./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1 --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 3736cf4cbe4516cdffd2221499177e4bcfb3173bf4b9cf02e11d88f6dadf2f34 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:50:07,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:50:07,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:50:07,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:50:07,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:50:07,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:50:07,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:50:07,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:50:07,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:50:07,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:50:07,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:50:07,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:50:07,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:50:07,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:50:07,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:50:07,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:50:07,571 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:50:07,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:50:07,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:50:07,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:50:07,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:50:07,573 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1 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 -> 3736cf4cbe4516cdffd2221499177e4bcfb3173bf4b9cf02e11d88f6dadf2f34 [2024-12-02 10:50:07,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:50:07,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:50:07,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:50:07,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:50:07,903 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:50:07,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 10:50:11,374 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/data/0c059b2dc/242b23c997ba49eb8f613aee2453b9d7/FLAG8b2180e76 [2024-12-02 10:50:11,876 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:50:11,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 10:50:11,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/data/0c059b2dc/242b23c997ba49eb8f613aee2453b9d7/FLAG8b2180e76 [2024-12-02 10:50:11,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/data/0c059b2dc/242b23c997ba49eb8f613aee2453b9d7 [2024-12-02 10:50:11,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:50:11,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:50:11,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:50:11,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:50:11,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:50:11,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:50:11" (1/1) ... [2024-12-02 10:50:11,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351242b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:11, skipping insertion in model container [2024-12-02 10:50:11,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:50:11" (1/1) ... [2024-12-02 10:50:12,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:50:12,410 WARN L250 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_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[6391,6404] [2024-12-02 10:50:12,479 WARN L250 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_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[11946,11959] [2024-12-02 10:50:13,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:50:13,298 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:50:13,331 WARN L250 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_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[6391,6404] [2024-12-02 10:50:13,343 WARN L250 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_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c[11946,11959] [2024-12-02 10:50:13,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:50:13,838 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:50:13,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13 WrapperNode [2024-12-02 10:50:13,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:50:13,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:50:13,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:50:13,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:50:13,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:13,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,318 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4982 [2024-12-02 10:50:14,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:50:14,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:50:14,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:50:14,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:50:14,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,634 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]. [2024-12-02 10:50:14,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:50:14,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:50:14,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:50:14,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:50:14,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (1/1) ... [2024-12-02 10:50:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:50:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:14,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:50:14,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:50:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:50:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:50:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:50:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:50:15,123 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:50:15,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:50:20,688 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 10:50:20,689 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:50:20,724 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:50:20,724 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 10:50:20,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:50:20 BoogieIcfgContainer [2024-12-02 10:50:20,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:50:20,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:50:20,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:50:20,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:50:20,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:50:11" (1/3) ... [2024-12-02 10:50:20,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44516373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:50:20, skipping insertion in model container [2024-12-02 10:50:20,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:50:13" (2/3) ... [2024-12-02 10:50:20,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44516373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:50:20, skipping insertion in model container [2024-12-02 10:50:20,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:50:20" (3/3) ... [2024-12-02 10:50:20,736 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c [2024-12-02 10:50:20,756 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:50:20,759 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label01.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 10:50:20,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:50:20,868 INFO L333 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, 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;@20656a88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:50:20,868 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 10:50:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 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) [2024-12-02 10:50:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 10:50:20,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:20,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:20,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:20,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 10:50:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539371964] [2024-12-02 10:50:20,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539371964] [2024-12-02 10:50:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539371964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:50:21,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131813778] [2024-12-02 10:50:21,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:21,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:50:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:21,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:50:21,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:50:21,155 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-12-02 10:50:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:21,232 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 10:50:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:50:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2024-12-02 10:50:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:21,251 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 10:50:21,251 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 10:50:21,257 INFO L434 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 [2024-12-02 10:50:21,260 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:21,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 10:50:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 10:50:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 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) [2024-12-02 10:50:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 10:50:21,345 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 10:50:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:21,345 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 10:50:21,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-12-02 10:50:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 10:50:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 10:50:21,347 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:21,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:21,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:50:21,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:21,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 10:50:21,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:21,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173415214] [2024-12-02 10:50:21,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:21,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:21,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173415214] [2024-12-02 10:50:21,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173415214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:21,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:21,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:21,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059539167] [2024-12-02 10:50:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:21,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:21,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:21,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:21,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:21,546 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-12-02 10:50:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:21,667 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 10:50:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2024-12-02 10:50:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:21,673 INFO L225 Difference]: With dead ends: 873 [2024-12-02 10:50:21,673 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 10:50:21,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:21,675 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:21,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:50:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 10:50:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 10:50:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 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) [2024-12-02 10:50:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 10:50:21,708 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 10:50:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:21,708 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 10:50:21,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-12-02 10:50:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 10:50:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 10:50:21,710 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:21,710 INFO L218 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] [2024-12-02 10:50:21,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:50:21,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:21,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 10:50:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123895847] [2024-12-02 10:50:21,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123895847] [2024-12-02 10:50:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123895847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481612012] [2024-12-02 10:50:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:21,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:21,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:21,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:21,876 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2024-12-02 10:50:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:22,038 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-12-02 10:50:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:50:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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 [2024-12-02 10:50:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:22,044 INFO L225 Difference]: With dead ends: 993 [2024-12-02 10:50:22,044 INFO L226 Difference]: Without dead ends: 962 [2024-12-02 10:50:22,045 INFO L434 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 [2024-12-02 10:50:22,046 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:22,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:50:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-12-02 10:50:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-12-02 10:50:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 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) [2024-12-02 10:50:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-12-02 10:50:22,076 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-12-02 10:50:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:22,077 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-12-02 10:50:22,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 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) [2024-12-02 10:50:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-12-02 10:50:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 10:50:22,078 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:22,078 INFO L218 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] [2024-12-02 10:50:22,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:50:22,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:22,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 10:50:22,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352235311] [2024-12-02 10:50:22,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:22,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:22,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352235311] [2024-12-02 10:50:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352235311] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:22,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:22,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49732253] [2024-12-02 10:50:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:22,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:22,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:22,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:22,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:22,176 INFO L87 Difference]: Start difference. First operand 836 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-02 10:50:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:22,220 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-12-02 10:50:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-12-02 10:50:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:22,225 INFO L225 Difference]: With dead ends: 945 [2024-12-02 10:50:22,225 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 10:50:22,226 INFO L434 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 [2024-12-02 10:50:22,227 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 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 [2024-12-02 10:50:22,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:22,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 10:50:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 10:50:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 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) [2024-12-02 10:50:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-12-02 10:50:22,257 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-12-02 10:50:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:22,258 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-12-02 10:50:22,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-02 10:50:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-12-02 10:50:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 10:50:22,259 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:22,259 INFO L218 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] [2024-12-02 10:50:22,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:50:22,260 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:22,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 10:50:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473183178] [2024-12-02 10:50:22,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:22,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:22,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473183178] [2024-12-02 10:50:22,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473183178] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:22,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:22,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14485029] [2024-12-02 10:50:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:22,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:22,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:22,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:22,487 INFO L87 Difference]: Start difference. First operand 883 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-12-02 10:50:22,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:22,591 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-12-02 10:50:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-12-02 10:50:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:22,596 INFO L225 Difference]: With dead ends: 992 [2024-12-02 10:50:22,596 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 10:50:22,597 INFO L434 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 [2024-12-02 10:50:22,598 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:22,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 10:50:22,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 10:50:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 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) [2024-12-02 10:50:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-12-02 10:50:22,627 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-12-02 10:50:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:22,627 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-12-02 10:50:22,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-12-02 10:50:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-12-02 10:50:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 10:50:22,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:22,628 INFO L218 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] [2024-12-02 10:50:22,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:50:22,629 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:22,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 10:50:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:22,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005719733] [2024-12-02 10:50:22,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005719733] [2024-12-02 10:50:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005719733] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:22,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190855247] [2024-12-02 10:50:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:22,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:23,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:23,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:23,003 INFO L87 Difference]: Start difference. First operand 883 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-12-02 10:50:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:23,061 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-12-02 10:50:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2024-12-02 10:50:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:23,070 INFO L225 Difference]: With dead ends: 891 [2024-12-02 10:50:23,070 INFO L226 Difference]: Without dead ends: 889 [2024-12-02 10:50:23,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:23,072 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:23,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-12-02 10:50:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-12-02 10:50:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 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) [2024-12-02 10:50:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-12-02 10:50:23,103 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-12-02 10:50:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:23,103 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-12-02 10:50:23,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-12-02 10:50:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-12-02 10:50:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 10:50:23,104 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:23,104 INFO L218 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] [2024-12-02 10:50:23,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:50:23,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:23,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 10:50:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117241808] [2024-12-02 10:50:23,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117241808] [2024-12-02 10:50:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117241808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:23,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75534634] [2024-12-02 10:50:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:23,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:23,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:23,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:23,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:23,169 INFO L87 Difference]: Start difference. First operand 889 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:23,205 INFO L93 Difference]: Finished difference Result 1099 states and 1931 transitions. [2024-12-02 10:50:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:23,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 10:50:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:23,211 INFO L225 Difference]: With dead ends: 1099 [2024-12-02 10:50:23,211 INFO L226 Difference]: Without dead ends: 986 [2024-12-02 10:50:23,212 INFO L434 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 [2024-12-02 10:50:23,212 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:23,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-12-02 10:50:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-12-02 10:50:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.7922606924643585) internal successors, (1760), 983 states have internal predecessors, (1760), 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) [2024-12-02 10:50:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1760 transitions. [2024-12-02 10:50:23,245 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1760 transitions. Word has length 40 [2024-12-02 10:50:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:23,245 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1760 transitions. [2024-12-02 10:50:23,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1760 transitions. [2024-12-02 10:50:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 10:50:23,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:23,246 INFO L218 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] [2024-12-02 10:50:23,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:50:23,246 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:23,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 10:50:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108228920] [2024-12-02 10:50:23,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:23,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:23,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:23,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108228920] [2024-12-02 10:50:23,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108228920] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:23,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:23,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:23,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67443743] [2024-12-02 10:50:23,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:23,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:23,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:23,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:23,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:23,311 INFO L87 Difference]: Start difference. First operand 984 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:23,352 INFO L93 Difference]: Finished difference Result 1368 states and 2302 transitions. [2024-12-02 10:50:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 10:50:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:23,358 INFO L225 Difference]: With dead ends: 1368 [2024-12-02 10:50:23,358 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 10:50:23,359 INFO L434 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 [2024-12-02 10:50:23,359 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:23,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 10:50:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-12-02 10:50:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1156 states have (on average 1.7249134948096885) internal successors, (1994), 1157 states have internal predecessors, (1994), 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) [2024-12-02 10:50:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1994 transitions. [2024-12-02 10:50:23,402 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1994 transitions. Word has length 40 [2024-12-02 10:50:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:23,402 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1994 transitions. [2024-12-02 10:50:23,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1994 transitions. [2024-12-02 10:50:23,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 10:50:23,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:23,403 INFO L218 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] [2024-12-02 10:50:23,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:50:23,404 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:23,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 10:50:23,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:23,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648468216] [2024-12-02 10:50:23,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:23,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648468216] [2024-12-02 10:50:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648468216] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:23,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:23,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218224605] [2024-12-02 10:50:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:23,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:23,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:23,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:23,465 INFO L87 Difference]: Start difference. First operand 1158 states and 1994 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:23,508 INFO L93 Difference]: Finished difference Result 1581 states and 2592 transitions. [2024-12-02 10:50:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:23,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 10:50:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:23,515 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 10:50:23,515 INFO L226 Difference]: Without dead ends: 1355 [2024-12-02 10:50:23,516 INFO L434 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 [2024-12-02 10:50:23,517 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:23,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:23,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-12-02 10:50:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-12-02 10:50:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 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) [2024-12-02 10:50:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-12-02 10:50:23,564 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-12-02 10:50:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:23,564 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-12-02 10:50:23,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 10:50:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-12-02 10:50:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 10:50:23,565 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:23,565 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:23,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:50:23,565 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:23,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 12088885, now seen corresponding path program 1 times [2024-12-02 10:50:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700459597] [2024-12-02 10:50:23,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700459597] [2024-12-02 10:50:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700459597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:23,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:23,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:50:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247694307] [2024-12-02 10:50:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:23,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:23,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:23,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:23,646 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-12-02 10:50:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:28,013 INFO L93 Difference]: Finished difference Result 2857 states and 5130 transitions. [2024-12-02 10:50:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:28,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2024-12-02 10:50:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:28,023 INFO L225 Difference]: With dead ends: 2857 [2024-12-02 10:50:28,023 INFO L226 Difference]: Without dead ends: 2104 [2024-12-02 10:50:28,025 INFO L434 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 [2024-12-02 10:50:28,025 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 837 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:28,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 147 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 10:50:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2024-12-02 10:50:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2104. [2024-12-02 10:50:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.7278782112274025) internal successors, (3632), 2103 states have internal predecessors, (3632), 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) [2024-12-02 10:50:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3632 transitions. [2024-12-02 10:50:28,090 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3632 transitions. Word has length 48 [2024-12-02 10:50:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:28,090 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3632 transitions. [2024-12-02 10:50:28,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-12-02 10:50:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3632 transitions. [2024-12-02 10:50:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 10:50:28,092 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:28,092 INFO L218 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, 1, 1, 1, 1] [2024-12-02 10:50:28,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:50:28,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:28,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 10:50:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74918508] [2024-12-02 10:50:28,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:50:28,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74918508] [2024-12-02 10:50:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74918508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:28,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:28,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406453954] [2024-12-02 10:50:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:28,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:28,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:28,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:28,295 INFO L87 Difference]: Start difference. First operand 2104 states and 3632 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-12-02 10:50:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:28,421 INFO L93 Difference]: Finished difference Result 3960 states and 6184 transitions. [2024-12-02 10:50:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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 56 [2024-12-02 10:50:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:28,435 INFO L225 Difference]: With dead ends: 3960 [2024-12-02 10:50:28,435 INFO L226 Difference]: Without dead ends: 3386 [2024-12-02 10:50:28,437 INFO L434 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 [2024-12-02 10:50:28,438 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3042 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:28,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 3159 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:50:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-12-02 10:50:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-12-02 10:50:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.649962602842184) internal successors, (4412), 2675 states have internal predecessors, (4412), 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) [2024-12-02 10:50:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4412 transitions. [2024-12-02 10:50:28,522 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4412 transitions. Word has length 56 [2024-12-02 10:50:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4412 transitions. [2024-12-02 10:50:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-12-02 10:50:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4412 transitions. [2024-12-02 10:50:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 10:50:28,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:28,524 INFO L218 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, 1, 1, 1, 1] [2024-12-02 10:50:28,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:50:28,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:28,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 10:50:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:28,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119591670] [2024-12-02 10:50:28,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 10:50:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119591670] [2024-12-02 10:50:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119591670] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:28,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:28,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:28,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938693754] [2024-12-02 10:50:28,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:28,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:28,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:28,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:28,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:28,669 INFO L87 Difference]: Start difference. First operand 2676 states and 4412 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 10:50:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:28,796 INFO L93 Difference]: Finished difference Result 4532 states and 6964 transitions. [2024-12-02 10:50:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 [2024-12-02 10:50:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:28,809 INFO L225 Difference]: With dead ends: 4532 [2024-12-02 10:50:28,809 INFO L226 Difference]: Without dead ends: 3958 [2024-12-02 10:50:28,811 INFO L434 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 [2024-12-02 10:50:28,812 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:28,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-12-02 10:50:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-12-02 10:50:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5766836445953594) internal successors, (5572), 3535 states have internal predecessors, (5572), 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) [2024-12-02 10:50:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5572 transitions. [2024-12-02 10:50:28,920 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5572 transitions. Word has length 56 [2024-12-02 10:50:28,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:28,921 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5572 transitions. [2024-12-02 10:50:28,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 10:50:28,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5572 transitions. [2024-12-02 10:50:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 10:50:28,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:28,922 INFO L218 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, 1, 1, 1, 1] [2024-12-02 10:50:28,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:50:28,922 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:28,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 10:50:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:28,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541712193] [2024-12-02 10:50:28,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:28,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:50:29,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:29,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541712193] [2024-12-02 10:50:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541712193] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:50:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095424442] [2024-12-02 10:50:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:29,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:50:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:29,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:50:29,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:50:29,055 INFO L87 Difference]: Start difference. First operand 3536 states and 5572 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-12-02 10:50:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:29,180 INFO L93 Difference]: Finished difference Result 4792 states and 7328 transitions. [2024-12-02 10:50:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:50:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 [2024-12-02 10:50:29,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:29,195 INFO L225 Difference]: With dead ends: 4792 [2024-12-02 10:50:29,195 INFO L226 Difference]: Without dead ends: 4374 [2024-12-02 10:50:29,197 INFO L434 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 [2024-12-02 10:50:29,198 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:29,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-12-02 10:50:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-12-02 10:50:29,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5564556962025315) internal successors, (6148), 3951 states have internal predecessors, (6148), 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) [2024-12-02 10:50:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6148 transitions. [2024-12-02 10:50:29,371 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6148 transitions. Word has length 56 [2024-12-02 10:50:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:29,372 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6148 transitions. [2024-12-02 10:50:29,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-12-02 10:50:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6148 transitions. [2024-12-02 10:50:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 10:50:29,374 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:29,374 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:29,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:50:29,375 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:29,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 10:50:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699058184] [2024-12-02 10:50:29,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699058184] [2024-12-02 10:50:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699058184] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:29,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:29,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554802122] [2024-12-02 10:50:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:29,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:29,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:29,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:29,509 INFO L87 Difference]: Start difference. First operand 3952 states and 6148 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:50:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:29,600 INFO L93 Difference]: Finished difference Result 6376 states and 9458 transitions. [2024-12-02 10:50:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 10:50:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:29,624 INFO L225 Difference]: With dead ends: 6376 [2024-12-02 10:50:29,628 INFO L226 Difference]: Without dead ends: 3954 [2024-12-02 10:50:29,632 INFO L434 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 [2024-12-02 10:50:29,635 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 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 [2024-12-02 10:50:29,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-12-02 10:50:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-12-02 10:50:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5437974683544304) internal successors, (6098), 3951 states have internal predecessors, (6098), 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) [2024-12-02 10:50:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6098 transitions. [2024-12-02 10:50:29,735 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6098 transitions. Word has length 57 [2024-12-02 10:50:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:29,736 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6098 transitions. [2024-12-02 10:50:29,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:50:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6098 transitions. [2024-12-02 10:50:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 10:50:29,737 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:29,737 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:29,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:50:29,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:29,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 10:50:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370853969] [2024-12-02 10:50:29,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370853969] [2024-12-02 10:50:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370853969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:29,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:29,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504789342] [2024-12-02 10:50:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:29,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:29,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:29,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:29,812 INFO L87 Difference]: Start difference. First operand 3952 states and 6098 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 10:50:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:29,847 INFO L93 Difference]: Finished difference Result 4908 states and 7395 transitions. [2024-12-02 10:50:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2024-12-02 10:50:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:29,856 INFO L225 Difference]: With dead ends: 4908 [2024-12-02 10:50:29,856 INFO L226 Difference]: Without dead ends: 2486 [2024-12-02 10:50:29,858 INFO L434 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 [2024-12-02 10:50:29,859 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 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 [2024-12-02 10:50:29,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-12-02 10:50:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-12-02 10:50:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6602020202020202) internal successors, (4109), 2476 states have internal predecessors, (4109), 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) [2024-12-02 10:50:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4109 transitions. [2024-12-02 10:50:29,901 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4109 transitions. Word has length 58 [2024-12-02 10:50:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:29,901 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4109 transitions. [2024-12-02 10:50:29,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 10:50:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4109 transitions. [2024-12-02 10:50:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 10:50:29,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:29,902 INFO L218 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:29,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:50:29,903 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:29,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 10:50:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708821215] [2024-12-02 10:50:29,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708821215] [2024-12-02 10:50:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708821215] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:50:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:50:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:50:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152919037] [2024-12-02 10:50:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:50:29,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:50:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:29,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:50:29,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:50:29,973 INFO L87 Difference]: Start difference. First operand 2477 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-12-02 10:50:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:30,018 INFO L93 Difference]: Finished difference Result 2949 states and 4741 transitions. [2024-12-02 10:50:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:50:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2024-12-02 10:50:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:30,024 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 10:50:30,024 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 10:50:30,025 INFO L434 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 [2024-12-02 10:50:30,026 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 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 [2024-12-02 10:50:30,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 10:50:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-12-02 10:50:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.7289486796213254) internal successors, (3470), 2008 states have internal predecessors, (3470), 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) [2024-12-02 10:50:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3470 transitions. [2024-12-02 10:50:30,055 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3470 transitions. Word has length 59 [2024-12-02 10:50:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:30,055 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3470 transitions. [2024-12-02 10:50:30,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-12-02 10:50:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3470 transitions. [2024-12-02 10:50:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 10:50:30,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:30,056 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:30,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 10:50:30,057 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:30,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 10:50:30,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405890392] [2024-12-02 10:50:30,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:50:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405890392] [2024-12-02 10:50:30,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405890392] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110558145] [2024-12-02 10:50:30,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:30,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:30,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:50:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:30,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 10:50:30,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:50:30,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:50:30,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110558145] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:30,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:30,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-12-02 10:50:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836243612] [2024-12-02 10:50:30,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:30,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 10:50:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:30,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 10:50:30,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:50:30,961 INFO L87 Difference]: Start difference. First operand 2009 states and 3470 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2024-12-02 10:50:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:31,064 INFO L93 Difference]: Finished difference Result 3126 states and 4919 transitions. [2024-12-02 10:50:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:50:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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 61 [2024-12-02 10:50:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:31,070 INFO L225 Difference]: With dead ends: 3126 [2024-12-02 10:50:31,071 INFO L226 Difference]: Without dead ends: 2656 [2024-12-02 10:50:31,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:50:31,072 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 1501 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 6166 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:31,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 6166 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:50:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2024-12-02 10:50:31,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2592. [2024-12-02 10:50:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2590 states have (on average 1.6135135135135135) internal successors, (4179), 2591 states have internal predecessors, (4179), 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) [2024-12-02 10:50:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 4179 transitions. [2024-12-02 10:50:31,119 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 4179 transitions. Word has length 61 [2024-12-02 10:50:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:31,120 INFO L471 AbstractCegarLoop]: Abstraction has 2592 states and 4179 transitions. [2024-12-02 10:50:31,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2024-12-02 10:50:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 4179 transitions. [2024-12-02 10:50:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 10:50:31,121 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:31,121 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:31,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:50:31,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:50:31,321 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:31,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1754593394, now seen corresponding path program 1 times [2024-12-02 10:50:31,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:31,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149764845] [2024-12-02 10:50:31,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:31,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149764845] [2024-12-02 10:50:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149764845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035798442] [2024-12-02 10:50:31,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:31,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:31,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:31,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:50:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:31,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 10:50:31,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:32,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035798442] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:33,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 10:50:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987440069] [2024-12-02 10:50:33,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:33,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 10:50:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:33,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 10:50:33,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:50:33,305 INFO L87 Difference]: Start difference. First operand 2592 states and 4179 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 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) [2024-12-02 10:50:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:33,715 INFO L93 Difference]: Finished difference Result 4488 states and 6565 transitions. [2024-12-02 10:50:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 10:50:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 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 62 [2024-12-02 10:50:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:33,720 INFO L225 Difference]: With dead ends: 4488 [2024-12-02 10:50:33,720 INFO L226 Difference]: Without dead ends: 3520 [2024-12-02 10:50:33,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2024-12-02 10:50:33,722 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 18175 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18175 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:33,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18175 Valid, 6096 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:50:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2024-12-02 10:50:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3516. [2024-12-02 10:50:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3514 states have (on average 1.5139442231075697) internal successors, (5320), 3515 states have internal predecessors, (5320), 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) [2024-12-02 10:50:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 5320 transitions. [2024-12-02 10:50:33,789 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 5320 transitions. Word has length 62 [2024-12-02 10:50:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:33,789 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 5320 transitions. [2024-12-02 10:50:33,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 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) [2024-12-02 10:50:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 5320 transitions. [2024-12-02 10:50:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 10:50:33,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:33,790 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:33,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:50:33,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:50:33,990 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:33,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1327227278, now seen corresponding path program 1 times [2024-12-02 10:50:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947511239] [2024-12-02 10:50:33,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947511239] [2024-12-02 10:50:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947511239] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441580486] [2024-12-02 10:50:34,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:34,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:34,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:34,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:34,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:50:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:34,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 10:50:34,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:36,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441580486] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:39,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 41 [2024-12-02 10:50:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157696597] [2024-12-02 10:50:39,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:39,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 10:50:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:39,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 10:50:39,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 10:50:39,551 INFO L87 Difference]: Start difference. First operand 3516 states and 5320 transitions. Second operand has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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) [2024-12-02 10:50:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:43,976 INFO L93 Difference]: Finished difference Result 10486 states and 14051 transitions. [2024-12-02 10:50:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 10:50:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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 62 [2024-12-02 10:50:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:43,996 INFO L225 Difference]: With dead ends: 10486 [2024-12-02 10:50:43,997 INFO L226 Difference]: Without dead ends: 8669 [2024-12-02 10:50:44,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1793, Invalid=5863, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 10:50:44,002 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 15185 mSDsluCounter, 14121 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15185 SdHoareTripleChecker+Valid, 15628 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:44,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15185 Valid, 15628 Invalid, 1154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 10:50:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2024-12-02 10:50:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 4200. [2024-12-02 10:50:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 4198 states have (on average 1.4640304907098618) internal successors, (6146), 4199 states have internal predecessors, (6146), 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) [2024-12-02 10:50:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 6146 transitions. [2024-12-02 10:50:44,163 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 6146 transitions. Word has length 62 [2024-12-02 10:50:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:44,163 INFO L471 AbstractCegarLoop]: Abstraction has 4200 states and 6146 transitions. [2024-12-02 10:50:44,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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) [2024-12-02 10:50:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 6146 transitions. [2024-12-02 10:50:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 10:50:44,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:44,164 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:44,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:50:44,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:44,365 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1658760105, now seen corresponding path program 1 times [2024-12-02 10:50:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392826600] [2024-12-02 10:50:44,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:44,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392826600] [2024-12-02 10:50:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392826600] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569032336] [2024-12-02 10:50:44,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:44,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:44,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:44,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:50:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:44,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 10:50:44,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:46,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569032336] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:48,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 37 [2024-12-02 10:50:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720291437] [2024-12-02 10:50:48,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:48,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 10:50:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:48,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 10:50:48,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 10:50:48,067 INFO L87 Difference]: Start difference. First operand 4200 states and 6146 transitions. Second operand has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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) [2024-12-02 10:50:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:52,073 INFO L93 Difference]: Finished difference Result 15677 states and 20346 transitions. [2024-12-02 10:50:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 10:50:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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 63 [2024-12-02 10:50:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:52,097 INFO L225 Difference]: With dead ends: 15677 [2024-12-02 10:50:52,098 INFO L226 Difference]: Without dead ends: 13199 [2024-12-02 10:50:52,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6268, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 10:50:52,103 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 14721 mSDsluCounter, 12726 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14721 SdHoareTripleChecker+Valid, 14231 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:52,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14721 Valid, 14231 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 10:50:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2024-12-02 10:50:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 6786. [2024-12-02 10:50:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6786 states, 6784 states have (on average 1.3658608490566038) internal successors, (9266), 6785 states have internal predecessors, (9266), 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) [2024-12-02 10:50:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6786 states to 6786 states and 9266 transitions. [2024-12-02 10:50:52,315 INFO L78 Accepts]: Start accepts. Automaton has 6786 states and 9266 transitions. Word has length 63 [2024-12-02 10:50:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:52,315 INFO L471 AbstractCegarLoop]: Abstraction has 6786 states and 9266 transitions. [2024-12-02 10:50:52,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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) [2024-12-02 10:50:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6786 states and 9266 transitions. [2024-12-02 10:50:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 10:50:52,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:52,316 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:50:52,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:50:52,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:52,516 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:52,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1827537694, now seen corresponding path program 1 times [2024-12-02 10:50:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586515537] [2024-12-02 10:50:52,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586515537] [2024-12-02 10:50:54,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586515537] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497365005] [2024-12-02 10:50:54,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:54,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:54,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:54,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:54,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:50:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:54,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 10:50:54,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:50:57,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497365005] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:51:01,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:51:01,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 57 [2024-12-02 10:51:01,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407281036] [2024-12-02 10:51:01,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:01,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 10:51:01,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:01,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 10:51:01,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 10:51:01,039 INFO L87 Difference]: Start difference. First operand 6786 states and 9266 transitions. Second operand has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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) [2024-12-02 10:51:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:21,472 INFO L93 Difference]: Finished difference Result 16856 states and 21601 transitions. [2024-12-02 10:51:21,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-12-02 10:51:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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 64 [2024-12-02 10:51:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:21,495 INFO L225 Difference]: With dead ends: 16856 [2024-12-02 10:51:21,495 INFO L226 Difference]: Without dead ends: 13023 [2024-12-02 10:51:21,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5950 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=3566, Invalid=17314, Unknown=0, NotChecked=0, Total=20880 [2024-12-02 10:51:21,502 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 28388 mSDsluCounter, 23558 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28388 SdHoareTripleChecker+Valid, 25066 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:21,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28388 Valid, 25066 Invalid, 2303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:51:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13023 states. [2024-12-02 10:51:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13023 to 7222. [2024-12-02 10:51:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7222 states, 7220 states have (on average 1.3565096952908586) internal successors, (9794), 7221 states have internal predecessors, (9794), 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) [2024-12-02 10:51:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7222 states to 7222 states and 9794 transitions. [2024-12-02 10:51:21,837 INFO L78 Accepts]: Start accepts. Automaton has 7222 states and 9794 transitions. Word has length 64 [2024-12-02 10:51:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:21,837 INFO L471 AbstractCegarLoop]: Abstraction has 7222 states and 9794 transitions. [2024-12-02 10:51:21,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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) [2024-12-02 10:51:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7222 states and 9794 transitions. [2024-12-02 10:51:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 10:51:21,838 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:21,838 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:21,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:51:22,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:22,039 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1994217637, now seen corresponding path program 1 times [2024-12-02 10:51:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578065852] [2024-12-02 10:51:22,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:22,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:22,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578065852] [2024-12-02 10:51:22,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578065852] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:22,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061982623] [2024-12-02 10:51:22,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:22,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:22,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:51:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:23,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 10:51:23,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:23,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061982623] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:51:25,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:51:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-12-02 10:51:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390790055] [2024-12-02 10:51:25,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:25,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 10:51:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:25,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 10:51:25,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 10:51:25,010 INFO L87 Difference]: Start difference. First operand 7222 states and 9794 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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) [2024-12-02 10:51:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:27,901 INFO L93 Difference]: Finished difference Result 16575 states and 21425 transitions. [2024-12-02 10:51:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 10:51:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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 65 [2024-12-02 10:51:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:27,917 INFO L225 Difference]: With dead ends: 16575 [2024-12-02 10:51:27,917 INFO L226 Difference]: Without dead ends: 14219 [2024-12-02 10:51:27,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=580, Invalid=2390, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 10:51:27,924 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 13754 mSDsluCounter, 12258 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13754 SdHoareTripleChecker+Valid, 13753 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:27,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13754 Valid, 13753 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:51:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14219 states. [2024-12-02 10:51:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 6929. [2024-12-02 10:51:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6927 states have (on average 1.3635051248736827) internal successors, (9445), 6928 states have internal predecessors, (9445), 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) [2024-12-02 10:51:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 9445 transitions. [2024-12-02 10:51:28,386 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 9445 transitions. Word has length 65 [2024-12-02 10:51:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:28,386 INFO L471 AbstractCegarLoop]: Abstraction has 6929 states and 9445 transitions. [2024-12-02 10:51:28,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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) [2024-12-02 10:51:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 9445 transitions. [2024-12-02 10:51:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:51:28,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:28,388 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:28,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:51:28,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:28,588 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:28,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash 260849486, now seen corresponding path program 1 times [2024-12-02 10:51:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58783471] [2024-12-02 10:51:28,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:29,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:29,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58783471] [2024-12-02 10:51:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58783471] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584759445] [2024-12-02 10:51:29,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:29,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:29,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:29,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:29,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:51:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:29,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 10:51:29,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:30,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584759445] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:51:32,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:51:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 44 [2024-12-02 10:51:32,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054768588] [2024-12-02 10:51:32,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:32,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 10:51:32,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:32,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 10:51:32,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 10:51:32,401 INFO L87 Difference]: Start difference. First operand 6929 states and 9445 transitions. Second operand has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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) [2024-12-02 10:51:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:40,526 INFO L93 Difference]: Finished difference Result 13721 states and 17811 transitions. [2024-12-02 10:51:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-02 10:51:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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 104 [2024-12-02 10:51:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:40,535 INFO L225 Difference]: With dead ends: 13721 [2024-12-02 10:51:40,535 INFO L226 Difference]: Without dead ends: 10021 [2024-12-02 10:51:40,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1932, Invalid=9840, Unknown=0, NotChecked=0, Total=11772 [2024-12-02 10:51:40,540 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 20189 mSDsluCounter, 25415 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20189 SdHoareTripleChecker+Valid, 26952 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:40,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20189 Valid, 26952 Invalid, 2613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 10:51:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10021 states. [2024-12-02 10:51:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10021 to 8015. [2024-12-02 10:51:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8015 states, 8013 states have (on average 1.3429427180831148) internal successors, (10761), 8014 states have internal predecessors, (10761), 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) [2024-12-02 10:51:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8015 states to 8015 states and 10761 transitions. [2024-12-02 10:51:40,916 INFO L78 Accepts]: Start accepts. Automaton has 8015 states and 10761 transitions. Word has length 104 [2024-12-02 10:51:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:40,917 INFO L471 AbstractCegarLoop]: Abstraction has 8015 states and 10761 transitions. [2024-12-02 10:51:40,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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) [2024-12-02 10:51:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8015 states and 10761 transitions. [2024-12-02 10:51:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:51:40,919 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:40,919 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:40,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:51:41,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 10:51:41,120 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:41,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2075020846, now seen corresponding path program 1 times [2024-12-02 10:51:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:41,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301751644] [2024-12-02 10:51:41,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301751644] [2024-12-02 10:51:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301751644] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779852937] [2024-12-02 10:51:41,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:41,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:41,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:41,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:41,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:51:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:42,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 10:51:42,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:45,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:52,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779852937] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:51:52,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:51:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 24] total 61 [2024-12-02 10:51:52,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879900293] [2024-12-02 10:51:52,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:52,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 10:51:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:52,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 10:51:52,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3311, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 10:51:52,620 INFO L87 Difference]: Start difference. First operand 8015 states and 10761 transitions. Second operand has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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) [2024-12-02 10:53:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:53:14,712 INFO L93 Difference]: Finished difference Result 19809 states and 25212 transitions. [2024-12-02 10:53:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2024-12-02 10:53:14,713 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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 104 [2024-12-02 10:53:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:53:14,724 INFO L225 Difference]: With dead ends: 19809 [2024-12-02 10:53:14,724 INFO L226 Difference]: Without dead ends: 14784 [2024-12-02 10:53:14,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26103 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=10928, Invalid=56412, Unknown=0, NotChecked=0, Total=67340 [2024-12-02 10:53:14,732 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 38659 mSDsluCounter, 26387 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38659 SdHoareTripleChecker+Valid, 28066 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:53:14,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38659 Valid, 28066 Invalid, 4440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 10:53:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14784 states. [2024-12-02 10:53:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14784 to 11560. [2024-12-02 10:53:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11560 states, 11558 states have (on average 1.302560996712234) internal successors, (15055), 11559 states have internal predecessors, (15055), 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) [2024-12-02 10:53:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11560 states to 11560 states and 15055 transitions. [2024-12-02 10:53:15,565 INFO L78 Accepts]: Start accepts. Automaton has 11560 states and 15055 transitions. Word has length 104 [2024-12-02 10:53:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:53:15,565 INFO L471 AbstractCegarLoop]: Abstraction has 11560 states and 15055 transitions. [2024-12-02 10:53:15,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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) [2024-12-02 10:53:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 11560 states and 15055 transitions. [2024-12-02 10:53:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:53:15,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:53:15,567 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:53:15,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 10:53:15,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 10:53:15,767 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:53:15,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:53:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1449418917, now seen corresponding path program 1 times [2024-12-02 10:53:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:53:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836572538] [2024-12-02 10:53:15,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:15,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:53:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:53:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:53:17,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:53:17,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836572538] [2024-12-02 10:53:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836572538] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:53:17,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355723831] [2024-12-02 10:53:17,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:17,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:53:17,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:53:17,372 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:53:17,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:53:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:53:17,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 10:53:17,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:53:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:53:21,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:53:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:53:33,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355723831] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:53:33,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:53:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 24] total 69 [2024-12-02 10:53:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254483307] [2024-12-02 10:53:33,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:53:33,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 10:53:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:53:33,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 10:53:33,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=4160, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 10:53:33,566 INFO L87 Difference]: Start difference. First operand 11560 states and 15055 transitions. Second operand has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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) [2024-12-02 10:54:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:54:18,102 INFO L93 Difference]: Finished difference Result 15833 states and 20279 transitions. [2024-12-02 10:54:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 10:54:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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 105 [2024-12-02 10:54:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:54:18,111 INFO L225 Difference]: With dead ends: 15833 [2024-12-02 10:54:18,111 INFO L226 Difference]: Without dead ends: 12241 [2024-12-02 10:54:18,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7003 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=4167, Invalid=20013, Unknown=0, NotChecked=0, Total=24180 [2024-12-02 10:54:18,115 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 26223 mSDsluCounter, 30411 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26223 SdHoareTripleChecker+Valid, 31912 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:54:18,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26223 Valid, 31912 Invalid, 2269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 10:54:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12241 states. [2024-12-02 10:54:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12241 to 12071. [2024-12-02 10:54:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12071 states, 12069 states have (on average 1.2959648686718037) internal successors, (15641), 12070 states have internal predecessors, (15641), 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) [2024-12-02 10:54:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12071 states to 12071 states and 15641 transitions. [2024-12-02 10:54:18,951 INFO L78 Accepts]: Start accepts. Automaton has 12071 states and 15641 transitions. Word has length 105 [2024-12-02 10:54:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:54:18,951 INFO L471 AbstractCegarLoop]: Abstraction has 12071 states and 15641 transitions. [2024-12-02 10:54:18,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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) [2024-12-02 10:54:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 12071 states and 15641 transitions. [2024-12-02 10:54:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:54:18,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:54:18,953 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:54:18,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 10:54:19,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 10:54:19,153 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:54:19,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:54:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash 886549339, now seen corresponding path program 1 times [2024-12-02 10:54:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:54:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332568600] [2024-12-02 10:54:19,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:54:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:54:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:54:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:54:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:54:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332568600] [2024-12-02 10:54:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332568600] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:54:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194727307] [2024-12-02 10:54:19,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:54:19,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:54:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:54:19,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:54:19,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:54:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:54:20,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 10:54:20,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:54:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:54:22,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:54:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:54:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194727307] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:54:29,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:54:29,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 23] total 65 [2024-12-02 10:54:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619331745] [2024-12-02 10:54:29,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:54:29,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 10:54:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:54:29,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 10:54:29,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=3819, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 10:54:29,930 INFO L87 Difference]: Start difference. First operand 12071 states and 15641 transitions. Second operand has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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) [2024-12-02 10:57:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:57:08,281 INFO L93 Difference]: Finished difference Result 34391 states and 43303 transitions. [2024-12-02 10:57:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2024-12-02 10:57:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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 105 [2024-12-02 10:57:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:57:08,300 INFO L225 Difference]: With dead ends: 34391 [2024-12-02 10:57:08,301 INFO L226 Difference]: Without dead ends: 29565 [2024-12-02 10:57:08,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41894 ImplicationChecksByTransitivity, 153.6s TimeCoverageRelationStatistics Valid=13020, Invalid=98202, Unknown=0, NotChecked=0, Total=111222 [2024-12-02 10:57:08,309 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 22580 mSDsluCounter, 35023 mSDsCounter, 0 mSdLazyCounter, 4598 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22580 SdHoareTripleChecker+Valid, 36581 SdHoareTripleChecker+Invalid, 4793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 4598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:57:08,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22580 Valid, 36581 Invalid, 4793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 4598 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 10:57:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29565 states. [2024-12-02 10:57:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29565 to 18447. [2024-12-02 10:57:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18445 states have (on average 1.2722146923285442) internal successors, (23466), 18446 states have internal predecessors, (23466), 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) [2024-12-02 10:57:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 23466 transitions. [2024-12-02 10:57:09,924 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 23466 transitions. Word has length 105 [2024-12-02 10:57:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:57:09,925 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 23466 transitions. [2024-12-02 10:57:09,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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) [2024-12-02 10:57:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 23466 transitions. [2024-12-02 10:57:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:57:09,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:57:09,926 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:57:09,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 10:57:10,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 10:57:10,127 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:57:10,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:57:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1118181688, now seen corresponding path program 1 times [2024-12-02 10:57:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:57:10,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638622858] [2024-12-02 10:57:10,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:57:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:57:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:57:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:57:11,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:57:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638622858] [2024-12-02 10:57:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638622858] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:57:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984028479] [2024-12-02 10:57:11,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:57:11,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:57:11,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:57:11,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:57:11,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:57:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:57:11,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 10:57:11,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:57:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:57:13,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:57:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:57:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984028479] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:57:18,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:57:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 19] total 64 [2024-12-02 10:57:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857730663] [2024-12-02 10:57:18,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:57:18,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 10:57:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:57:18,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 10:57:18,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 10:57:18,628 INFO L87 Difference]: Start difference. First operand 18447 states and 23466 transitions. Second operand has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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) [2024-12-02 10:57:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:57:54,194 INFO L93 Difference]: Finished difference Result 42828 states and 53281 transitions. [2024-12-02 10:57:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-12-02 10:57:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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 106 [2024-12-02 10:57:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:57:54,214 INFO L225 Difference]: With dead ends: 42828 [2024-12-02 10:57:54,214 INFO L226 Difference]: Without dead ends: 27152 [2024-12-02 10:57:54,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13755 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=6195, Invalid=36861, Unknown=0, NotChecked=0, Total=43056 [2024-12-02 10:57:54,223 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 34055 mSDsluCounter, 38248 mSDsCounter, 0 mSdLazyCounter, 3418 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34055 SdHoareTripleChecker+Valid, 39822 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:57:54,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34055 Valid, 39822 Invalid, 3604 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [186 Valid, 3418 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 10:57:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27152 states. [2024-12-02 10:57:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27152 to 24433. [2024-12-02 10:57:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24433 states, 24431 states have (on average 1.2604477917400025) internal successors, (30794), 24432 states have internal predecessors, (30794), 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) [2024-12-02 10:57:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24433 states to 24433 states and 30794 transitions. [2024-12-02 10:57:56,482 INFO L78 Accepts]: Start accepts. Automaton has 24433 states and 30794 transitions. Word has length 106 [2024-12-02 10:57:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:57:56,483 INFO L471 AbstractCegarLoop]: Abstraction has 24433 states and 30794 transitions. [2024-12-02 10:57:56,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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) [2024-12-02 10:57:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 24433 states and 30794 transitions. [2024-12-02 10:57:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 10:57:56,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:57:56,484 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:57:56,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:57:56,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 10:57:56,685 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:57:56,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:57:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 10:57:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:57:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368270924] [2024-12-02 10:57:56,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:57:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:57:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:57:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:57:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:57:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368270924] [2024-12-02 10:57:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368270924] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:57:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027073206] [2024-12-02 10:57:58,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:57:58,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:57:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:57:58,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:57:58,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:57:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:57:58,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 10:57:58,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:58:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:01,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:58:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027073206] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:58:02,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:58:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17, 16] total 58 [2024-12-02 10:58:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678372838] [2024-12-02 10:58:02,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:58:02,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 10:58:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:02,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 10:58:02,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3068, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 10:58:02,997 INFO L87 Difference]: Start difference. First operand 24433 states and 30794 transitions. Second operand has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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) [2024-12-02 10:58:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:21,921 INFO L93 Difference]: Finished difference Result 55346 states and 69012 transitions. [2024-12-02 10:58:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 10:58:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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 107 [2024-12-02 10:58:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:21,953 INFO L225 Difference]: With dead ends: 55346 [2024-12-02 10:58:21,953 INFO L226 Difference]: Without dead ends: 37166 [2024-12-02 10:58:21,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9861 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4658, Invalid=28648, Unknown=0, NotChecked=0, Total=33306 [2024-12-02 10:58:21,967 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 32150 mSDsluCounter, 37937 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32150 SdHoareTripleChecker+Valid, 39480 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:58:21,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32150 Valid, 39480 Invalid, 3376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:58:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37166 states. [2024-12-02 10:58:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37166 to 35870. [2024-12-02 10:58:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35870 states, 35868 states have (on average 1.2610126017620162) internal successors, (45230), 35869 states have internal predecessors, (45230), 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) [2024-12-02 10:58:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35870 states to 35870 states and 45230 transitions. [2024-12-02 10:58:25,607 INFO L78 Accepts]: Start accepts. Automaton has 35870 states and 45230 transitions. Word has length 107 [2024-12-02 10:58:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:25,607 INFO L471 AbstractCegarLoop]: Abstraction has 35870 states and 45230 transitions. [2024-12-02 10:58:25,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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) [2024-12-02 10:58:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 35870 states and 45230 transitions. [2024-12-02 10:58:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 10:58:25,608 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:25,608 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:58:25,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:58:25,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 10:58:25,809 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:25,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1286141199, now seen corresponding path program 1 times [2024-12-02 10:58:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174393612] [2024-12-02 10:58:25,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:27,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174393612] [2024-12-02 10:58:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174393612] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:58:27,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495802213] [2024-12-02 10:58:27,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:27,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:27,292 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:58:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:58:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:27,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 10:58:27,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:58:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 53 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:28,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:58:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 43 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:30,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495802213] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:58:30,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:58:30,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 12] total 48 [2024-12-02 10:58:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156882872] [2024-12-02 10:58:30,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:58:30,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 10:58:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:58:30,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 10:58:30,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2072, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 10:58:30,666 INFO L87 Difference]: Start difference. First operand 35870 states and 45230 transitions. Second operand has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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) [2024-12-02 10:58:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:58:41,660 INFO L93 Difference]: Finished difference Result 83990 states and 104740 transitions. [2024-12-02 10:58:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 10:58:41,660 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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 109 [2024-12-02 10:58:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:58:41,708 INFO L225 Difference]: With dead ends: 83990 [2024-12-02 10:58:41,708 INFO L226 Difference]: Without dead ends: 56088 [2024-12-02 10:58:41,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1675, Invalid=7255, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 10:58:41,724 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 24575 mSDsluCounter, 25828 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24575 SdHoareTripleChecker+Valid, 27415 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:58:41,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24575 Valid, 27415 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 10:58:41,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56088 states. [2024-12-02 10:58:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56088 to 49032. [2024-12-02 10:58:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49032 states, 49030 states have (on average 1.2408525392616765) internal successors, (60839), 49031 states have internal predecessors, (60839), 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) [2024-12-02 10:58:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49032 states to 49032 states and 60839 transitions. [2024-12-02 10:58:47,119 INFO L78 Accepts]: Start accepts. Automaton has 49032 states and 60839 transitions. Word has length 109 [2024-12-02 10:58:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:58:47,119 INFO L471 AbstractCegarLoop]: Abstraction has 49032 states and 60839 transitions. [2024-12-02 10:58:47,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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) [2024-12-02 10:58:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 49032 states and 60839 transitions. [2024-12-02 10:58:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 10:58:47,120 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:58:47,120 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:58:47,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:58:47,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 10:58:47,321 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:58:47,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:58:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 252592076, now seen corresponding path program 1 times [2024-12-02 10:58:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:58:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091453248] [2024-12-02 10:58:47,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:58:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:58:48,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:58:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091453248] [2024-12-02 10:58:48,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091453248] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:58:48,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635959779] [2024-12-02 10:58:48,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:58:48,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:58:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:58:48,485 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:58:48,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:58:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:58:48,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-12-02 10:58:48,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:58:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 10:58:51,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:59:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635959779] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:59:03,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:59:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 34] total 74 [2024-12-02 10:59:03,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697791337] [2024-12-02 10:59:03,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:59:03,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 10:59:03,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:03,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 10:59:03,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=4823, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 10:59:03,445 INFO L87 Difference]: Start difference. First operand 49032 states and 60839 transitions. Second operand has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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) [2024-12-02 11:01:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:12,612 INFO L93 Difference]: Finished difference Result 102640 states and 125460 transitions. [2024-12-02 11:01:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2024-12-02 11:01:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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 110 [2024-12-02 11:01:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:01:12,688 INFO L225 Difference]: With dead ends: 102640 [2024-12-02 11:01:12,688 INFO L226 Difference]: Without dead ends: 81019 [2024-12-02 11:01:12,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41008 ImplicationChecksByTransitivity, 117.0s TimeCoverageRelationStatistics Valid=16171, Invalid=82739, Unknown=0, NotChecked=0, Total=98910 [2024-12-02 11:01:12,714 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 35161 mSDsluCounter, 32022 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35161 SdHoareTripleChecker+Valid, 33550 SdHoareTripleChecker+Invalid, 3977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:01:12,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35161 Valid, 33550 Invalid, 3977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [278 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 11:01:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81019 states. [2024-12-02 11:01:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81019 to 48837. [2024-12-02 11:01:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48837 states, 48835 states have (on average 1.2411590048121224) internal successors, (60612), 48836 states have internal predecessors, (60612), 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) [2024-12-02 11:01:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48837 states to 48837 states and 60612 transitions. [2024-12-02 11:01:19,134 INFO L78 Accepts]: Start accepts. Automaton has 48837 states and 60612 transitions. Word has length 110 [2024-12-02 11:01:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:01:19,135 INFO L471 AbstractCegarLoop]: Abstraction has 48837 states and 60612 transitions. [2024-12-02 11:01:19,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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) [2024-12-02 11:01:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 48837 states and 60612 transitions. [2024-12-02 11:01:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 11:01:19,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:01:19,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:19,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:19,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:19,337 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:01:19,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1573117275, now seen corresponding path program 1 times [2024-12-02 11:01:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162044889] [2024-12-02 11:01:19,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:01:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162044889] [2024-12-02 11:01:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162044889] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:01:19,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:01:19,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:01:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830256015] [2024-12-02 11:01:19,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:01:19,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:01:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:19,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:01:19,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:01:19,451 INFO L87 Difference]: Start difference. First operand 48837 states and 60612 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-12-02 11:01:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:31,769 INFO L93 Difference]: Finished difference Result 52594 states and 67610 transitions. [2024-12-02 11:01:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:01:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2024-12-02 11:01:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:01:31,819 INFO L225 Difference]: With dead ends: 52594 [2024-12-02 11:01:31,819 INFO L226 Difference]: Without dead ends: 51090 [2024-12-02 11:01:31,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:01:31,826 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 2290 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:01:31,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 783 Invalid, 5968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 11:01:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51090 states. [2024-12-02 11:01:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51090 to 51090. [2024-12-02 11:01:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51090 states, 51088 states have (on average 1.2371202630754776) internal successors, (63202), 51089 states have internal predecessors, (63202), 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) [2024-12-02 11:01:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51090 states to 51090 states and 63202 transitions. [2024-12-02 11:01:38,396 INFO L78 Accepts]: Start accepts. Automaton has 51090 states and 63202 transitions. Word has length 121 [2024-12-02 11:01:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:01:38,397 INFO L471 AbstractCegarLoop]: Abstraction has 51090 states and 63202 transitions. [2024-12-02 11:01:38,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-12-02 11:01:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 51090 states and 63202 transitions. [2024-12-02 11:01:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 11:01:38,400 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:01:38,400 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:01:38,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 11:01:38,401 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:01:38,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -811669857, now seen corresponding path program 1 times [2024-12-02 11:01:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286469871] [2024-12-02 11:01:38,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 67 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:01:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286469871] [2024-12-02 11:01:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286469871] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:01:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037132069] [2024-12-02 11:01:39,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:39,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:39,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:39,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:01:39,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 11:01:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:39,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 11:01:39,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 64 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:01:40,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 54 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:01:47,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037132069] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:47,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:47,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 51 [2024-12-02 11:01:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811121862] [2024-12-02 11:01:47,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:47,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 11:01:47,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:47,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 11:01:47,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2362, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 11:01:47,539 INFO L87 Difference]: Start difference. First operand 51090 states and 63202 transitions. Second operand has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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) [2024-12-02 11:02:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:02:33,724 INFO L93 Difference]: Finished difference Result 240668 states and 296114 transitions. [2024-12-02 11:02:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-12-02 11:02:33,724 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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 145 [2024-12-02 11:02:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:02:33,916 INFO L225 Difference]: With dead ends: 240668 [2024-12-02 11:02:33,916 INFO L226 Difference]: Without dead ends: 196848 [2024-12-02 11:02:33,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26155 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=11699, Invalid=59857, Unknown=0, NotChecked=0, Total=71556 [2024-12-02 11:02:33,956 INFO L435 NwaCegarLoop]: 1534 mSDtfsCounter, 28637 mSDsluCounter, 26204 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28637 SdHoareTripleChecker+Valid, 27738 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:02:33,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28637 Valid, 27738 Invalid, 3017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 11:02:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196848 states. [2024-12-02 11:02:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196848 to 102192. [2024-12-02 11:02:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102192 states, 102190 states have (on average 1.2156179665329288) internal successors, (124224), 102191 states have internal predecessors, (124224), 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) [2024-12-02 11:02:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102192 states to 102192 states and 124224 transitions. [2024-12-02 11:02:49,919 INFO L78 Accepts]: Start accepts. Automaton has 102192 states and 124224 transitions. Word has length 145 [2024-12-02 11:02:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:02:49,919 INFO L471 AbstractCegarLoop]: Abstraction has 102192 states and 124224 transitions. [2024-12-02 11:02:49,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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) [2024-12-02 11:02:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 102192 states and 124224 transitions. [2024-12-02 11:02:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 11:02:49,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:02:49,924 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:02:49,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 11:02:50,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 11:02:50,124 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:02:50,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:02:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1451294332, now seen corresponding path program 1 times [2024-12-02 11:02:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:02:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580280649] [2024-12-02 11:02:50,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:02:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:02:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:02:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 86 proven. 160 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:02:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:02:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580280649] [2024-12-02 11:02:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580280649] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:02:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948109589] [2024-12-02 11:02:50,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:02:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:02:50,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:02:50,910 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:02:50,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 11:02:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:02:51,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 11:02:51,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:02:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 117 proven. 129 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:02:53,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:02:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 76 proven. 170 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:02:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948109589] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:02:58,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:02:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 23] total 61 [2024-12-02 11:02:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861034652] [2024-12-02 11:02:58,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:02:58,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 11:02:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:02:58,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 11:02:58,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=3181, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 11:02:58,369 INFO L87 Difference]: Start difference. First operand 102192 states and 124224 transitions. Second operand has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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) [2024-12-02 11:03:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:03:20,712 INFO L93 Difference]: Finished difference Result 184277 states and 223659 transitions. [2024-12-02 11:03:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 11:03:20,713 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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 146 [2024-12-02 11:03:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:03:20,820 INFO L225 Difference]: With dead ends: 184277 [2024-12-02 11:03:20,820 INFO L226 Difference]: Without dead ends: 121071 [2024-12-02 11:03:20,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2298, Invalid=8622, Unknown=0, NotChecked=0, Total=10920 [2024-12-02 11:03:20,844 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 22413 mSDsluCounter, 27719 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22413 SdHoareTripleChecker+Valid, 29277 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:03:20,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22413 Valid, 29277 Invalid, 1449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:03:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121071 states. [2024-12-02 11:03:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121071 to 106126. [2024-12-02 11:03:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106126 states, 106124 states have (on average 1.2136745693716784) internal successors, (128800), 106125 states have internal predecessors, (128800), 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) [2024-12-02 11:03:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106126 states to 106126 states and 128800 transitions. [2024-12-02 11:03:37,352 INFO L78 Accepts]: Start accepts. Automaton has 106126 states and 128800 transitions. Word has length 146 [2024-12-02 11:03:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:03:37,352 INFO L471 AbstractCegarLoop]: Abstraction has 106126 states and 128800 transitions. [2024-12-02 11:03:37,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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) [2024-12-02 11:03:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 106126 states and 128800 transitions. [2024-12-02 11:03:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 11:03:37,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:03:37,357 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:03:37,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 11:03:37,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 11:03:37,558 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:03:37,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:03:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 416290472, now seen corresponding path program 2 times [2024-12-02 11:03:37,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:03:37,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830201916] [2024-12-02 11:03:37,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:03:37,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:03:37,589 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:03:37,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:03:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 39 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:03:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:03:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830201916] [2024-12-02 11:03:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830201916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:03:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773446220] [2024-12-02 11:03:38,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:03:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:03:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:03:38,224 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:03:38,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a0187f-fecd-460d-bb3f-b6a1aa8e791b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 11:03:38,356 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:03:38,357 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:03:38,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 11:03:38,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:03:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 39 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:03:40,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:03:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 42 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:03:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773446220] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:03:43,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:03:43,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 55 [2024-12-02 11:03:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520315375] [2024-12-02 11:03:43,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:03:43,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 11:03:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:03:43,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 11:03:43,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2633, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 11:03:43,853 INFO L87 Difference]: Start difference. First operand 106126 states and 128800 transitions. Second operand has 55 states, 55 states have (on average 7.6909090909090905) internal successors, (423), 55 states have internal predecessors, (423), 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)