./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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 fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:05:42,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:05:42,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:05:42,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:05:42,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:05:42,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:05:42,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:05:42,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:05:42,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:05:42,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:05:42,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:05:42,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:05:42,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:05:42,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:05:42,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:05:42,169 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:42,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:42,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:42,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:05:42,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:05:42,171 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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 -> fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 [2024-12-02 07:05:42,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:05:42,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:05:42,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:05:42,411 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:05:42,411 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:05:42,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-12-02 07:05:45,033 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/be79cf9ea/23d28ad69d5f4459b7bda55b04cb9772/FLAGc7f62c6d4 [2024-12-02 07:05:45,256 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:05:45,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-12-02 07:05:45,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/be79cf9ea/23d28ad69d5f4459b7bda55b04cb9772/FLAGc7f62c6d4 [2024-12-02 07:05:45,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/be79cf9ea/23d28ad69d5f4459b7bda55b04cb9772 [2024-12-02 07:05:45,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:05:45,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:05:45,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:45,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:05:45,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:05:45,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7cc7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45, skipping insertion in model container [2024-12-02 07:05:45,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:05:45,558 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2024-12-02 07:05:45,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:45,570 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:05:45,610 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2024-12-02 07:05:45,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:45,635 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:05:45,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45 WrapperNode [2024-12-02 07:05:45,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:45,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:45,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:05:45,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:05:45,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,670 INFO L138 Inliner]: procedures = 129, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 174 [2024-12-02 07:05:45,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:45,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:05:45,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:05:45,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:05:45,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,701 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-12-02 07:05:45,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:05:45,718 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:05:45,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:05:45,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:05:45,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (1/1) ... [2024-12-02 07:05:45,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:45,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:05:45,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-02 07:05:45,769 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 07:05:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:05:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:05:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:05:45,878 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:05:45,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:05:45,899 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-02 07:05:46,093 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-12-02 07:05:46,093 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:05:46,102 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:05:46,103 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-12-02 07:05:46,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:46 BoogieIcfgContainer [2024-12-02 07:05:46,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:05:46,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:05:46,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:05:46,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:05:46,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:05:45" (1/3) ... [2024-12-02 07:05:46,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f176c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:46, skipping insertion in model container [2024-12-02 07:05:46,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:45" (2/3) ... [2024-12-02 07:05:46,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f176c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:46, skipping insertion in model container [2024-12-02 07:05:46,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:46" (3/3) ... [2024-12-02 07:05:46,110 INFO L128 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2024-12-02 07:05:46,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:05:46,121 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_of_sll_nondet_append-1.i that has 2 procedures, 55 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-12-02 07:05:46,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:05:46,169 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;@15e72666, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:05:46,169 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:05:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 50 states have (on average 1.54) internal successors, (77), 52 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:05:46,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:46,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:46,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:46,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:46,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2117520714, now seen corresponding path program 1 times [2024-12-02 07:05:46,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:46,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942497275] [2024-12-02 07:05:46,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942497275] [2024-12-02 07:05:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942497275] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:05:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427045991] [2024-12-02 07:05:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:46,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:05:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:46,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:05:46,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:05:46,305 INFO L87 Difference]: Start difference. First operand has 54 states, 50 states have (on average 1.54) internal successors, (77), 52 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:46,323 INFO L93 Difference]: Finished difference Result 106 states and 156 transitions. [2024-12-02 07:05:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:05:46,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 07:05:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:46,330 INFO L225 Difference]: With dead ends: 106 [2024-12-02 07:05:46,331 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 07:05:46,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:05:46,336 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:46,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 07:05:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-12-02 07:05:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-12-02 07:05:46,362 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 7 [2024-12-02 07:05:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:46,363 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-12-02 07:05:46,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-12-02 07:05:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:05:46,363 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:46,363 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:46,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:05:46,364 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:46,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2102641381, now seen corresponding path program 1 times [2024-12-02 07:05:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477693921] [2024-12-02 07:05:46,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:46,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:46,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477693921] [2024-12-02 07:05:46,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477693921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:46,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:46,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:05:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937125757] [2024-12-02 07:05:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:46,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:05:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:46,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:05:46,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:05:46,498 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:46,553 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2024-12-02 07:05:46,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:46,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 07:05:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:46,554 INFO L225 Difference]: With dead ends: 81 [2024-12-02 07:05:46,554 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 07:05:46,554 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 07:05:46,555 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:46,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 07:05:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-12-02 07:05:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-12-02 07:05:46,562 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 7 [2024-12-02 07:05:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:46,562 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-12-02 07:05:46,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-12-02 07:05:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 07:05:46,563 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:46,563 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:46,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:05:46,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:46,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2107476187, now seen corresponding path program 1 times [2024-12-02 07:05:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:46,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216513891] [2024-12-02 07:05:46,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:46,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:05:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:46,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216513891] [2024-12-02 07:05:46,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216513891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:46,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:46,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:05:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156391557] [2024-12-02 07:05:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:46,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:05:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:46,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:05:46,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:05:46,720 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:46,797 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2024-12-02 07:05:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-02 07:05:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:46,799 INFO L225 Difference]: With dead ends: 119 [2024-12-02 07:05:46,799 INFO L226 Difference]: Without dead ends: 117 [2024-12-02 07:05:46,799 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 07:05:46,800 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:46,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-12-02 07:05:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 64. [2024-12-02 07:05:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2024-12-02 07:05:46,810 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 25 [2024-12-02 07:05:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:46,810 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2024-12-02 07:05:46,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2024-12-02 07:05:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 07:05:46,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:46,811 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:05:46,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:05:46,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:46,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash 76437583, now seen corresponding path program 1 times [2024-12-02 07:05:46,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:46,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043475214] [2024-12-02 07:05:46,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:46,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043475214] [2024-12-02 07:05:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043475214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:46,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:46,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:05:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358243016] [2024-12-02 07:05:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:46,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:46,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:46,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:46,977 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:47,059 INFO L93 Difference]: Finished difference Result 147 states and 184 transitions. [2024-12-02 07:05:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-12-02 07:05:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:47,060 INFO L225 Difference]: With dead ends: 147 [2024-12-02 07:05:47,061 INFO L226 Difference]: Without dead ends: 85 [2024-12-02 07:05:47,061 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 07:05:47,062 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:47,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 117 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-02 07:05:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2024-12-02 07:05:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 65 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-12-02 07:05:47,072 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 33 [2024-12-02 07:05:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:47,072 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-12-02 07:05:47,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-12-02 07:05:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 07:05:47,073 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:47,073 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:05:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:05:47,073 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:47,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2070264503, now seen corresponding path program 1 times [2024-12-02 07:05:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328519469] [2024-12-02 07:05:47,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:47,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:05:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328519469] [2024-12-02 07:05:47,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328519469] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:47,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019439108] [2024-12-02 07:05:47,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:47,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:47,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:47,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:05:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:47,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:05:47,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:47,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:47,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019439108] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:47,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:05:47,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-12-02 07:05:47,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292543717] [2024-12-02 07:05:47,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:47,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:05:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:47,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:05:47,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:05:47,476 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:47,780 INFO L93 Difference]: Finished difference Result 282 states and 350 transitions. [2024-12-02 07:05:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:05:47,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-02 07:05:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:47,782 INFO L225 Difference]: With dead ends: 282 [2024-12-02 07:05:47,782 INFO L226 Difference]: Without dead ends: 218 [2024-12-02 07:05:47,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:05:47,783 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 259 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:47,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 381 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-12-02 07:05:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 142. [2024-12-02 07:05:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 141 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2024-12-02 07:05:47,803 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 37 [2024-12-02 07:05:47,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:47,803 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2024-12-02 07:05:47,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2024-12-02 07:05:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 07:05:47,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:47,805 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:05:47,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:05:48,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:48,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:48,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -25431144, now seen corresponding path program 2 times [2024-12-02 07:05:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940684868] [2024-12-02 07:05:48,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:05:48,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:48,044 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:05:48,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:05:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:05:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940684868] [2024-12-02 07:05:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940684868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091862196] [2024-12-02 07:05:48,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:05:48,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:48,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:48,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:48,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:05:48,308 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:05:48,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:05:48,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:05:48,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:48,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:48,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091862196] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:48,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:05:48,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 12 [2024-12-02 07:05:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150804776] [2024-12-02 07:05:48,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:48,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:05:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:48,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:05:48,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:05:48,519 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:48,814 INFO L93 Difference]: Finished difference Result 318 states and 379 transitions. [2024-12-02 07:05:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 07:05:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-12-02 07:05:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:48,816 INFO L225 Difference]: With dead ends: 318 [2024-12-02 07:05:48,816 INFO L226 Difference]: Without dead ends: 238 [2024-12-02 07:05:48,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:05:48,817 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 277 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:48,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 304 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-12-02 07:05:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2024-12-02 07:05:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.167381974248927) internal successors, (272), 233 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 272 transitions. [2024-12-02 07:05:48,841 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 272 transitions. Word has length 51 [2024-12-02 07:05:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:48,841 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 272 transitions. [2024-12-02 07:05:48,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 272 transitions. [2024-12-02 07:05:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:05:48,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:48,843 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:48,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:05:49,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:49,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 629537843, now seen corresponding path program 3 times [2024-12-02 07:05:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546334956] [2024-12-02 07:05:49,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:05:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:49,086 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 07:05:49,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:05:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 07:05:49,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:49,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546334956] [2024-12-02 07:05:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546334956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:49,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:49,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:05:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242770510] [2024-12-02 07:05:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:49,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:05:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:49,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:05:49,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:05:49,888 INFO L87 Difference]: Start difference. First operand 234 states and 272 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:50,124 INFO L93 Difference]: Finished difference Result 371 states and 439 transitions. [2024-12-02 07:05:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:05:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 07:05:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:50,126 INFO L225 Difference]: With dead ends: 371 [2024-12-02 07:05:50,127 INFO L226 Difference]: Without dead ends: 340 [2024-12-02 07:05:50,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:05:50,128 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:50,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 338 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-12-02 07:05:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 284. [2024-12-02 07:05:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.1908127208480566) internal successors, (337), 283 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 337 transitions. [2024-12-02 07:05:50,151 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 337 transitions. Word has length 57 [2024-12-02 07:05:50,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:50,151 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 337 transitions. [2024-12-02 07:05:50,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:05:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 337 transitions. [2024-12-02 07:05:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:05:50,153 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:50,153 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:50,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:05:50,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:50,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1614042927, now seen corresponding path program 1 times [2024-12-02 07:05:50,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:50,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411169239] [2024-12-02 07:05:50,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:05:51,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411169239] [2024-12-02 07:05:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411169239] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965667888] [2024-12-02 07:05:51,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:51,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:51,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:51,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:51,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:05:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:51,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-12-02 07:05:51,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:51,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-12-02 07:05:51,715 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-12-02 07:05:51,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-12-02 07:05:51,805 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-12-02 07:05:51,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2024-12-02 07:05:51,951 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:05:51,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-12-02 07:05:52,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:05:52,198 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 18 treesize of output 7 [2024-12-02 07:05:52,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 43 treesize of output 27 [2024-12-02 07:05:52,298 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 07:05:52,318 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-12-02 07:05:52,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 36 [2024-12-02 07:05:52,419 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-12-02 07:05:52,419 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 23 treesize of output 15 [2024-12-02 07:05:52,432 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 07:05:52,433 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 19 treesize of output 18 [2024-12-02 07:05:53,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:05:53,423 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 163 treesize of output 115 [2024-12-02 07:05:53,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:05:53,436 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 111 treesize of output 111 [2024-12-02 07:05:53,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 07:05:53,723 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:05:53,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 22 [2024-12-02 07:05:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:05:53,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:54,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 1046 treesize of output 986 [2024-12-02 07:05:54,455 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 1046 treesize of output 986 [2024-12-02 07:06:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:01,678 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:01,682 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 154 treesize of output 150 [2024-12-02 07:06:01,768 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:01,769 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:01,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:01,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 3201 treesize of output 2432 [2024-12-02 07:06:03,505 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:03,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:03,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 3201 treesize of output 2432 [2024-12-02 07:06:05,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:05,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:05,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:05,304 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 154 treesize of output 150 [2024-12-02 07:06:05,351 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:05,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:05,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 3201 treesize of output 2432 [2024-12-02 07:06:06,921 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:06,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:06,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 3201 treesize of output 2432 [2024-12-02 07:06:08,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:08,668 INFO L349 Elim1Store]: treesize reduction 74, result has 62.4 percent of original size [2024-12-02 07:06:08,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 45257 treesize of output 41768 [2024-12-02 07:06:09,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:09,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:09,367 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:09,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:09,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1711 treesize of output 1340 [2024-12-02 07:06:10,202 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:10,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:10,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1711 treesize of output 1340 [2024-12-02 07:06:11,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:11,269 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:11,368 INFO L349 Elim1Store]: treesize reduction 82, result has 48.8 percent of original size [2024-12-02 07:06:11,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 45257 treesize of output 41723 [2024-12-02 07:06:11,812 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:11,813 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:11,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:11,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1711 treesize of output 1340 [2024-12-02 07:06:12,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:12,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:06:12,963 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 07:06:12,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:12,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1711 treesize of output 1340 [2024-12-02 07:06:25,673 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:06:25,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 120 [2024-12-02 07:06:25,707 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:06:25,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 48 treesize of output 48 [2024-12-02 07:06:25,742 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:06:25,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 120 [2024-12-02 07:06:25,770 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 07:06:25,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 48 treesize of output 48 [2024-12-02 07:06:25,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:25,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 178 [2024-12-02 07:06:26,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:06:26,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 178 [2024-12-02 07:06:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:06:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965667888] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:06:26,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:06:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 40 [2024-12-02 07:06:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330914218] [2024-12-02 07:06:26,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:06:26,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 07:06:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:26,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 07:06:26,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1434, Unknown=1, NotChecked=0, Total=1560 [2024-12-02 07:06:26,983 INFO L87 Difference]: Start difference. First operand 284 states and 337 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:29,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 07:06:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:34,262 INFO L93 Difference]: Finished difference Result 523 states and 627 transitions. [2024-12-02 07:06:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 07:06:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 07:06:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:34,265 INFO L225 Difference]: With dead ends: 523 [2024-12-02 07:06:34,265 INFO L226 Difference]: Without dead ends: 463 [2024-12-02 07:06:34,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=455, Invalid=4236, Unknown=1, NotChecked=0, Total=4692 [2024-12-02 07:06:34,267 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 209 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:34,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1032 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 07:06:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-12-02 07:06:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 377. [2024-12-02 07:06:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.2101063829787233) internal successors, (455), 376 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 455 transitions. [2024-12-02 07:06:34,314 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 455 transitions. Word has length 59 [2024-12-02 07:06:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:34,314 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 455 transitions. [2024-12-02 07:06:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:06:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 455 transitions. [2024-12-02 07:06:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 07:06:34,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:34,316 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:06:34,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:06:34,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:34,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:34,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1464343765, now seen corresponding path program 2 times [2024-12-02 07:06:34,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708628681] [2024-12-02 07:06:34,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:06:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:34,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:06:34,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:06:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:06:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708628681] [2024-12-02 07:06:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708628681] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:06:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872958570] [2024-12-02 07:06:36,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:06:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:36,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:06:36,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:06:36,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:06:36,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-12-02 07:06:36,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:36,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-12-02 07:06:36,867 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-12-02 07:06:36,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2024-12-02 07:06:37,042 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-12-02 07:06:37,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2024-12-02 07:06:37,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:06:37,328 INFO L349 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2024-12-02 07:06:37,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 29 [2024-12-02 07:06:37,458 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 11 treesize of output 7 [2024-12-02 07:06:37,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2024-12-02 07:06:37,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 22 [2024-12-02 07:06:37,735 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2024-12-02 07:06:37,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 49 [2024-12-02 07:06:37,878 INFO L349 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2024-12-02 07:06:37,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 61 [2024-12-02 07:06:37,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2024-12-02 07:06:38,013 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 07:06:38,017 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 07:06:38,714 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 152 treesize of output 104 [2024-12-02 07:06:39,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-12-02 07:06:39,395 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-12-02 07:06:39,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 41 [2024-12-02 07:06:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:06:39,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:06:39,983 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 436 treesize of output 404 [2024-12-02 07:06:39,987 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 540 treesize of output 476 [2024-12-02 07:07:21,162 WARN L286 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 646 DAG size of output: 466 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 07:07:21,163 INFO L349 Elim1Store]: treesize reduction 4860, result has 50.8 percent of original size [2024-12-02 07:07:21,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 23 new quantified variables, introduced 171 case distinctions, treesize of input 156977 treesize of output 152499 [2024-12-02 07:07:31,801 WARN L286 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 1780 DAG size of output: 1728 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 07:09:03,475 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 1318 DAG size of output: 1440 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 07:10:37,537 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 07:10:37,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 07:10:37,538 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-02 07:10:37,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:10:37,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:37,739 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-12-02 07:10:37,745 INFO L158 Benchmark]: Toolchain (without parser) took 292459.24ms. Allocated memory was 142.6MB in the beginning and 939.5MB in the end (delta: 796.9MB). Free memory was 115.2MB in the beginning and 375.0MB in the end (delta: -259.8MB). Peak memory consumption was 592.5MB. Max. memory is 16.1GB. [2024-12-02 07:10:37,745 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 83.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:10:37,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.17ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 96.8MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:10:37,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.89ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 94.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:10:37,746 INFO L158 Benchmark]: Boogie Preprocessor took 47.29ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 91.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:10:37,746 INFO L158 Benchmark]: RCFGBuilder took 384.81ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 72.5MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:10:37,746 INFO L158 Benchmark]: TraceAbstraction took 291639.35ms. Allocated memory was 142.6MB in the beginning and 939.5MB in the end (delta: 796.9MB). Free memory was 72.0MB in the beginning and 375.0MB in the end (delta: -303.1MB). Peak memory consumption was 550.6MB. Max. memory is 16.1GB. [2024-12-02 07:10:37,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 83.0MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.17ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 96.8MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.89ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 94.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.29ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 91.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 384.81ms. Allocated memory is still 142.6MB. Free memory was 91.8MB in the beginning and 72.5MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 291639.35ms. Allocated memory was 142.6MB in the beginning and 939.5MB in the end (delta: 796.9MB). Free memory was 72.0MB in the beginning and 375.0MB in the end (delta: -303.1MB). Peak memory consumption was 550.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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 fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:10:39,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:10:39,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 07:10:39,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:10:39,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:10:39,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:10:39,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:10:39,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:10:39,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:10:39,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:10:39,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:10:39,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:10:39,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:10:39,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:10:39,729 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:10:39,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:10:39,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:10:39,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:10:39,730 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:10:39,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:10:39,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:10:39,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:10:39,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:10:39,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:10:39,732 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:10:39,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:10:39,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:10:39,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:10:39,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:10:39,733 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/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 -> fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 [2024-12-02 07:10:39,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:10:39,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:10:39,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:10:39,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:10:39,983 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:10:39,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-12-02 07:10:42,937 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/4b87b238f/4146d34ebbb442f48842933b80f28094/FLAG4c7d26bcc [2024-12-02 07:10:43,175 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:10:43,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-12-02 07:10:43,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/4b87b238f/4146d34ebbb442f48842933b80f28094/FLAG4c7d26bcc [2024-12-02 07:10:43,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/data/4b87b238f/4146d34ebbb442f48842933b80f28094 [2024-12-02 07:10:43,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:10:43,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:10:43,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:10:43,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:10:43,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:10:43,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c79dd60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43, skipping insertion in model container [2024-12-02 07:10:43,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,235 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:10:43,514 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2024-12-02 07:10:43,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:10:43,529 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:10:43,575 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_8973553a-ac7c-44a2-ba06-2cc1150b86f3/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2024-12-02 07:10:43,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:10:43,603 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:10:43,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43 WrapperNode [2024-12-02 07:10:43,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:10:43,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:10:43,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:10:43,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:10:43,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,642 INFO L138 Inliner]: procedures = 130, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 173 [2024-12-02 07:10:43,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:10:43,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:10:43,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:10:43,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:10:43,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,674 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-12-02 07:10:43,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,686 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:10:43,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:10:43,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:10:43,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:10:43,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (1/1) ... [2024-12-02 07:10:43,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:10:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:43,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:10:43,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:10:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-02 07:10:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:10:43,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:10:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:10:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 07:10:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-12-02 07:10:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:10:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:10:43,863 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:10:43,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:10:43,882 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-02 07:10:44,170 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-12-02 07:10:44,170 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:10:44,181 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:10:44,181 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-12-02 07:10:44,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:10:44 BoogieIcfgContainer [2024-12-02 07:10:44,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:10:44,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:10:44,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:10:44,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:10:44,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:10:43" (1/3) ... [2024-12-02 07:10:44,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f67bc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:10:44, skipping insertion in model container [2024-12-02 07:10:44,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:10:43" (2/3) ... [2024-12-02 07:10:44,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f67bc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:10:44, skipping insertion in model container [2024-12-02 07:10:44,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:10:44" (3/3) ... [2024-12-02 07:10:44,192 INFO L128 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2024-12-02 07:10:44,208 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:10:44,209 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_of_sll_nondet_append-1.i that has 2 procedures, 55 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-12-02 07:10:44,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:10:44,273 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;@4f87bbf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:10:44,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:10:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 50 states have (on average 1.54) internal successors, (77), 52 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:10:44,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:44,283 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:44,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:44,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2117520714, now seen corresponding path program 1 times [2024-12-02 07:10:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490388400] [2024-12-02 07:10:44,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:44,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:44,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:44,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:44,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:10:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:44,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:10:44,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:44,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:44,406 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490388400] [2024-12-02 07:10:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490388400] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:44,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:10:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:10:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669886876] [2024-12-02 07:10:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:44,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:10:44,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:44,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:10:44,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:10:44,428 INFO L87 Difference]: Start difference. First operand has 54 states, 50 states have (on average 1.54) internal successors, (77), 52 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:44,445 INFO L93 Difference]: Finished difference Result 106 states and 156 transitions. [2024-12-02 07:10:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:10:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 07:10:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:44,451 INFO L225 Difference]: With dead ends: 106 [2024-12-02 07:10:44,452 INFO L226 Difference]: Without dead ends: 40 [2024-12-02 07:10:44,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:10:44,457 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:44,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:10:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-12-02 07:10:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-12-02 07:10:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-12-02 07:10:44,493 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 7 [2024-12-02 07:10:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:44,494 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-12-02 07:10:44,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-12-02 07:10:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:10:44,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:44,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:44,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:10:44,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:44,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:44,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2102641381, now seen corresponding path program 1 times [2024-12-02 07:10:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198252024] [2024-12-02 07:10:44,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:44,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:44,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:44,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:44,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:10:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:44,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:10:44,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:44,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:44,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198252024] [2024-12-02 07:10:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198252024] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:44,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:10:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:10:44,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60321047] [2024-12-02 07:10:44,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:44,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:10:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:44,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:10:44,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:10:44,879 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:44,980 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2024-12-02 07:10:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:10:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 07:10:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:44,982 INFO L225 Difference]: With dead ends: 81 [2024-12-02 07:10:44,982 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 07:10:44,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 07:10:44,983 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:44,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 07:10:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-12-02 07:10:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-12-02 07:10:44,991 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 7 [2024-12-02 07:10:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:44,991 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-12-02 07:10:44,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-12-02 07:10:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 07:10:44,992 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:44,992 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:45,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:10:45,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:45,192 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:45,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2107476187, now seen corresponding path program 1 times [2024-12-02 07:10:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355966056] [2024-12-02 07:10:45,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:45,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:45,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:45,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:45,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:10:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:45,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:10:45,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:45,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:45,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:45,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355966056] [2024-12-02 07:10:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355966056] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:10:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:10:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906584686] [2024-12-02 07:10:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:45,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:10:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:45,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:10:45,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:10:45,369 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:45,510 INFO L93 Difference]: Finished difference Result 172 states and 214 transitions. [2024-12-02 07:10:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:10:45,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-02 07:10:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:45,511 INFO L225 Difference]: With dead ends: 172 [2024-12-02 07:10:45,511 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 07:10:45,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:10:45,513 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:45,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 164 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 07:10:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2024-12-02 07:10:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2524271844660195) internal successors, (129), 103 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2024-12-02 07:10:45,526 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 25 [2024-12-02 07:10:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:45,526 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2024-12-02 07:10:45,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2024-12-02 07:10:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 07:10:45,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:45,527 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:10:45,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:10:45,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:45,729 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:45,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -763363809, now seen corresponding path program 1 times [2024-12-02 07:10:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866271091] [2024-12-02 07:10:45,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:45,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:45,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:10:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:45,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:10:45,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:10:46,069 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:46,069 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866271091] [2024-12-02 07:10:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866271091] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:46,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:10:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:10:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657531377] [2024-12-02 07:10:46,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:46,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:10:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:46,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:10:46,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:10:46,071 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:46,160 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2024-12-02 07:10:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:10:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-12-02 07:10:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:46,162 INFO L225 Difference]: With dead ends: 121 [2024-12-02 07:10:46,162 INFO L226 Difference]: Without dead ends: 119 [2024-12-02 07:10:46,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 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 07:10:46,163 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 53 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:46,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 85 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-12-02 07:10:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 106. [2024-12-02 07:10:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 105 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 131 transitions. [2024-12-02 07:10:46,178 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 131 transitions. Word has length 29 [2024-12-02 07:10:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:46,179 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 131 transitions. [2024-12-02 07:10:46,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 131 transitions. [2024-12-02 07:10:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 07:10:46,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:46,180 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:10:46,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:10:46,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:46,381 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:46,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2070264503, now seen corresponding path program 1 times [2024-12-02 07:10:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464656562] [2024-12-02 07:10:46,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:46,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:46,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:46,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:10:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:46,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 07:10:46,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:46,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:46,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:46,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464656562] [2024-12-02 07:10:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464656562] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:46,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:46,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-12-02 07:10:46,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98604136] [2024-12-02 07:10:46,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:46,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:10:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:46,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:10:46,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:10:46,757 INFO L87 Difference]: Start difference. First operand 106 states and 131 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:47,237 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2024-12-02 07:10:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 07:10:47,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-02 07:10:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:47,239 INFO L225 Difference]: With dead ends: 281 [2024-12-02 07:10:47,239 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 07:10:47,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:10:47,240 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 73 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:47,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 382 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:10:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 07:10:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2024-12-02 07:10:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.2228571428571429) internal successors, (214), 175 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 214 transitions. [2024-12-02 07:10:47,263 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 214 transitions. Word has length 37 [2024-12-02 07:10:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:47,269 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 214 transitions. [2024-12-02 07:10:47,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 214 transitions. [2024-12-02 07:10:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 07:10:47,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:47,270 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 07:10:47,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:10:47,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:47,471 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:47,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash 628409386, now seen corresponding path program 1 times [2024-12-02 07:10:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:47,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454812508] [2024-12-02 07:10:47,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:47,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:47,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:47,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:47,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:10:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:47,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:10:47,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:47,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:47,714 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:47,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454812508] [2024-12-02 07:10:47,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454812508] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:47,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:47,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-12-02 07:10:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897337246] [2024-12-02 07:10:47,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:47,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:10:47,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:47,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:10:47,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:10:47,716 INFO L87 Difference]: Start difference. First operand 176 states and 214 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:48,211 INFO L93 Difference]: Finished difference Result 406 states and 507 transitions. [2024-12-02 07:10:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:10:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 07:10:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:48,215 INFO L225 Difference]: With dead ends: 406 [2024-12-02 07:10:48,215 INFO L226 Difference]: Without dead ends: 296 [2024-12-02 07:10:48,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:10:48,216 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 173 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:48,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 494 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:10:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-12-02 07:10:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 268. [2024-12-02 07:10:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.2209737827715357) internal successors, (326), 267 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 326 transitions. [2024-12-02 07:10:48,246 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 326 transitions. Word has length 39 [2024-12-02 07:10:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:48,246 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 326 transitions. [2024-12-02 07:10:48,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 326 transitions. [2024-12-02 07:10:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 07:10:48,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:48,249 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:48,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:10:48,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:48,449 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:48,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 952596541, now seen corresponding path program 2 times [2024-12-02 07:10:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4768105] [2024-12-02 07:10:48,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:10:48,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:48,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:48,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:10:48,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:10:48,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:48,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:10:48,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:10:48,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:10:48,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4768105] [2024-12-02 07:10:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4768105] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:48,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-12-02 07:10:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655131521] [2024-12-02 07:10:48,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:48,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:10:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:48,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:10:48,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:10:48,861 INFO L87 Difference]: Start difference. First operand 268 states and 326 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:48,989 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2024-12-02 07:10:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:10:48,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-12-02 07:10:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:48,991 INFO L225 Difference]: With dead ends: 289 [2024-12-02 07:10:48,991 INFO L226 Difference]: Without dead ends: 271 [2024-12-02 07:10:48,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:10:48,992 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:48,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:10:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-12-02 07:10:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2024-12-02 07:10:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.212686567164179) internal successors, (325), 268 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 325 transitions. [2024-12-02 07:10:49,015 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 325 transitions. Word has length 45 [2024-12-02 07:10:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:49,016 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 325 transitions. [2024-12-02 07:10:49,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 325 transitions. [2024-12-02 07:10:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 07:10:49,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:49,018 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:49,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:10:49,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:49,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1646453183, now seen corresponding path program 3 times [2024-12-02 07:10:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399919000] [2024-12-02 07:10:49,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:10:49,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:49,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:49,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:49,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:10:49,482 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 07:10:49,482 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:49,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:10:49,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:49,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:49,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399919000] [2024-12-02 07:10:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399919000] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:49,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:49,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-12-02 07:10:49,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971529412] [2024-12-02 07:10:49,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:49,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:10:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:49,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:10:49,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:10:49,805 INFO L87 Difference]: Start difference. First operand 269 states and 325 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:51,233 INFO L93 Difference]: Finished difference Result 610 states and 756 transitions. [2024-12-02 07:10:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 07:10:51,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 07:10:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:51,235 INFO L225 Difference]: With dead ends: 610 [2024-12-02 07:10:51,235 INFO L226 Difference]: Without dead ends: 461 [2024-12-02 07:10:51,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 07:10:51,237 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 429 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:51,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 811 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:10:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-12-02 07:10:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 418. [2024-12-02 07:10:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.2038369304556356) internal successors, (502), 417 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 502 transitions. [2024-12-02 07:10:51,263 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 502 transitions. Word has length 49 [2024-12-02 07:10:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:51,263 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 502 transitions. [2024-12-02 07:10:51,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 502 transitions. [2024-12-02 07:10:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 07:10:51,264 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:51,264 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2024-12-02 07:10:51,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:10:51,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:51,464 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:51,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:51,465 INFO L85 PathProgramCache]: Analyzing trace with hash -780551303, now seen corresponding path program 4 times [2024-12-02 07:10:51,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:51,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408129971] [2024-12-02 07:10:51,466 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 07:10:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:51,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:51,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:10:51,570 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 07:10:51,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:51,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:10:51,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:10:51,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:10:51,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408129971] [2024-12-02 07:10:51,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408129971] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:51,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:51,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-12-02 07:10:51,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348709085] [2024-12-02 07:10:51,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:51,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:10:51,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:51,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:10:51,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:10:51,851 INFO L87 Difference]: Start difference. First operand 418 states and 502 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:53,056 INFO L93 Difference]: Finished difference Result 825 states and 998 transitions. [2024-12-02 07:10:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 07:10:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 07:10:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:53,058 INFO L225 Difference]: With dead ends: 825 [2024-12-02 07:10:53,059 INFO L226 Difference]: Without dead ends: 473 [2024-12-02 07:10:53,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=332, Invalid=1390, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 07:10:53,060 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 260 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:53,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 527 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:10:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-12-02 07:10:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 458. [2024-12-02 07:10:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.1903719912472648) internal successors, (544), 457 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 544 transitions. [2024-12-02 07:10:53,081 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 544 transitions. Word has length 53 [2024-12-02 07:10:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:53,081 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 544 transitions. [2024-12-02 07:10:53,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 544 transitions. [2024-12-02 07:10:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:10:53,082 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:53,082 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 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 07:10:53,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:10:53,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:53,283 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:53,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash -565483973, now seen corresponding path program 2 times [2024-12-02 07:10:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:53,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724620376] [2024-12-02 07:10:53,283 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:10:53,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:53,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:53,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:53,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:10:53,395 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:10:53,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:53,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:10:53,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:53,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:10:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:10:53,659 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724620376] [2024-12-02 07:10:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724620376] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:10:53,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:10:53,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-12-02 07:10:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743310819] [2024-12-02 07:10:53,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:10:53,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:10:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:53,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:10:53,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:10:53,661 INFO L87 Difference]: Start difference. First operand 458 states and 544 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:54,925 INFO L93 Difference]: Finished difference Result 910 states and 1119 transitions. [2024-12-02 07:10:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 07:10:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 07:10:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:54,929 INFO L225 Difference]: With dead ends: 910 [2024-12-02 07:10:54,929 INFO L226 Difference]: Without dead ends: 736 [2024-12-02 07:10:54,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:10:54,930 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 1158 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:54,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1299 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:10:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-12-02 07:10:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 668. [2024-12-02 07:10:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.199400299850075) internal successors, (800), 667 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 800 transitions. [2024-12-02 07:10:54,986 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 800 transitions. Word has length 57 [2024-12-02 07:10:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:54,986 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 800 transitions. [2024-12-02 07:10:54,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 16 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 800 transitions. [2024-12-02 07:10:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:10:54,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:54,987 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:54,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:10:55,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:55,188 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash 629537843, now seen corresponding path program 5 times [2024-12-02 07:10:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:55,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235499643] [2024-12-02 07:10:55,189 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 07:10:55,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:55,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:55,191 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:55,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:10:56,795 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-12-02 07:10:56,795 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:10:56,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 07:10:56,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:57,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-12-02 07:10:57,072 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 20 treesize of output 19 [2024-12-02 07:10:57,126 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 07:10:57,130 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 07:10:57,343 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 31 treesize of output 19 [2024-12-02 07:10:57,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:10:57,418 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 23 treesize of output 11 [2024-12-02 07:10:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 07:10:57,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:10:57,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:10:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235499643] [2024-12-02 07:10:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235499643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:10:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:10:57,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:10:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099192727] [2024-12-02 07:10:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:10:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:10:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:10:57,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:10:57,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:10:57,441 INFO L87 Difference]: Start difference. First operand 668 states and 800 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:10:58,331 INFO L93 Difference]: Finished difference Result 1033 states and 1242 transitions. [2024-12-02 07:10:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:10:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 07:10:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:10:58,336 INFO L225 Difference]: With dead ends: 1033 [2024-12-02 07:10:58,336 INFO L226 Difference]: Without dead ends: 980 [2024-12-02 07:10:58,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:10:58,337 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 77 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:10:58,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 424 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:10:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-12-02 07:10:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 804. [2024-12-02 07:10:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 1.224159402241594) internal successors, (983), 803 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 983 transitions. [2024-12-02 07:10:58,411 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 983 transitions. Word has length 57 [2024-12-02 07:10:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:10:58,411 INFO L471 AbstractCegarLoop]: Abstraction has 804 states and 983 transitions. [2024-12-02 07:10:58,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:10:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 983 transitions. [2024-12-02 07:10:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:10:58,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:10:58,412 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:10:58,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 07:10:58,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:58,613 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:10:58,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:10:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1614042927, now seen corresponding path program 1 times [2024-12-02 07:10:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:10:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368514344] [2024-12-02 07:10:58,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:10:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:10:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:10:58,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:10:58,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:10:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:10:58,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 07:10:58,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:10:58,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-12-02 07:10:58,842 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-12-02 07:10:58,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-12-02 07:10:58,918 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 07:10:58,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 20 [2024-12-02 07:10:59,102 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2024-12-02 07:10:59,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2024-12-02 07:10:59,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:10:59,293 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 1 [2024-12-02 07:10:59,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 59 treesize of output 28 [2024-12-02 07:10:59,363 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 52 treesize of output 36 [2024-12-02 07:10:59,382 INFO L349 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2024-12-02 07:10:59,382 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 41 [2024-12-02 07:10:59,480 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 07:10:59,494 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 07:10:59,902 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 91 treesize of output 55 [2024-12-02 07:11:00,010 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 44 treesize of output 32 [2024-12-02 07:11:00,119 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-12-02 07:11:00,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 22 [2024-12-02 07:11:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:11:00,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:11:00,389 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 114 treesize of output 106 [2024-12-02 07:11:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:11:00,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:11:00,417 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 66 treesize of output 58 [2024-12-02 07:11:00,724 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 470 treesize of output 458 [2024-12-02 07:11:01,591 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 322 treesize of output 314 [2024-12-02 07:11:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:11:11,967 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:11:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368514344] [2024-12-02 07:11:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368514344] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:11:11,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:11:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2024-12-02 07:11:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417012533] [2024-12-02 07:11:11,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:11:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:11:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:11:11,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:11:11,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2024-12-02 07:11:11,969 INFO L87 Difference]: Start difference. First operand 804 states and 983 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:11:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:14,633 INFO L93 Difference]: Finished difference Result 1300 states and 1577 transitions. [2024-12-02 07:11:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 07:11:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 07:11:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:14,638 INFO L225 Difference]: With dead ends: 1300 [2024-12-02 07:11:14,638 INFO L226 Difference]: Without dead ends: 1196 [2024-12-02 07:11:14,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=154, Invalid=1034, Unknown=2, NotChecked=0, Total=1190 [2024-12-02 07:11:14,640 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 114 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:14,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 645 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:11:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-12-02 07:11:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 976. [2024-12-02 07:11:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 1.2328205128205127) internal successors, (1202), 975 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:11:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1202 transitions. [2024-12-02 07:11:14,729 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1202 transitions. Word has length 59 [2024-12-02 07:11:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:14,729 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1202 transitions. [2024-12-02 07:11:14,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:11:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1202 transitions. [2024-12-02 07:11:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 07:11:14,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:14,731 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:14,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:11:14,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:11:14,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:14,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1464343765, now seen corresponding path program 2 times [2024-12-02 07:11:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:11:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189931914] [2024-12-02 07:11:14,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:11:14,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:11:14,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:11:14,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:11:14,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973553a-ac7c-44a2-ba06-2cc1150b86f3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:11:15,055 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:11:15,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:11:15,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 07:11:15,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:11:15,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-12-02 07:11:15,151 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 07:11:15,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 20 [2024-12-02 07:11:15,315 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-12-02 07:11:15,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-12-02 07:11:15,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:11:15,673 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-12-02 07:11:15,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-12-02 07:11:15,855 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 11 treesize of output 7 [2024-12-02 07:11:15,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2024-12-02 07:11:16,267 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2024-12-02 07:11:16,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 42 [2024-12-02 07:11:16,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 22 [2024-12-02 07:11:16,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2024-12-02 07:11:16,488 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-12-02 07:11:16,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 103 treesize of output 62 [2024-12-02 07:11:16,684 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 07:11:16,734 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 07:11:17,830 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 152 treesize of output 104 [2024-12-02 07:11:18,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-12-02 07:11:18,658 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-12-02 07:11:18,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 41 [2024-12-02 07:11:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:11:18,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:11:19,370 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 436 treesize of output 404 [2024-12-02 07:11:19,375 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 540 treesize of output 476 [2024-12-02 07:11:55,317 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.base| (store (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_sll_create_#res#1.offset|) |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.offset| (_ bv0 32)))) (.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.base| (store (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.base|) .cse3 |c_ULTIMATE.start_sll_create_#res#1.base|) |c_ULTIMATE.start_node_create_with_sublist_~new_node~0#1.offset| (_ bv0 32))))) (let ((.cse11 (= |c_ULTIMATE.start_main_~#head~1#1.offset| |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse30 (select (select .cse5 |c_ULTIMATE.start_sll_create_#res#1.base|) |c_ULTIMATE.start_sll_create_#res#1.offset|)) (.cse18 (select (select .cse1 |c_ULTIMATE.start_sll_create_#res#1.base|) |c_ULTIMATE.start_sll_create_#res#1.offset|)) (.cse12 (= |c_ULTIMATE.start_sll_append_~head#1.base| |c_ULTIMATE.start_main_~#head~1#1.base|))) (let ((.cse0 (or (not .cse11) (not (= (_ bv0 32) (select (select .cse5 .cse30) .cse18))) (not .cse12))) (.cse17 (and .cse12 .cse11))) (and (or (and .cse0 (or (let ((.cse10 (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_arrayElimCell_50 (_ BitVec 32))) (let ((.cse16 (bvadd (_ bv4 32) v_arrayElimCell_50))) (let ((.cse13 (select (select .cse5 v_arrayElimCell_49) .cse16)) (.cse14 (select (select .cse1 v_arrayElimCell_49) .cse16))) (let ((.cse15 (select (select .cse1 .cse13) .cse14))) (or (not (= (select (select .cse5 (select (select .cse5 .cse13) .cse14)) .cse15) (_ bv0 32))) (= .cse15 (_ bv0 32))))))))) (and (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_arrayElimCell_50 (_ BitVec 32))) (let ((.cse4 (select .cse1 v_arrayElimCell_49)) (.cse2 (select .cse5 v_arrayElimCell_49)) (.cse9 (bvadd (_ bv4 32) v_arrayElimCell_50))) (let ((.cse6 (select .cse2 .cse9)) (.cse7 (select .cse4 .cse9))) (let ((.cse8 (select (select .cse1 .cse6) .cse7))) (or (= (select (select .cse1 (select .cse2 .cse3)) (select .cse4 .cse3)) (_ bv0 32)) (not (= (select (select .cse5 (select (select .cse5 .cse6) .cse7)) .cse8) (_ bv0 32))) (= .cse8 (_ bv0 32))))))) (or .cse10 .cse11) (or .cse10 .cse12))) .cse17)) (and (= .cse18 (_ bv0 32)) .cse12 .cse11)) (or (and .cse0 (or (let ((.cse19 (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_arrayElimCell_50 (_ BitVec 32))) (let ((.cse29 (bvadd (_ bv4 32) v_arrayElimCell_50))) (let ((.cse27 (select (select .cse5 v_arrayElimCell_49) .cse29)) (.cse28 (select (select .cse1 v_arrayElimCell_49) .cse29))) (let ((.cse26 (select (select .cse5 .cse27) .cse28))) (or (= (_ bv0 32) .cse26) (not (= (select (select .cse5 .cse26) (select (select .cse1 .cse27) .cse28)) (_ bv0 32)))))))))) (and (or .cse12 .cse19) (or .cse19 .cse11) (forall ((v_arrayElimCell_49 (_ BitVec 32)) (v_arrayElimCell_50 (_ BitVec 32))) (let ((.cse24 (select .cse1 v_arrayElimCell_49)) (.cse23 (select .cse5 v_arrayElimCell_49)) (.cse25 (bvadd (_ bv4 32) v_arrayElimCell_50))) (let ((.cse21 (select .cse23 .cse25)) (.cse22 (select .cse24 .cse25))) (let ((.cse20 (select (select .cse5 .cse21) .cse22))) (or (= (_ bv0 32) .cse20) (not (= (select (select .cse5 .cse20) (select (select .cse1 .cse21) .cse22)) (_ bv0 32))) (= (_ bv0 32) (select (select .cse5 (select .cse23 .cse3)) (select .cse24 .cse3)))))))))) .cse17)) (and .cse12 (= (_ bv0 32) .cse30) .cse11))))))) is different from false [2024-12-02 07:13:37,805 WARN L286 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 646 DAG size of output: 466 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-12-02 07:13:37,806 INFO L349 Elim1Store]: treesize reduction 4860, result has 50.8 percent of original size [2024-12-02 07:13:37,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 23 new quantified variables, introduced 171 case distinctions, treesize of input 416786 treesize of output 397614 [2024-12-02 07:13:55,930 WARN L286 SmtUtils]: Spent 18.11s on a formula simplification. DAG size of input: 2453 DAG size of output: 1881 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 07:14:17,801 WARN L286 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 1482 DAG size of output: 1652 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)