19,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 10:44:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:19,458 INFO L225 Difference]: With dead ends: 1568 [2023-11-26 10:44:19,458 INFO L226 Difference]: Without dead ends: 1288 [2023-11-26 10:44:19,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,463 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:19,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-26 10:44:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-11-26 10:44:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-11-26 10:44:19,516 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-11-26 10:44:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:19,517 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-11-26 10:44:19,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-11-26 10:44:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 10:44:19,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:19,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:44:19,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:19,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1865855631, now seen corresponding path program 1 times [2023-11-26 10:44:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068730211] [2023-11-26 10:44:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068730211] [2023-11-26 10:44:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068730211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629100963] [2023-11-26 10:44:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:19,607 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:24,618 INFO L93 Difference]: Finished difference Result 2790 states and 5063 transitions. [2023-11-26 10:44:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-26 10:44:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:24,633 INFO L225 Difference]: With dead ends: 2790 [2023-11-26 10:44:24,633 INFO L226 Difference]: Without dead ends: 2037 [2023-11-26 10:44:24,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:24,636 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 834 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:24,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 140 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-26 10:44:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-11-26 10:44:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-11-26 10:44:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7518427518427517) internal successors, (3565), 2036 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3565 transitions. [2023-11-26 10:44:24,717 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3565 transitions. Word has length 47 [2023-11-26 10:44:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:24,718 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 3565 transitions. [2023-11-26 10:44:24,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3565 transitions. [2023-11-26 10:44:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:44:24,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:24,720 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:24,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:44:24,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:24,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1612908441, now seen corresponding path program 1 times [2023-11-26 10:44:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:24,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231901683] [2023-11-26 10:44:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:24,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:24,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231901683] [2023-11-26 10:44:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231901683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:24,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:24,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805476721] [2023-11-26 10:44:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:24,859 INFO L87 Difference]: Start difference. First operand 2037 states and 3565 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:25,008 INFO L93 Difference]: Finished difference Result 3545 states and 5717 transitions. [2023-11-26 10:44:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-26 10:44:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:25,028 INFO L225 Difference]: With dead ends: 3545 [2023-11-26 10:44:25,029 INFO L226 Difference]: Without dead ends: 3175 [2023-11-26 10:44:25,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:25,031 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:25,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-11-26 10:44:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2023-11-26 10:44:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.690909090909091) internal successors, (4185), 2476 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4185 transitions. [2023-11-26 10:44:25,130 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4185 transitions. Word has length 50 [2023-11-26 10:44:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:25,130 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4185 transitions. [2023-11-26 10:44:25,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4185 transitions. [2023-11-26 10:44:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:44:25,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:25,132 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:25,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:44:25,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:25,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2056402791, now seen corresponding path program 1 times [2023-11-26 10:44:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:25,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095512041] [2023-11-26 10:44:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:25,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095512041] [2023-11-26 10:44:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095512041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284275800] [2023-11-26 10:44:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:25,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:25,257 INFO L87 Difference]: Start difference. First operand 2477 states and 4185 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:25,426 INFO L93 Difference]: Finished difference Result 4053 states and 6437 transitions. [2023-11-26 10:44:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-26 10:44:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:25,447 INFO L225 Difference]: With dead ends: 4053 [2023-11-26 10:44:25,448 INFO L226 Difference]: Without dead ends: 3543 [2023-11-26 10:44:25,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:25,451 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:25,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-11-26 10:44:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2023-11-26 10:44:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6283549100094727) internal successors, (5157), 3168 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5157 transitions. [2023-11-26 10:44:25,572 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5157 transitions. Word has length 50 [2023-11-26 10:44:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:25,572 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5157 transitions. [2023-11-26 10:44:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5157 transitions. [2023-11-26 10:44:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 10:44:25,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:25,574 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:44:25,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:25,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1349831065, now seen corresponding path program 1 times [2023-11-26 10:44:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947888025] [2023-11-26 10:44:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 10:44:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947888025] [2023-11-26 10:44:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947888025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:25,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466419474] [2023-11-26 10:44:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:25,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:25,714 INFO L87 Difference]: Start difference. First operand 3169 states and 5157 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:25,880 INFO L93 Difference]: Finished difference Result 4561 states and 7153 transitions. [2023-11-26 10:44:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:25,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-26 10:44:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:25,904 INFO L225 Difference]: With dead ends: 4561 [2023-11-26 10:44:25,904 INFO L226 Difference]: Without dead ends: 4051 [2023-11-26 10:44:25,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:25,907 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:25,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-11-26 10:44:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2023-11-26 10:44:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.598095238095238) internal successors, (5873), 3676 states have internal predecessors, (5873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5873 transitions. [2023-11-26 10:44:26,046 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5873 transitions. Word has length 50 [2023-11-26 10:44:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,046 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5873 transitions. [2023-11-26 10:44:26,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5873 transitions. [2023-11-26 10:44:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:44:26,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,048 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:44:26,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1978344379, now seen corresponding path program 1 times [2023-11-26 10:44:26,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650832235] [2023-11-26 10:44:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650832235] [2023-11-26 10:44:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650832235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:26,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101054691] [2023-11-26 10:44:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,134 INFO L87 Difference]: Start difference. First operand 3677 states and 5873 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:26,234 INFO L93 Difference]: Finished difference Result 5829 states and 8911 transitions. [2023-11-26 10:44:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-26 10:44:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:26,256 INFO L225 Difference]: With dead ends: 5829 [2023-11-26 10:44:26,256 INFO L226 Difference]: Without dead ends: 3679 [2023-11-26 10:44:26,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,260 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:26,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2023-11-26 10:44:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2023-11-26 10:44:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5844897959183672) internal successors, (5823), 3676 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5823 transitions. [2023-11-26 10:44:26,394 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5823 transitions. Word has length 51 [2023-11-26 10:44:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,395 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5823 transitions. [2023-11-26 10:44:26,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5823 transitions. [2023-11-26 10:44:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:44:26,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,396 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:26,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:44:26,397 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash 396658031, now seen corresponding path program 1 times [2023-11-26 10:44:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887262540] [2023-11-26 10:44:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887262540] [2023-11-26 10:44:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887262540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707055708] [2023-11-26 10:44:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,480 INFO L87 Difference]: Start difference. First operand 3677 states and 5823 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:26,548 INFO L93 Difference]: Finished difference Result 4523 states and 7010 transitions. [2023-11-26 10:44:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:26,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-26 10:44:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:26,556 INFO L225 Difference]: With dead ends: 4523 [2023-11-26 10:44:26,556 INFO L226 Difference]: Without dead ends: 2373 [2023-11-26 10:44:26,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,560 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:26,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-26 10:44:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2023-11-26 10:44:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6912013536379018) internal successors, (3998), 2365 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3998 transitions. [2023-11-26 10:44:26,637 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3998 transitions. Word has length 52 [2023-11-26 10:44:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3998 transitions. [2023-11-26 10:44:26,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3998 transitions. [2023-11-26 10:44:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 10:44:26,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:44:26,640 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash -230503927, now seen corresponding path program 1 times [2023-11-26 10:44:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281191684] [2023-11-26 10:44:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281191684] [2023-11-26 10:44:26,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281191684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:26,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:26,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929766345] [2023-11-26 10:44:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:26,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:26,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,742 INFO L87 Difference]: Start difference. First operand 2366 states and 3998 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:26,796 INFO L93 Difference]: Finished difference Result 2784 states and 4576 transitions. [2023-11-26 10:44:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-26 10:44:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:26,802 INFO L225 Difference]: With dead ends: 2784 [2023-11-26 10:44:26,802 INFO L226 Difference]: Without dead ends: 1954 [2023-11-26 10:44:26,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:26,805 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:26,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:26,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-26 10:44:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2023-11-26 10:44:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.7502564102564102) internal successors, (3413), 1951 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3413 transitions. [2023-11-26 10:44:26,868 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3413 transitions. Word has length 53 [2023-11-26 10:44:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,869 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3413 transitions. [2023-11-26 10:44:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3413 transitions. [2023-11-26 10:44:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 10:44:26,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:44:26,871 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 796015063, now seen corresponding path program 1 times [2023-11-26 10:44:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136184230] [2023-11-26 10:44:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:29,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:29,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136184230] [2023-11-26 10:44:29,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136184230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:29,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316081190] [2023-11-26 10:44:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:29,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:29,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:44:29,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:29,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316081190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:29,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:29,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-26 10:44:29,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897461580] [2023-11-26 10:44:29,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:29,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 10:44:29,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 10:44:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:44:29,748 INFO L87 Difference]: Start difference. First operand 1952 states and 3413 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:32,455 INFO L93 Difference]: Finished difference Result 4051 states and 6165 transitions. [2023-11-26 10:44:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-26 10:44:32,456 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-26 10:44:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:32,464 INFO L225 Difference]: With dead ends: 4051 [2023-11-26 10:44:32,464 INFO L226 Difference]: Without dead ends: 3635 [2023-11-26 10:44:32,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-11-26 10:44:32,468 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 12333 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12333 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:32,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12333 Valid, 7668 Invalid, 633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:44:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-11-26 10:44:32,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3423. [2023-11-26 10:44:32,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 3421 states have (on average 1.5396083016661795) internal successors, (5267), 3422 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 5267 transitions. [2023-11-26 10:44:32,604 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 5267 transitions. Word has length 55 [2023-11-26 10:44:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:32,604 INFO L495 AbstractCegarLoop]: Abstraction has 3423 states and 5267 transitions. [2023-11-26 10:44:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 5267 transitions. [2023-11-26 10:44:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:44:32,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:32,608 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:32,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:32,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 10:44:32,814 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:32,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:32,814 INFO L85 PathProgramCache]: Analyzing trace with hash -315121631, now seen corresponding path program 1 times [2023-11-26 10:44:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959548089] [2023-11-26 10:44:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959548089] [2023-11-26 10:44:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959548089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703038382] [2023-11-26 10:44:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:33,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:33,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 10:44:33,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:34,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703038382] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:35,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:35,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-26 10:44:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493981049] [2023-11-26 10:44:35,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 10:44:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 10:44:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-26 10:44:35,447 INFO L87 Difference]: Start difference. First operand 3423 states and 5267 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:36,367 INFO L93 Difference]: Finished difference Result 6752 states and 9499 transitions. [2023-11-26 10:44:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:44:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-26 10:44:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:36,377 INFO L225 Difference]: With dead ends: 6752 [2023-11-26 10:44:36,377 INFO L226 Difference]: Without dead ends: 5173 [2023-11-26 10:44:36,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-11-26 10:44:36,382 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 12120 mSDsluCounter, 9052 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12120 SdHoareTripleChecker+Valid, 10537 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:36,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12120 Valid, 10537 Invalid, 413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2023-11-26 10:44:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4963. [2023-11-26 10:44:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4961 states have (on average 1.4557548881273936) internal successors, (7222), 4962 states have internal predecessors, (7222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7222 transitions. [2023-11-26 10:44:36,644 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7222 transitions. Word has length 56 [2023-11-26 10:44:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:36,644 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 7222 transitions. [2023-11-26 10:44:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7222 transitions. [2023-11-26 10:44:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:44:36,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:36,649 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:36,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:36,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 10:44:36,864 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2010436385, now seen corresponding path program 1 times [2023-11-26 10:44:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441095913] [2023-11-26 10:44:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441095913] [2023-11-26 10:44:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441095913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976363995] [2023-11-26 10:44:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:37,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:37,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:37,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:37,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 10:44:37,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:38,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976363995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:39,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:39,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-26 10:44:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185800200] [2023-11-26 10:44:39,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:39,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:44:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:44:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:44:39,132 INFO L87 Difference]: Start difference. First operand 4963 states and 7222 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:40,234 INFO L93 Difference]: Finished difference Result 8312 states and 11498 transitions. [2023-11-26 10:44:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:44:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-26 10:44:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:40,247 INFO L225 Difference]: With dead ends: 8312 [2023-11-26 10:44:40,247 INFO L226 Difference]: Without dead ends: 5311 [2023-11-26 10:44:40,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-26 10:44:40,254 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 16513 mSDsluCounter, 6240 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16513 SdHoareTripleChecker+Valid, 7733 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:40,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16513 Valid, 7733 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-11-26 10:44:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5023. [2023-11-26 10:44:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5021 states have (on average 1.4423421629157538) internal successors, (7242), 5022 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 7242 transitions. [2023-11-26 10:44:40,453 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 7242 transitions. Word has length 56 [2023-11-26 10:44:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:40,453 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 7242 transitions. [2023-11-26 10:44:40,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 7242 transitions. [2023-11-26 10:44:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 10:44:40,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:40,455 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:40,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:40,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:40,672 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:40,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1055635935, now seen corresponding path program 1 times [2023-11-26 10:44:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300529957] [2023-11-26 10:44:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300529957] [2023-11-26 10:44:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300529957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328236493] [2023-11-26 10:44:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:41,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:41,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:41,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:41,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 10:44:41,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:42,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:43,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328236493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:43,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:43,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-26 10:44:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527460314] [2023-11-26 10:44:43,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:44:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:44:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:44:43,067 INFO L87 Difference]: Start difference. First operand 5023 states and 7242 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:44,232 INFO L93 Difference]: Finished difference Result 11604 states and 15525 transitions. [2023-11-26 10:44:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:44:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-26 10:44:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:44,248 INFO L225 Difference]: With dead ends: 11604 [2023-11-26 10:44:44,248 INFO L226 Difference]: Without dead ends: 8842 [2023-11-26 10:44:44,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-11-26 10:44:44,255 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 10443 mSDsluCounter, 6155 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10443 SdHoareTripleChecker+Valid, 7639 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:44,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10443 Valid, 7639 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2023-11-26 10:44:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8322. [2023-11-26 10:44:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 8320 states have (on average 1.353846153846154) internal successors, (11264), 8321 states have internal predecessors, (11264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 11264 transitions. [2023-11-26 10:44:44,718 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 11264 transitions. Word has length 56 [2023-11-26 10:44:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:44,718 INFO L495 AbstractCegarLoop]: Abstraction has 8322 states and 11264 transitions. [2023-11-26 10:44:44,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 11264 transitions. [2023-11-26 10:44:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 10:44:44,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:44,720 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-26 10:44:44,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:44,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:44,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:44,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1773329579, now seen corresponding path program 1 times [2023-11-26 10:44:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194541380] [2023-11-26 10:44:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:45,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194541380] [2023-11-26 10:44:45,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194541380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:45,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163858404] [2023-11-26 10:44:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:45,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc969f00-e27c-4b8a-84c4-24fe7df80ef5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 10:44:46,072 INFO L285 TraceCheckSpWp]: Computing forward predicates...