./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i --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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/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 d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:42:31,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:42:31,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:42:31,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:42:31,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:42:31,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:42:31,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:42:31,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:42:31,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:42:31,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:42:31,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:42:31,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:42:31,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:42:31,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:42:31,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:42:31,995 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:42:31,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:42:31,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:42:31,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:42:31,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:42:31,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:42:31,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:42:31,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:42:31,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:42:31,997 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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/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 -> d5cca3532c956cbfb3f8d24df68dd431ff61516e63bcc0106c0529c479d6a4ef [2024-12-02 07:42:32,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:42:32,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:42:32,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:42:32,249 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:42:32,249 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:42:32,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2024-12-02 07:42:34,932 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/data/68ebea62a/d70b2f42d0974839a65f6039cb4af045/FLAG4af12e0cb [2024-12-02 07:42:35,228 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:42:35,229 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i [2024-12-02 07:42:35,241 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/data/68ebea62a/d70b2f42d0974839a65f6039cb4af045/FLAG4af12e0cb [2024-12-02 07:42:35,520 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/data/68ebea62a/d70b2f42d0974839a65f6039cb4af045 [2024-12-02 07:42:35,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:42:35,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:42:35,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:42:35,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:42:35,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:42:35,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:35,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6221a930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35, skipping insertion in model container [2024-12-02 07:42:35,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:35,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:42:35,759 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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2024-12-02 07:42:35,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:42:35,853 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:42:35,883 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_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/sv-benchmarks/c/seq-pthread/cs_time_var_mutex.i[23611,23624] [2024-12-02 07:42:35,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:42:35,960 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:42:35,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35 WrapperNode [2024-12-02 07:42:35,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:42:35,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:42:35,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:42:35,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:42:35,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:35,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,007 INFO L138 Inliner]: procedures = 145, calls = 326, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 533 [2024-12-02 07:42:36,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:42:36,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:42:36,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:42:36,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:42:36,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,051 INFO L175 MemorySlicer]: Split 173 memory accesses to 19 slices as follows [2, 8, 8, 8, 29, 21, 7, 8, 8, 13, 6, 5, 13, 5, 17, 5, 0, 5, 5]. 17 percent of accesses are in the largest equivalence class. The 46 initializations are split as follows [2, 3, 3, 3, 9, 9, 3, 3, 3, 0, 2, 0, 0, 0, 6, 0, 0, 0, 0]. The 43 writes are split as follows [0, 2, 2, 2, 11, 6, 2, 2, 2, 1, 2, 1, 1, 1, 5, 1, 0, 1, 1]. [2024-12-02 07:42:36,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,078 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:42:36,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:42:36,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:42:36,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:42:36,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (1/1) ... [2024-12-02 07:42:36,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:42:36,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:42:36,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:42:36,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:42:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-12-02 07:42:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 07:42:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:42:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:42:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2024-12-02 07:42:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2024-12-02 07:42:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-12-02 07:42:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-12-02 07:42:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-12-02 07:42:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-12-02 07:42:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 07:42:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-12-02 07:42:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:42:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2024-12-02 07:42:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2024-12-02 07:42:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:42:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:42:36,398 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:42:36,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:42:37,981 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-12-02 07:42:37,981 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:42:37,992 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:42:37,993 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:42:37,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:42:37 BoogieIcfgContainer [2024-12-02 07:42:37,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:42:37,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:42:37,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:42:37,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:42:37,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:42:35" (1/3) ... [2024-12-02 07:42:38,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640063ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:42:38, skipping insertion in model container [2024-12-02 07:42:38,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:42:35" (2/3) ... [2024-12-02 07:42:38,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640063ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:42:38, skipping insertion in model container [2024-12-02 07:42:38,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:42:37" (3/3) ... [2024-12-02 07:42:38,001 INFO L128 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2024-12-02 07:42:38,017 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:42:38,018 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cs_time_var_mutex.i that has 8 procedures, 147 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 07:42:38,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:42:38,083 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;@2bc7d109, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:42:38,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:42:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 94 states have internal predecessors, (124), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 07:42:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:42:38,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:38,102 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:38,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:38,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash 336567201, now seen corresponding path program 1 times [2024-12-02 07:42:38,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:38,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857256576] [2024-12-02 07:42:38,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:42:38,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:38,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857256576] [2024-12-02 07:42:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857256576] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:38,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:42:38,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:42:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037901860] [2024-12-02 07:42:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:38,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:42:38,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:38,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:42:38,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:42:38,783 INFO L87 Difference]: Start difference. First operand has 147 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 94 states have internal predecessors, (124), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:38,871 INFO L93 Difference]: Finished difference Result 297 states and 474 transitions. [2024-12-02 07:42:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:42:38,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2024-12-02 07:42:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:38,881 INFO L225 Difference]: With dead ends: 297 [2024-12-02 07:42:38,881 INFO L226 Difference]: Without dead ends: 148 [2024-12-02 07:42:38,885 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 07:42:38,888 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 5 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:38,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 409 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:42:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-12-02 07:42:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2024-12-02 07:42:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 91 states have internal predecessors, (117), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 07:42:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 207 transitions. [2024-12-02 07:42:38,933 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 207 transitions. Word has length 144 [2024-12-02 07:42:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:38,934 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 207 transitions. [2024-12-02 07:42:38,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 207 transitions. [2024-12-02 07:42:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:42:38,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:38,939 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:38,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:42:38,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:38,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1556382465, now seen corresponding path program 1 times [2024-12-02 07:42:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019920992] [2024-12-02 07:42:38,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:42:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019920992] [2024-12-02 07:42:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019920992] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:42:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:42:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561501300] [2024-12-02 07:42:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:39,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:42:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:39,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:42:39,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:42:39,362 INFO L87 Difference]: Start difference. First operand 144 states and 207 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:39,406 INFO L93 Difference]: Finished difference Result 287 states and 414 transitions. [2024-12-02 07:42:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:42:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 148 [2024-12-02 07:42:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:39,408 INFO L225 Difference]: With dead ends: 287 [2024-12-02 07:42:39,408 INFO L226 Difference]: Without dead ends: 146 [2024-12-02 07:42:39,409 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 07:42:39,410 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 1 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:39,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 405 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:42:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-12-02 07:42:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2024-12-02 07:42:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 92 states have internal predecessors, (118), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 07:42:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 208 transitions. [2024-12-02 07:42:39,428 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 208 transitions. Word has length 148 [2024-12-02 07:42:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:39,428 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 208 transitions. [2024-12-02 07:42:39,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:39,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 208 transitions. [2024-12-02 07:42:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:42:39,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:39,432 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:39,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:42:39,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:39,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2090278013, now seen corresponding path program 1 times [2024-12-02 07:42:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102899758] [2024-12-02 07:42:39,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:42:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102899758] [2024-12-02 07:42:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102899758] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:42:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421587682] [2024-12-02 07:42:39,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:39,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:39,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:42:39,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:42:39,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:42:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:40,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:42:40,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:42:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:42:40,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:42:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-12-02 07:42:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421587682] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:42:40,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:42:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-12-02 07:42:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610649168] [2024-12-02 07:42:40,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:42:40,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:42:40,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:40,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:42:40,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:42:40,578 INFO L87 Difference]: Start difference. First operand 145 states and 208 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 07:42:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:40,627 INFO L93 Difference]: Finished difference Result 291 states and 419 transitions. [2024-12-02 07:42:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:42:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 150 [2024-12-02 07:42:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:40,630 INFO L225 Difference]: With dead ends: 291 [2024-12-02 07:42:40,630 INFO L226 Difference]: Without dead ends: 149 [2024-12-02 07:42:40,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:42:40,631 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:40,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 606 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:42:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-12-02 07:42:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-12-02 07:42:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 96 states have internal predecessors, (122), 45 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 07:42:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 212 transitions. [2024-12-02 07:42:40,646 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 212 transitions. Word has length 150 [2024-12-02 07:42:40,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:40,646 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 212 transitions. [2024-12-02 07:42:40,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 07:42:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 212 transitions. [2024-12-02 07:42:40,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 07:42:40,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:40,649 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:42:40,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:42:40,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:40,850 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:40,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1272627829, now seen corresponding path program 2 times [2024-12-02 07:42:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:40,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434760475] [2024-12-02 07:42:40,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:42:40,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:41,002 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:42:41,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:42:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2024-12-02 07:42:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434760475] [2024-12-02 07:42:41,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434760475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:41,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:42:41,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:42:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961532156] [2024-12-02 07:42:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:41,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:42:41,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:41,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:42:41,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:42:41,208 INFO L87 Difference]: Start difference. First operand 149 states and 212 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:41,259 INFO L93 Difference]: Finished difference Result 282 states and 411 transitions. [2024-12-02 07:42:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:42:41,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 154 [2024-12-02 07:42:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:41,263 INFO L225 Difference]: With dead ends: 282 [2024-12-02 07:42:41,263 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 07:42:41,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:42:41,264 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 142 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:41,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 675 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:42:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 07:42:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-12-02 07:42:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 150 states have (on average 1.3133333333333332) internal successors, (197), 150 states have internal predecessors, (197), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2024-12-02 07:42:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 337 transitions. [2024-12-02 07:42:41,299 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 337 transitions. Word has length 154 [2024-12-02 07:42:41,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:41,300 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 337 transitions. [2024-12-02 07:42:41,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 07:42:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 337 transitions. [2024-12-02 07:42:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-12-02 07:42:41,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:41,305 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:41,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:42:41,306 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:41,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2059945390, now seen corresponding path program 1 times [2024-12-02 07:42:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:41,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138999] [2024-12-02 07:42:41,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-12-02 07:42:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138999] [2024-12-02 07:42:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138999] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:42:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206553675] [2024-12-02 07:42:41,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:41,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:41,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:42:41,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:42:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:42:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:42,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:42:42,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:42:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-12-02 07:42:42,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:42:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1745 trivial. 0 not checked. [2024-12-02 07:42:42,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206553675] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:42:42,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:42:42,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-12-02 07:42:42,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765960475] [2024-12-02 07:42:42,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:42:42,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:42:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:42,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:42:42,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:42:42,881 INFO L87 Difference]: Start difference. First operand 232 states and 337 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-12-02 07:42:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:42,962 INFO L93 Difference]: Finished difference Result 471 states and 683 transitions. [2024-12-02 07:42:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:42:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 268 [2024-12-02 07:42:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:42,965 INFO L225 Difference]: With dead ends: 471 [2024-12-02 07:42:42,965 INFO L226 Difference]: Without dead ends: 252 [2024-12-02 07:42:42,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:42:42,967 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 5 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:42,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 802 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:42:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-12-02 07:42:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-12-02 07:42:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 170 states have internal predecessors, (219), 67 states have call successors, (67), 14 states have call predecessors, (67), 14 states have return successors, (73), 67 states have call predecessors, (73), 67 states have call successors, (73) [2024-12-02 07:42:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 359 transitions. [2024-12-02 07:42:42,986 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 359 transitions. Word has length 268 [2024-12-02 07:42:42,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:42,986 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 359 transitions. [2024-12-02 07:42:42,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2024-12-02 07:42:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 359 transitions. [2024-12-02 07:42:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 07:42:42,991 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:42,991 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:43,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:42:43,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:42:43,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:43,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -868753318, now seen corresponding path program 2 times [2024-12-02 07:42:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538412816] [2024-12-02 07:42:43,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:42:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:43,384 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:42:43,384 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:42:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2024-12-02 07:42:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538412816] [2024-12-02 07:42:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538412816] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:43,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:42:43,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:42:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121751409] [2024-12-02 07:42:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:43,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:42:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:43,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:42:43,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:42:43,621 INFO L87 Difference]: Start difference. First operand 252 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-12-02 07:42:47,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:42:51,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:42:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:42:51,793 INFO L93 Difference]: Finished difference Result 662 states and 965 transitions. [2024-12-02 07:42:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:42:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 288 [2024-12-02 07:42:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:42:51,798 INFO L225 Difference]: With dead ends: 662 [2024-12-02 07:42:51,798 INFO L226 Difference]: Without dead ends: 460 [2024-12-02 07:42:51,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:42:51,800 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 186 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:42:51,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 842 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-12-02 07:42:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-12-02 07:42:51,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2024-12-02 07:42:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 296 states have (on average 1.3006756756756757) internal successors, (385), 296 states have internal predecessors, (385), 131 states have call successors, (131), 28 states have call predecessors, (131), 28 states have return successors, (150), 131 states have call predecessors, (150), 131 states have call successors, (150) [2024-12-02 07:42:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 666 transitions. [2024-12-02 07:42:51,841 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 666 transitions. Word has length 288 [2024-12-02 07:42:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:42:51,841 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 666 transitions. [2024-12-02 07:42:51,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-12-02 07:42:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 666 transitions. [2024-12-02 07:42:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 07:42:51,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:42:51,849 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:51,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:42:51,849 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:42:51,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:42:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 68601850, now seen corresponding path program 1 times [2024-12-02 07:42:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:42:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901491667] [2024-12-02 07:42:51,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:42:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:42:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:42:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2024-12-02 07:42:52,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:42:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901491667] [2024-12-02 07:42:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901491667] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:42:52,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:42:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:42:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956538330] [2024-12-02 07:42:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:42:52,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:42:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:42:52,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:42:52,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:42:52,940 INFO L87 Difference]: Start difference. First operand 456 states and 666 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-12-02 07:42:56,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:43:00,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:43:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:01,093 INFO L93 Difference]: Finished difference Result 827 states and 1202 transitions. [2024-12-02 07:43:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:43:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 288 [2024-12-02 07:43:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:01,096 INFO L225 Difference]: With dead ends: 827 [2024-12-02 07:43:01,096 INFO L226 Difference]: Without dead ends: 415 [2024-12-02 07:43:01,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:43:01,098 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 182 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:01,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 847 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-12-02 07:43:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-12-02 07:43:01,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2024-12-02 07:43:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 268 states have (on average 1.25) internal successors, (335), 268 states have internal predecessors, (335), 117 states have call successors, (117), 25 states have call predecessors, (117), 25 states have return successors, (129), 117 states have call predecessors, (129), 117 states have call successors, (129) [2024-12-02 07:43:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 581 transitions. [2024-12-02 07:43:01,123 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 581 transitions. Word has length 288 [2024-12-02 07:43:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:01,123 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 581 transitions. [2024-12-02 07:43:01,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-12-02 07:43:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 581 transitions. [2024-12-02 07:43:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 07:43:01,126 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:01,126 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:01,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:43:01,127 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:01,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash -228288614, now seen corresponding path program 1 times [2024-12-02 07:43:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:01,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173175086] [2024-12-02 07:43:01,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2024-12-02 07:43:01,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173175086] [2024-12-02 07:43:01,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173175086] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:43:01,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897991807] [2024-12-02 07:43:01,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:01,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:01,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:01,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:43:01,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:43:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:02,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 07:43:02,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:43:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 616 proven. 4 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2024-12-02 07:43:02,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:43:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2024-12-02 07:43:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897991807] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:43:03,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:43:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-12-02 07:43:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892475078] [2024-12-02 07:43:03,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:43:03,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:43:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:03,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:43:03,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:43:03,507 INFO L87 Difference]: Start difference. First operand 411 states and 581 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2024-12-02 07:43:07,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:43:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:43:08,507 INFO L93 Difference]: Finished difference Result 804 states and 1161 transitions. [2024-12-02 07:43:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:43:08,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) Word has length 288 [2024-12-02 07:43:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:43:08,512 INFO L225 Difference]: With dead ends: 804 [2024-12-02 07:43:08,512 INFO L226 Difference]: Without dead ends: 448 [2024-12-02 07:43:08,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:43:08,515 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 384 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 263 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:43:08,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 684 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 07:43:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-12-02 07:43:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 445. [2024-12-02 07:43:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 295 states have (on average 1.2779661016949153) internal successors, (377), 297 states have internal predecessors, (377), 113 states have call successors, (113), 34 states have call predecessors, (113), 36 states have return successors, (137), 113 states have call predecessors, (137), 113 states have call successors, (137) [2024-12-02 07:43:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 627 transitions. [2024-12-02 07:43:08,565 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 627 transitions. Word has length 288 [2024-12-02 07:43:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:43:08,565 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 627 transitions. [2024-12-02 07:43:08,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 9 states have call successors, (72), 5 states have call predecessors, (72), 6 states have return successors, (73), 7 states have call predecessors, (73), 9 states have call successors, (73) [2024-12-02 07:43:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 627 transitions. [2024-12-02 07:43:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 07:43:08,569 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:43:08,570 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:43:08,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 07:43:08,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:08,770 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:43:08,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:43:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -965693062, now seen corresponding path program 1 times [2024-12-02 07:43:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:43:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115095051] [2024-12-02 07:43:08,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:43:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2024-12-02 07:43:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:43:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115095051] [2024-12-02 07:43:11,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115095051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:43:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304909002] [2024-12-02 07:43:11,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:43:11,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:43:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:43:11,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:43:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:43:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:43:12,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 07:43:12,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:43:12,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 07:43:13,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:43:13,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:43:13,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2024-12-02 07:43:13,138 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-12-02 07:43:13,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-12-02 07:43:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 742 proven. 4 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-12-02 07:43:55,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:43:55,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-12-02 07:43:55,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-12-02 07:43:56,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 07:43:56,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 07:43:56,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 07:43:56,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 07:43:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2024-12-02 07:43:56,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304909002] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:43:56,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:43:56,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 9] total 37 [2024-12-02 07:43:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787489424] [2024-12-02 07:43:56,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:43:56,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 07:43:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:43:56,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 07:43:56,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1192, Unknown=2, NotChecked=0, Total=1332 [2024-12-02 07:43:56,936 INFO L87 Difference]: Start difference. First operand 445 states and 627 transitions. Second operand has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 18 states have call successors, (87), 12 states have call predecessors, (87), 14 states have return successors, (87), 16 states have call predecessors, (87), 18 states have call successors, (87) [2024-12-02 07:44:00,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:04,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:09,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:13,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:17,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:18,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:21,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:25,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:29,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:33,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:35,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:39,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:43,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:47,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:51,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:55,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:44:59,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:04,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:08,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:11,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:13,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:17,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:21,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:31,262 INFO L93 Difference]: Finished difference Result 896 states and 1326 transitions. [2024-12-02 07:45:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:45:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 18 states have call successors, (87), 12 states have call predecessors, (87), 14 states have return successors, (87), 16 states have call predecessors, (87), 18 states have call successors, (87) Word has length 288 [2024-12-02 07:45:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:31,267 INFO L225 Difference]: With dead ends: 896 [2024-12-02 07:45:31,268 INFO L226 Difference]: Without dead ends: 540 [2024-12-02 07:45:31,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 554 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=654, Invalid=3504, Unknown=2, NotChecked=0, Total=4160 [2024-12-02 07:45:31,271 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1106 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 1145 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 4993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:31,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 2378 Invalid, 4993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1145 Valid, 3830 Invalid, 18 Unknown, 0 Unchecked, 91.7s Time] [2024-12-02 07:45:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-12-02 07:45:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 495. [2024-12-02 07:45:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 322 states have (on average 1.2763975155279503) internal successors, (411), 327 states have internal predecessors, (411), 131 states have call successors, (131), 34 states have call predecessors, (131), 41 states have return successors, (181), 133 states have call predecessors, (181), 131 states have call successors, (181) [2024-12-02 07:45:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 723 transitions. [2024-12-02 07:45:31,332 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 723 transitions. Word has length 288 [2024-12-02 07:45:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:31,333 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 723 transitions. [2024-12-02 07:45:31,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 18 states have call successors, (87), 12 states have call predecessors, (87), 14 states have return successors, (87), 16 states have call predecessors, (87), 18 states have call successors, (87) [2024-12-02 07:45:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 723 transitions. [2024-12-02 07:45:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-12-02 07:45:31,338 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:31,338 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 9, 9, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:31,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 07:45:31,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 07:45:31,538 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:31,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1487121120, now seen corresponding path program 1 times [2024-12-02 07:45:31,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:31,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935595775] [2024-12-02 07:45:31,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2004 trivial. 0 not checked. [2024-12-02 07:45:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935595775] [2024-12-02 07:45:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935595775] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313031011] [2024-12-02 07:45:31,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:31,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:45:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:32,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:45:32,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-12-02 07:45:32,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:45:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313031011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:32,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:45:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-12-02 07:45:32,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578596221] [2024-12-02 07:45:32,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:32,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:45:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:32,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:45:32,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:45:32,756 INFO L87 Difference]: Start difference. First operand 495 states and 723 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:45:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:32,808 INFO L93 Difference]: Finished difference Result 876 states and 1351 transitions. [2024-12-02 07:45:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:45:32,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 309 [2024-12-02 07:45:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:32,812 INFO L225 Difference]: With dead ends: 876 [2024-12-02 07:45:32,812 INFO L226 Difference]: Without dead ends: 499 [2024-12-02 07:45:32,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 310 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 07:45:32,815 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 402 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 07:45:32,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 402 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:45:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-12-02 07:45:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2024-12-02 07:45:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 326 states have (on average 1.2730061349693251) internal successors, (415), 331 states have internal predecessors, (415), 131 states have call successors, (131), 34 states have call predecessors, (131), 41 states have return successors, (181), 133 states have call predecessors, (181), 131 states have call successors, (181) [2024-12-02 07:45:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 727 transitions. [2024-12-02 07:45:32,876 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 727 transitions. Word has length 309 [2024-12-02 07:45:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:32,876 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 727 transitions. [2024-12-02 07:45:32,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:45:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 727 transitions. [2024-12-02 07:45:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-12-02 07:45:32,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:32,880 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 9, 9, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:32,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:45:33,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 07:45:33,081 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:33,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 671073890, now seen corresponding path program 1 times [2024-12-02 07:45:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68012460] [2024-12-02 07:45:33,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1966 trivial. 0 not checked. [2024-12-02 07:45:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68012460] [2024-12-02 07:45:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68012460] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:45:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:45:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:45:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29080127] [2024-12-02 07:45:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:45:35,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:45:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:35,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:45:35,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:45:35,735 INFO L87 Difference]: Start difference. First operand 499 states and 727 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) [2024-12-02 07:45:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:45:37,140 INFO L93 Difference]: Finished difference Result 1366 states and 2001 transitions. [2024-12-02 07:45:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:45:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) Word has length 309 [2024-12-02 07:45:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:45:37,148 INFO L225 Difference]: With dead ends: 1366 [2024-12-02 07:45:37,148 INFO L226 Difference]: Without dead ends: 898 [2024-12-02 07:45:37,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:45:37,152 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 469 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:45:37,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 428 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 07:45:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-12-02 07:45:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 697. [2024-12-02 07:45:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 454 states have (on average 1.196035242290749) internal successors, (543), 456 states have internal predecessors, (543), 175 states have call successors, (175), 48 states have call predecessors, (175), 67 states have return successors, (269), 192 states have call predecessors, (269), 175 states have call successors, (269) [2024-12-02 07:45:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 987 transitions. [2024-12-02 07:45:37,277 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 987 transitions. Word has length 309 [2024-12-02 07:45:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:45:37,278 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 987 transitions. [2024-12-02 07:45:37,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 6 states have call predecessors, (39), 6 states have call successors, (39) [2024-12-02 07:45:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 987 transitions. [2024-12-02 07:45:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-12-02 07:45:37,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:45:37,283 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 9, 9, 8, 8, 8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:45:37,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:45:37,283 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:45:37,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:45:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1464809312, now seen corresponding path program 1 times [2024-12-02 07:45:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:45:37,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655224051] [2024-12-02 07:45:37,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:45:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2024-12-02 07:45:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:45:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655224051] [2024-12-02 07:45:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655224051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:45:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925320421] [2024-12-02 07:45:39,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:45:39,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:45:39,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:45:39,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:45:39,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:45:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:45:44,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 07:45:44,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:45:44,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-12-02 07:45:45,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 07:45:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 796 proven. 69 refuted. 0 times theorem prover too weak. 1142 trivial. 0 not checked. [2024-12-02 07:45:45,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:45:45,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 07:45:45,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 07:45:46,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 07:45:46,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 07:45:46,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-12-02 07:45:46,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 07:45:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1997 trivial. 0 not checked. [2024-12-02 07:45:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925320421] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:45:46,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:45:46,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 32 [2024-12-02 07:45:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131972201] [2024-12-02 07:45:46,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:45:46,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:45:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:45:46,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:45:46,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:45:46,833 INFO L87 Difference]: Start difference. First operand 697 states and 987 transitions. Second operand has 32 states, 30 states have (on average 6.066666666666666) internal successors, (182), 32 states have internal predecessors, (182), 22 states have call successors, (91), 11 states have call predecessors, (91), 16 states have return successors, (91), 19 states have call predecessors, (91), 22 states have call successors, (91) [2024-12-02 07:45:50,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:54,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:45:58,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:02,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:08,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:12,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:16,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:20,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:24,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:28,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:32,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:36,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:40,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:44,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:54,612 INFO L93 Difference]: Finished difference Result 2289 states and 3251 transitions. [2024-12-02 07:46:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 07:46:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 6.066666666666666) internal successors, (182), 32 states have internal predecessors, (182), 22 states have call successors, (91), 11 states have call predecessors, (91), 16 states have return successors, (91), 19 states have call predecessors, (91), 22 states have call successors, (91) Word has length 309 [2024-12-02 07:46:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:54,622 INFO L225 Difference]: With dead ends: 2289 [2024-12-02 07:46:54,622 INFO L226 Difference]: Without dead ends: 1648 [2024-12-02 07:46:54,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=623, Invalid=3159, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 07:46:54,627 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 1973 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 2148 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 6269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2148 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:54,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2548 Invalid, 6269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2148 Valid, 4107 Invalid, 14 Unknown, 0 Unchecked, 65.5s Time] [2024-12-02 07:46:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2024-12-02 07:46:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1438. [2024-12-02 07:46:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 903 states have (on average 1.1661129568106312) internal successors, (1053), 909 states have internal predecessors, (1053), 405 states have call successors, (405), 100 states have call predecessors, (405), 129 states have return successors, (533), 428 states have call predecessors, (533), 405 states have call successors, (533) [2024-12-02 07:46:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1991 transitions. [2024-12-02 07:46:54,974 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1991 transitions. Word has length 309 [2024-12-02 07:46:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:54,975 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 1991 transitions. [2024-12-02 07:46:54,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 6.066666666666666) internal successors, (182), 32 states have internal predecessors, (182), 22 states have call successors, (91), 11 states have call predecessors, (91), 16 states have return successors, (91), 19 states have call predecessors, (91), 22 states have call successors, (91) [2024-12-02 07:46:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1991 transitions. [2024-12-02 07:46:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-12-02 07:46:54,982 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:54,983 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:46:55,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 07:46:55,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 07:46:55,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:55,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1658824029, now seen corresponding path program 1 times [2024-12-02 07:46:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466024384] [2024-12-02 07:46:55,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:55,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2179 backedges. 172 proven. 568 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2024-12-02 07:47:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466024384] [2024-12-02 07:47:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466024384] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:47:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243884220] [2024-12-02 07:47:21,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:21,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:21,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:47:21,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:47:21,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bd05f35-c28f-48a9-80a3-6f4ba1a143dd/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:47:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:56,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 260 conjuncts are in the unsatisfiable core [2024-12-02 07:47:56,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:47:56,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 07:47:59,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 07:47:59,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 07:48:00,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-02 07:48:00,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 77 [2024-12-02 07:48:01,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:48:01,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 07:48:01,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:48:01,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 46 [2024-12-02 07:48:01,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 07:48:05,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 07:48:06,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-12-02 07:48:06,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 07:48:10,545 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 07:48:10,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 34 [2024-12-02 07:48:10,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-12-02 07:48:10,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2024-12-02 07:48:11,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 07:48:11,754 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-12-02 07:48:11,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 132 treesize of output 120 [2024-12-02 07:48:11,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-12-02 07:48:13,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 62 [2024-12-02 07:48:13,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:13,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:13,210 INFO L349 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2024-12-02 07:48:13,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 70 [2024-12-02 07:48:13,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:13,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2024-12-02 07:48:22,138 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 07:48:22,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 125 [2024-12-02 07:48:30,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2024-12-02 07:48:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:30,887 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2024-12-02 07:48:30,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 66 [2024-12-02 07:48:30,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:30,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-12-02 07:48:40,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2024-12-02 07:48:41,060 INFO L349 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2024-12-02 07:48:41,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 66 [2024-12-02 07:48:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:48:41,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2024-12-02 07:49:06,392 WARN L286 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 204 DAG size of output: 202 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 07:49:22,946 WARN L286 SmtUtils]: Spent 7.89s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 07:49:24,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:49:24,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-12-02 07:49:24,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 99 [2024-12-02 07:49:24,765 INFO L349 Elim1Store]: treesize reduction 96, result has 48.7 percent of original size [2024-12-02 07:49:24,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 188 [2024-12-02 07:49:33,342 INFO L349 Elim1Store]: treesize reduction 1696, result has 1.3 percent of original size [2024-12-02 07:49:33,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 25 select indices, 25 select index equivalence classes, 41 disjoint index pairs (out of 300 index pairs), introduced 25 new quantified variables, introduced 302 case distinctions, treesize of input 654 treesize of output 713 [2024-12-02 07:55:05,479 WARN L286 SmtUtils]: Spent 5.31m on a formula simplification. DAG size of input: 3783 DAG size of output: 3771 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 07:55:05,480 INFO L349 Elim1Store]: treesize reduction 24, result has 99.7 percent of original size [2024-12-02 07:55:05,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 52 select indices, 52 select index equivalence classes, 33 disjoint index pairs (out of 1326 index pairs), introduced 52 new quantified variables, introduced 1326 case distinctions, treesize of input 1597 treesize of output 9459 [2024-12-02 07:55:18,269 WARN L286 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 07:55:18,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:55:18,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1180 treesize of output 1276