./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd --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 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:02:20,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:02:21,035 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:02:21,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:02:21,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:02:21,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:02:21,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:02:21,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:02:21,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:02:21,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:02:21,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:02:21,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:02:21,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:02:21,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:02:21,096 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:02:21,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:02:21,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:02:21,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:02:21,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:02:21,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:02:21,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:02:21,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:02:21,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:02:21,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:02:21,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:02:21,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:02:21,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:02:21,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:02:21,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:02:21,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:02:21,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:02:21,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:02:21,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:02:21,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:02:21,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:02:21,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:02:21,105 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_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd 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 -> 1caf94d5755d978efe1a3e5e557e469a697b8b845c60d509025c0b6bf4eae4ae [2024-11-13 15:02:21,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:02:21,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:02:21,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:02:21,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:02:21,559 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:02:21,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-crafted/zero_sum5.c Unable to find full path for "g++" [2024-11-13 15:02:23,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:02:23,932 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:02:23,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/sv-benchmarks/c/array-crafted/zero_sum5.c [2024-11-13 15:02:23,944 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/data/8e994dc74/147bcc41e9e74a4397f186749c6c5128/FLAG1b47afc97 [2024-11-13 15:02:24,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/data/8e994dc74/147bcc41e9e74a4397f186749c6c5128 [2024-11-13 15:02:24,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:02:24,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:02:24,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:02:24,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:02:24,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:02:24,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e74021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24, skipping insertion in model container [2024-11-13 15:02:24,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:02:24,407 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_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/sv-benchmarks/c/array-crafted/zero_sum5.c[400,413] [2024-11-13 15:02:24,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:02:24,465 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:02:24,481 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_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/sv-benchmarks/c/array-crafted/zero_sum5.c[400,413] [2024-11-13 15:02:24,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:02:24,541 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:02:24,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24 WrapperNode [2024-11-13 15:02:24,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:02:24,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:02:24,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:02:24,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:02:24,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,595 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-11-13 15:02:24,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:02:24,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:02:24,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:02:24,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:02:24,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,643 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:02:24,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:02:24,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:02:24,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:02:24,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:02:24,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (1/1) ... [2024-11-13 15:02:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:02:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:24,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:02:24,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:02:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:02:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:02:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:02:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:02:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:02:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:02:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:02:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:02:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:02:24,904 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:02:24,907 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:02:25,167 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 15:02:25,167 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:02:25,181 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:02:25,181 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-13 15:02:25,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:02:25 BoogieIcfgContainer [2024-11-13 15:02:25,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:02:25,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:02:25,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:02:25,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:02:25,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:02:24" (1/3) ... [2024-11-13 15:02:25,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4c7084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:02:25, skipping insertion in model container [2024-11-13 15:02:25,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:02:24" (2/3) ... [2024-11-13 15:02:25,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4c7084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:02:25, skipping insertion in model container [2024-11-13 15:02:25,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:02:25" (3/3) ... [2024-11-13 15:02:25,194 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum5.c [2024-11-13 15:02:25,214 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:02:25,217 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum5.c that has 1 procedures, 33 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-13 15:02:25,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:02:25,287 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;@1ae73c6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:02:25,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:02:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:02:25,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:25,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:25,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:25,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1165822974, now seen corresponding path program 1 times [2024-11-13 15:02:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678710869] [2024-11-13 15:02:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678710869] [2024-11-13 15:02:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678710869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:25,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:25,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:25,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988317538] [2024-11-13 15:02:25,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:25,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:25,774 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-13 15:02:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:25,900 INFO L93 Difference]: Finished difference Result 63 states and 108 transitions. [2024-11-13 15:02:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 27 [2024-11-13 15:02:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:25,912 INFO L225 Difference]: With dead ends: 63 [2024-11-13 15:02:25,912 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 15:02:25,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:25,921 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:25,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:02:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 15:02:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 15:02:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-13 15:02:25,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 27 [2024-11-13 15:02:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:25,974 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-13 15:02:25,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-13 15:02:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-13 15:02:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:02:25,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:25,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:25,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:02:25,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:25,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash 876551951, now seen corresponding path program 1 times [2024-11-13 15:02:25,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:25,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070852493] [2024-11-13 15:02:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:02:26,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070852493] [2024-11-13 15:02:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070852493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:26,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:26,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:02:26,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758235309] [2024-11-13 15:02:26,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:02:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:02:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:02:26,188 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:26,357 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2024-11-13 15:02:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:02:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-13 15:02:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:26,362 INFO L225 Difference]: With dead ends: 61 [2024-11-13 15:02:26,362 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 15:02:26,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:02:26,363 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:26,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 19 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:02:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 15:02:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 15:02:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-13 15:02:26,384 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2024-11-13 15:02:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:26,384 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-13 15:02:26,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:26,386 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-13 15:02:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:02:26,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:26,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:26,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:02:26,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:26,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1801970607, now seen corresponding path program 1 times [2024-11-13 15:02:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685455666] [2024-11-13 15:02:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:02:26,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685455666] [2024-11-13 15:02:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685455666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983052140] [2024-11-13 15:02:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:26,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:26,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:26,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:26,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:02:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:26,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:02:26,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:02:27,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:02:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983052140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:27,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:02:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082934007] [2024-11-13 15:02:27,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:27,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:02:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:02:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:02:27,089 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:27,272 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-13 15:02:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:02:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 15:02:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:27,274 INFO L225 Difference]: With dead ends: 74 [2024-11-13 15:02:27,274 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 15:02:27,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:02:27,275 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:27,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:02:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 15:02:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 15:02:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-13 15:02:27,284 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 38 [2024-11-13 15:02:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:27,284 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-13 15:02:27,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-13 15:02:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:02:27,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:27,285 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:27,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:02:27,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:27,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:27,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1726262266, now seen corresponding path program 2 times [2024-11-13 15:02:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140197138] [2024-11-13 15:02:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:02:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140197138] [2024-11-13 15:02:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140197138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781581495] [2024-11-13 15:02:27,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:02:27,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:27,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:27,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:27,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:02:27,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:02:27,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:27,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:02:27,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:02:27,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:02:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781581495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:27,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 15:02:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787998502] [2024-11-13 15:02:27,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:27,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:02:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:02:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:27,971 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:28,191 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2024-11-13 15:02:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:02:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 15:02:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:28,193 INFO L225 Difference]: With dead ends: 81 [2024-11-13 15:02:28,193 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 15:02:28,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:28,194 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:28,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:02:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 15:02:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-13 15:02:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-13 15:02:28,205 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 39 [2024-11-13 15:02:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:28,205 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-13 15:02:28,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-13 15:02:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:02:28,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:28,206 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:28,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:02:28,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:28,411 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:28,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1644522342, now seen corresponding path program 3 times [2024-11-13 15:02:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65614982] [2024-11-13 15:02:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:34,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65614982] [2024-11-13 15:02:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65614982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520043596] [2024-11-13 15:02:34,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:02:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:34,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:34,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:02:34,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:02:34,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:34,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-13 15:02:34,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:34,667 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 [2024-11-13 15:02:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:35,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:37,523 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 33 treesize of output 29 [2024-11-13 15:02:37,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:37,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 68 treesize of output 56 [2024-11-13 15:02:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:02:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520043596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:37,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:37,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 19] total 38 [2024-11-13 15:02:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538743388] [2024-11-13 15:02:37,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:37,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:02:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:02:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:02:37,714 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:39,168 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2024-11-13 15:02:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-13 15:02:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:39,170 INFO L225 Difference]: With dead ends: 91 [2024-11-13 15:02:39,170 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 15:02:39,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:02:39,173 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:39,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:02:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 15:02:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-11-13 15:02:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2024-11-13 15:02:39,192 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 49 [2024-11-13 15:02:39,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:39,192 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2024-11-13 15:02:39,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2024-11-13 15:02:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 15:02:39,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:39,194 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:39,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:02:39,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:39,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:39,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:39,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1796453777, now seen corresponding path program 4 times [2024-11-13 15:02:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:39,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413369615] [2024-11-13 15:02:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:02:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413369615] [2024-11-13 15:02:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413369615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273766753] [2024-11-13 15:02:39,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:02:39,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:39,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:02:39,700 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:02:39,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:39,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:02:39,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:02:39,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:02:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273766753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:39,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:39,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-13 15:02:39,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769858474] [2024-11-13 15:02:39,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:39,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:02:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:02:39,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:02:39,919 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:40,411 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2024-11-13 15:02:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-13 15:02:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:40,413 INFO L225 Difference]: With dead ends: 178 [2024-11-13 15:02:40,413 INFO L226 Difference]: Without dead ends: 97 [2024-11-13 15:02:40,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:02:40,414 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:40,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 79 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:02:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-13 15:02:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2024-11-13 15:02:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2024-11-13 15:02:40,444 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 50 [2024-11-13 15:02:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:40,446 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2024-11-13 15:02:40,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2024-11-13 15:02:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:02:40,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:40,448 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:40,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:02:40,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 15:02:40,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:40,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 756170182, now seen corresponding path program 5 times [2024-11-13 15:02:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288515226] [2024-11-13 15:02:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:40,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:02:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288515226] [2024-11-13 15:02:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288515226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776508637] [2024-11-13 15:02:40,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:02:40,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:40,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:40,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:02:41,140 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 15:02:41,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:41,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:02:41,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:02:41,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:02:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776508637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:41,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 15:02:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457399067] [2024-11-13 15:02:41,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:41,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:02:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:02:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:02:41,343 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:41,599 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2024-11-13 15:02:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:02:41,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-13 15:02:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:41,601 INFO L225 Difference]: With dead ends: 97 [2024-11-13 15:02:41,601 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 15:02:41,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:02:41,603 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:41,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 64 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:02:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 15:02:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 15:02:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-13 15:02:41,616 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 51 [2024-11-13 15:02:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:41,617 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-13 15:02:41,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-13 15:02:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:02:41,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:41,621 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-13 15:02:41,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:02:41,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:02:41,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:41,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -6153393, now seen corresponding path program 6 times [2024-11-13 15:02:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:41,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333365595] [2024-11-13 15:02:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:49,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:49,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333365595] [2024-11-13 15:02:49,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333365595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:49,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531309046] [2024-11-13 15:02:49,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:02:49,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:49,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:49,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:49,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:02:49,286 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:02:49,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:49,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 15:02:49,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:02:50,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:51,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:51,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2024-11-13 15:02:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:02:51,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531309046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:51,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 12, 12] total 49 [2024-11-13 15:02:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716222290] [2024-11-13 15:02:51,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:51,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 15:02:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 15:02:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 15:02:51,461 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 49 states, 49 states have (on average 3.204081632653061) internal successors, (157), 49 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:56,833 INFO L93 Difference]: Finished difference Result 243 states and 297 transitions. [2024-11-13 15:02:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 15:02:56,833 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.204081632653061) internal successors, (157), 49 states have internal predecessors, (157), 0 states have call successors, (0), 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 60 [2024-11-13 15:02:56,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:56,841 INFO L225 Difference]: With dead ends: 243 [2024-11-13 15:02:56,841 INFO L226 Difference]: Without dead ends: 159 [2024-11-13 15:02:56,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=502, Invalid=4754, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 15:02:56,848 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 86 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:56,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 247 Invalid, 3222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 15:02:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-13 15:02:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 138. [2024-11-13 15:02:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.2116788321167884) internal successors, (166), 137 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2024-11-13 15:02:56,884 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 166 transitions. Word has length 60 [2024-11-13 15:02:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:56,884 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 166 transitions. [2024-11-13 15:02:56,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.204081632653061) internal successors, (157), 49 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 166 transitions. [2024-11-13 15:02:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 15:02:56,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:56,886 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-11-13 15:02:56,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:02:57,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:57,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:57,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1622201903, now seen corresponding path program 7 times [2024-11-13 15:02:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113974370] [2024-11-13 15:02:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:02:57,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113974370] [2024-11-13 15:02:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113974370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:57,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221141896] [2024-11-13 15:02:57,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:02:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:57,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:02:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:57,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:02:57,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:02:57,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:02:57,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221141896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:57,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 15:02:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279038332] [2024-11-13 15:02:57,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:57,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:02:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:02:57,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:02:57,737 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:58,034 INFO L93 Difference]: Finished difference Result 192 states and 237 transitions. [2024-11-13 15:02:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:58,034 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-13 15:02:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:58,036 INFO L225 Difference]: With dead ends: 192 [2024-11-13 15:02:58,038 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 15:02:58,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:02:58,040 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:58,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 48 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:02:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 15:02:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-13 15:02:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-13 15:02:58,062 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 62 [2024-11-13 15:02:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:58,063 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-13 15:02:58,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-13 15:02:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:02:58,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:58,064 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:58,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:02:58,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:58,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:58,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash 920883142, now seen corresponding path program 8 times [2024-11-13 15:02:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:58,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003727237] [2024-11-13 15:02:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003727237] [2024-11-13 15:03:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003727237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244770597] [2024-11-13 15:03:08,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:03:08,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:08,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:08,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:03:08,536 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:03:08,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:08,540 WARN L253 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-13 15:03:08,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:08,592 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 [2024-11-13 15:03:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:09,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:03:10,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244770597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:10,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 18, 13] total 63 [2024-11-13 15:03:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328035990] [2024-11-13 15:03:10,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:10,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 15:03:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 15:03:10,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=3656, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:03:10,754 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 63 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 63 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:17,931 INFO L93 Difference]: Finished difference Result 232 states and 283 transitions. [2024-11-13 15:03:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 15:03:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 63 states have internal predecessors, (185), 0 states have call successors, (0), 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 71 [2024-11-13 15:03:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:17,934 INFO L225 Difference]: With dead ends: 232 [2024-11-13 15:03:17,934 INFO L226 Difference]: Without dead ends: 228 [2024-11-13 15:03:17,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=786, Invalid=9114, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 15:03:17,939 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 61 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 4340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:17,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 231 Invalid, 4340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:03:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-13 15:03:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 172. [2024-11-13 15:03:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1988304093567252) internal successors, (205), 171 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2024-11-13 15:03:18,008 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 71 [2024-11-13 15:03:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:18,009 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2024-11-13 15:03:18,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 63 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2024-11-13 15:03:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 15:03:18,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:18,011 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:18,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:03:18,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:18,212 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:18,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:18,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1515728177, now seen corresponding path program 9 times [2024-11-13 15:03:18,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:18,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389877961] [2024-11-13 15:03:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-13 15:03:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389877961] [2024-11-13 15:03:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389877961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2672550] [2024-11-13 15:03:18,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:03:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:18,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:18,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:03:18,673 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 15:03:18,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:18,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:03:18,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-13 15:03:18,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-13 15:03:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2672550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:19,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:19,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 15:03:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504498654] [2024-11-13 15:03:19,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:19,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:03:19,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:03:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:03:19,130 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 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) [2024-11-13 15:03:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:19,718 INFO L93 Difference]: Finished difference Result 372 states and 442 transitions. [2024-11-13 15:03:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:03:19,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 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 72 [2024-11-13 15:03:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:19,721 INFO L225 Difference]: With dead ends: 372 [2024-11-13 15:03:19,721 INFO L226 Difference]: Without dead ends: 166 [2024-11-13 15:03:19,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 128 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:03:19,722 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:19,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:03:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-13 15:03:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-13 15:03:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 165 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2024-11-13 15:03:19,788 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 72 [2024-11-13 15:03:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:19,788 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2024-11-13 15:03:19,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 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) [2024-11-13 15:03:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2024-11-13 15:03:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 15:03:19,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:19,790 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:19,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:03:19,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:03:19,991 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:19,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:19,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1848143206, now seen corresponding path program 10 times [2024-11-13 15:03:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:19,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196793136] [2024-11-13 15:03:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-13 15:03:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196793136] [2024-11-13 15:03:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196793136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691381046] [2024-11-13 15:03:20,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:03:20,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:20,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:20,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:20,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:03:20,407 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:03:20,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:20,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:03:20,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-13 15:03:20,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-13 15:03:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691381046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:21,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-13 15:03:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309729042] [2024-11-13 15:03:21,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:21,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:03:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:03:21,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:03:21,058 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:21,585 INFO L93 Difference]: Finished difference Result 284 states and 348 transitions. [2024-11-13 15:03:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:03:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 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 73 [2024-11-13 15:03:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:21,587 INFO L225 Difference]: With dead ends: 284 [2024-11-13 15:03:21,587 INFO L226 Difference]: Without dead ends: 139 [2024-11-13 15:03:21,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 124 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:03:21,589 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:21,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 114 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:03:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-13 15:03:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 83. [2024-11-13 15:03:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2024-11-13 15:03:21,629 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 73 [2024-11-13 15:03:21,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:21,629 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2024-11-13 15:03:21,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2024-11-13 15:03:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 15:03:21,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:21,631 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2024-11-13 15:03:21,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 15:03:21,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:03:21,832 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:21,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1614226705, now seen corresponding path program 11 times [2024-11-13 15:03:21,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:21,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138090329] [2024-11-13 15:03:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 9 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138090329] [2024-11-13 15:03:34,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138090329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286416103] [2024-11-13 15:03:34,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:03:34,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:34,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:34,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:03:35,341 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:03:35,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:35,347 WARN L253 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 225 conjuncts are in the unsatisfiable core [2024-11-13 15:03:35,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:35,383 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 [2024-11-13 15:03:35,393 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 [2024-11-13 15:03:35,404 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 [2024-11-13 15:03:35,475 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 [2024-11-13 15:03:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:36,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:03:38,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286416103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:38,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:38,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 21, 15] total 70 [2024-11-13 15:03:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306401268] [2024-11-13 15:03:38,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:38,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-13 15:03:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-13 15:03:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=4559, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 15:03:38,126 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 70 states, 70 states have (on average 3.1285714285714286) internal successors, (219), 70 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:45,468 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2024-11-13 15:03:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:03:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.1285714285714286) internal successors, (219), 70 states have internal predecessors, (219), 0 states have call successors, (0), 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 82 [2024-11-13 15:03:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:45,471 INFO L225 Difference]: With dead ends: 186 [2024-11-13 15:03:45,471 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 15:03:45,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=678, Invalid=9222, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 15:03:45,474 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 4569 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 5271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 4569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:45,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 276 Invalid, 5271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 4569 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 15:03:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 15:03:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 86. [2024-11-13 15:03:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 85 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2024-11-13 15:03:45,520 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 82 [2024-11-13 15:03:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:45,520 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2024-11-13 15:03:45,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.1285714285714286) internal successors, (219), 70 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2024-11-13 15:03:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 15:03:45,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:45,523 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2024-11-13 15:03:45,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:03:45,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:03:45,723 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:45,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1500245190, now seen corresponding path program 12 times [2024-11-13 15:03:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:45,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409639983] [2024-11-13 15:03:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:03:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409639983] [2024-11-13 15:03:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409639983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5552892] [2024-11-13 15:03:46,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:03:46,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:46,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:46,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:46,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:03:46,259 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 15:03:46,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:46,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:03:46,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:03:46,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:03:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5552892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:46,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-13 15:03:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760029442] [2024-11-13 15:03:46,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:46,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:03:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:03:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:03:46,886 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 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) [2024-11-13 15:03:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:47,728 INFO L93 Difference]: Finished difference Result 239 states and 278 transitions. [2024-11-13 15:03:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:03:47,729 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 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 83 [2024-11-13 15:03:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:47,730 INFO L225 Difference]: With dead ends: 239 [2024-11-13 15:03:47,730 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 15:03:47,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 147 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:03:47,731 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:47,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:03:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 15:03:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2024-11-13 15:03:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2024-11-13 15:03:47,768 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 83 [2024-11-13 15:03:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:47,769 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2024-11-13 15:03:47,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 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) [2024-11-13 15:03:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2024-11-13 15:03:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:03:47,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:47,770 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1] [2024-11-13 15:03:47,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:03:47,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:03:47,971 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:47,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1048522639, now seen corresponding path program 13 times [2024-11-13 15:03:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037704806] [2024-11-13 15:03:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:03:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037704806] [2024-11-13 15:03:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037704806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017805564] [2024-11-13 15:03:48,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:03:48,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:48,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:03:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:48,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:03:48,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:03:48,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:03:49,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017805564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:49,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 15:03:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8828301] [2024-11-13 15:03:49,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:49,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:03:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:03:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:03:49,121 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:49,502 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2024-11-13 15:03:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:03:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-13 15:03:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:49,505 INFO L225 Difference]: With dead ends: 98 [2024-11-13 15:03:49,508 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:03:49,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 164 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:03:49,510 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:49,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:03:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:03:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 15:03:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-13 15:03:49,600 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 92 [2024-11-13 15:03:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:49,601 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-13 15:03:49,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-13 15:03:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 15:03:49,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:49,603 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:49,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:03:49,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:03:49,807 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:49,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1853871066, now seen corresponding path program 14 times [2024-11-13 15:03:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603456453] [2024-11-13 15:03:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 19 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:05,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603456453] [2024-11-13 15:04:05,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603456453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791372897] [2024-11-13 15:04:05,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:04:05,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:05,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:05,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:05,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:04:06,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:04:06,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:06,076 WARN L253 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 261 conjuncts are in the unsatisfiable core [2024-11-13 15:04:06,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:06,300 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 [2024-11-13 15:04:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:07,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:04:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791372897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:09,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:09,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 24, 17] total 79 [2024-11-13 15:04:09,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880366030] [2024-11-13 15:04:09,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:09,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-13 15:04:09,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-13 15:04:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=5863, Unknown=0, NotChecked=0, Total=6162 [2024-11-13 15:04:09,573 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 79 states, 79 states have (on average 3.0759493670886076) internal successors, (243), 79 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:19,252 INFO L93 Difference]: Finished difference Result 206 states and 243 transitions. [2024-11-13 15:04:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 15:04:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.0759493670886076) internal successors, (243), 79 states have internal predecessors, (243), 0 states have call successors, (0), 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 93 [2024-11-13 15:04:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:19,255 INFO L225 Difference]: With dead ends: 206 [2024-11-13 15:04:19,255 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 15:04:19,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2998 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=819, Invalid=11837, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 15:04:19,260 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 5796 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 6590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 5796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:19,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 317 Invalid, 6590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 5796 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-13 15:04:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 15:04:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 97. [2024-11-13 15:04:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.125) internal successors, (108), 96 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-13 15:04:19,312 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 93 [2024-11-13 15:04:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:19,313 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-13 15:04:19,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.0759493670886076) internal successors, (243), 79 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-13 15:04:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 15:04:19,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:19,314 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:19,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:04:19,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:04:19,515 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:19,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1633762705, now seen corresponding path program 15 times [2024-11-13 15:04:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582405480] [2024-11-13 15:04:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:04:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:19,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582405480] [2024-11-13 15:04:19,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582405480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:19,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943248121] [2024-11-13 15:04:19,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:04:19,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:19,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:19,875 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:19,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:04:20,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 15:04:20,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:20,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:04:20,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:04:20,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:04:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943248121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:20,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 15:04:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135861490] [2024-11-13 15:04:20,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:20,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:04:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:04:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:04:20,621 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:21,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:21,292 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2024-11-13 15:04:21,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:04:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 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 94 [2024-11-13 15:04:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:21,294 INFO L225 Difference]: With dead ends: 258 [2024-11-13 15:04:21,294 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 15:04:21,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 166 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:04:21,295 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:21,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:04:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 15:04:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-13 15:04:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2024-11-13 15:04:21,366 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 94 [2024-11-13 15:04:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:21,367 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2024-11-13 15:04:21,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2024-11-13 15:04:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 15:04:21,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:21,368 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:21,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:04:21,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:04:21,569 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:21,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1601093178, now seen corresponding path program 16 times [2024-11-13 15:04:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156182197] [2024-11-13 15:04:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:04:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156182197] [2024-11-13 15:04:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156182197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680335260] [2024-11-13 15:04:22,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:04:22,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:22,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:22,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:22,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:04:22,183 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:04:22,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:22,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:04:22,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:04:22,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:04:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680335260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:22,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:22,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-13 15:04:22,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993364561] [2024-11-13 15:04:22,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:22,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 15:04:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 15:04:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:04:22,982 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:23,726 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2024-11-13 15:04:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:04:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 0 states have call successors, (0), 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 95 [2024-11-13 15:04:23,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:23,727 INFO L225 Difference]: With dead ends: 184 [2024-11-13 15:04:23,728 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 15:04:23,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 160 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=307, Invalid=1763, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 15:04:23,729 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 102 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:23,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 100 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:04:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 15:04:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 15:04:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 104 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2024-11-13 15:04:23,805 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 95 [2024-11-13 15:04:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:23,805 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2024-11-13 15:04:23,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2024-11-13 15:04:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 15:04:23,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:23,807 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:23,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:04:24,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:04:24,008 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:24,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 558244495, now seen corresponding path program 17 times [2024-11-13 15:04:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797001663] [2024-11-13 15:04:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:24,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 30 proven. 278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797001663] [2024-11-13 15:04:45,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797001663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123566496] [2024-11-13 15:04:45,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:04:45,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:45,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:45,175 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:45,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:04:46,104 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 15:04:46,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:46,112 WARN L253 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 303 conjuncts are in the unsatisfiable core [2024-11-13 15:04:46,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:46,194 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 [2024-11-13 15:04:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:47,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 15:04:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123566496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:49,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 27, 19] total 86 [2024-11-13 15:04:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24507565] [2024-11-13 15:04:49,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:49,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-13 15:04:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-13 15:04:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=6876, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 15:04:49,637 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 86 states, 86 states have (on average 2.9651162790697674) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:58,777 INFO L93 Difference]: Finished difference Result 312 states and 352 transitions. [2024-11-13 15:04:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 15:04:58,778 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.9651162790697674) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-13 15:04:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:58,779 INFO L225 Difference]: With dead ends: 312 [2024-11-13 15:04:58,779 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 15:04:58,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3929 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1057, Invalid=13223, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 15:04:58,781 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 6678 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 7528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 6678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:58,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 398 Invalid, 7528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 6678 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 15:04:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 15:04:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 181. [2024-11-13 15:04:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.1111111111111112) internal successors, (200), 180 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2024-11-13 15:04:58,896 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 104 [2024-11-13 15:04:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:58,896 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2024-11-13 15:04:58,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.9651162790697674) internal successors, (255), 86 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2024-11-13 15:04:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 15:04:58,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:58,899 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:58,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:04:59,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:59,099 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:59,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1145566895, now seen corresponding path program 18 times [2024-11-13 15:04:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:59,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195456835] [2024-11-13 15:04:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:04:59,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195456835] [2024-11-13 15:04:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195456835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848318568] [2024-11-13 15:04:59,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:04:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:59,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:59,629 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:59,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:04:59,931 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 15:04:59,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:59,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:04:59,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:05:00,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:05:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:05:00,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848318568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:05:00,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:05:00,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2024-11-13 15:05:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103774380] [2024-11-13 15:05:00,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:05:00,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:05:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:05:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1024, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:05:00,742 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 36 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:01,812 INFO L93 Difference]: Finished difference Result 267 states and 303 transitions. [2024-11-13 15:05:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:05:01,813 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 36 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-13 15:05:01,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:01,814 INFO L225 Difference]: With dead ends: 267 [2024-11-13 15:05:01,814 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 15:05:01,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 187 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 15:05:01,816 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:01,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 122 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:05:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 15:05:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-13 15:05:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0956521739130434) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-11-13 15:05:01,895 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 106 [2024-11-13 15:05:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:01,895 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-11-13 15:05:01,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 36 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-11-13 15:05:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 15:05:01,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:01,897 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:01,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 15:05:02,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:02,101 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:05:02,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -30326650, now seen corresponding path program 19 times [2024-11-13 15:05:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:02,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764362159] [2024-11-13 15:05:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:02,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 37 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:25,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764362159] [2024-11-13 15:05:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764362159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:05:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226068985] [2024-11-13 15:05:25,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:05:25,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:25,675 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:25,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:05:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:25,872 WARN L253 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 348 conjuncts are in the unsatisfiable core [2024-11-13 15:05:25,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:26,070 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 [2024-11-13 15:05:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:27,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:05:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 15:05:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226068985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:05:30,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:05:30,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 30, 21] total 101 [2024-11-13 15:05:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397577450] [2024-11-13 15:05:30,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:05:30,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-13 15:05:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-13 15:05:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=9610, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 15:05:30,350 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:43,715 INFO L93 Difference]: Finished difference Result 469 states and 527 transitions. [2024-11-13 15:05:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-13 15:05:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-13 15:05:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:43,718 INFO L225 Difference]: With dead ends: 469 [2024-11-13 15:05:43,718 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 15:05:43,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6534 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1618, Invalid=21334, Unknown=0, NotChecked=0, Total=22952 [2024-11-13 15:05:43,722 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 103 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 7051 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 8488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 7051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:43,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 299 Invalid, 8488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1437 Valid, 7051 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 15:05:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 15:05:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 253. [2024-11-13 15:05:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1111111111111112) internal successors, (280), 252 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 280 transitions. [2024-11-13 15:05:43,898 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 280 transitions. Word has length 115 [2024-11-13 15:05:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:43,898 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 280 transitions. [2024-11-13 15:05:43,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 280 transitions. [2024-11-13 15:05:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 15:05:43,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:43,901 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:43,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:05:44,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:44,101 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:05:44,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1167815130, now seen corresponding path program 20 times [2024-11-13 15:05:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109886885] [2024-11-13 15:05:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:05:44,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109886885] [2024-11-13 15:05:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109886885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:05:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191008132] [2024-11-13 15:05:44,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:05:44,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:44,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:44,674 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:44,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:05:44,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:05:44,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:05:44,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:05:44,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:05:45,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:05:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:05:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191008132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:05:45,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:05:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-13 15:05:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129072113] [2024-11-13 15:05:45,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:05:45,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:05:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:05:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:05:45,333 INFO L87 Difference]: Start difference. First operand 253 states and 280 transitions. Second operand has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:45,906 INFO L93 Difference]: Finished difference Result 346 states and 389 transitions. [2024-11-13 15:05:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:05:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 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 117 [2024-11-13 15:05:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:45,908 INFO L225 Difference]: With dead ends: 346 [2024-11-13 15:05:45,908 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 15:05:45,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 18 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:05:45,911 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:45,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 89 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:05:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 15:05:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-13 15:05:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2024-11-13 15:05:46,013 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 117 [2024-11-13 15:05:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:46,013 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2024-11-13 15:05:46,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.09375) internal successors, (67), 32 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:46,013 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2024-11-13 15:05:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:05:46,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:46,014 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:46,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:05:46,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:46,215 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:05:46,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1308881455, now seen corresponding path program 21 times [2024-11-13 15:05:46,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:46,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241551179] [2024-11-13 15:05:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:06:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 66 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:06:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241551179] [2024-11-13 15:06:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241551179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:06:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055133673] [2024-11-13 15:06:16,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:06:16,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:16,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:16,114 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:16,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:06:16,490 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 15:06:16,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:16,498 WARN L253 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 401 conjuncts are in the unsatisfiable core [2024-11-13 15:06:16,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:16,573 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 19 treesize of output 1 [2024-11-13 15:06:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:06:24,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:24,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 58 treesize of output 93 [2024-11-13 15:06:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 6 proven. 474 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:06:25,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:06:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:06:33,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055133673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:06:33,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:06:33,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 42, 36] total 134 [2024-11-13 15:06:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680039723] [2024-11-13 15:06:33,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:06:33,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-13 15:06:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:06:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-13 15:06:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1068, Invalid=16754, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 15:06:33,491 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 134 states, 134 states have (on average 2.6791044776119404) internal successors, (359), 134 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:01,548 INFO L93 Difference]: Finished difference Result 375 states and 433 transitions. [2024-11-13 15:07:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-13 15:07:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.6791044776119404) internal successors, (359), 134 states have internal predecessors, (359), 0 states have call successors, (0), 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 126 [2024-11-13 15:07:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:01,551 INFO L225 Difference]: With dead ends: 375 [2024-11-13 15:07:01,551 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 15:07:01,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 216 SyntacticMatches, 18 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11831 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=3131, Invalid=38281, Unknown=0, NotChecked=0, Total=41412 [2024-11-13 15:07:01,553 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 87 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 11821 mSolverCounterSat, 2549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 14370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2549 IncrementalHoareTripleChecker+Valid, 11821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:01,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 496 Invalid, 14370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2549 Valid, 11821 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-11-13 15:07:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 15:07:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 200. [2024-11-13 15:07:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0904522613065326) internal successors, (217), 199 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 217 transitions. [2024-11-13 15:07:01,732 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 217 transitions. Word has length 126 [2024-11-13 15:07:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:01,732 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 217 transitions. [2024-11-13 15:07:01,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.6791044776119404) internal successors, (359), 134 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 217 transitions. [2024-11-13 15:07:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 15:07:01,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:01,734 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:01,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:07:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:01,935 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:07:01,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2079062042, now seen corresponding path program 22 times [2024-11-13 15:07:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627110643] [2024-11-13 15:07:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 15:07:02,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627110643] [2024-11-13 15:07:02,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627110643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:07:02,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468757458] [2024-11-13 15:07:02,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:07:02,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:02,432 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:02,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:07:02,641 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:07:02,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:02,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:07:02,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 15:07:03,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:07:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-13 15:07:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468757458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:07:03,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:07:03,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-13 15:07:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589822989] [2024-11-13 15:07:03,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:07:03,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 15:07:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:07:03,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 15:07:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 15:07:03,693 INFO L87 Difference]: Start difference. First operand 200 states and 217 transitions. Second operand has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:07:05,603 INFO L93 Difference]: Finished difference Result 325 states and 361 transitions. [2024-11-13 15:07:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 15:07:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 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 129 [2024-11-13 15:07:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:07:05,606 INFO L225 Difference]: With dead ends: 325 [2024-11-13 15:07:05,606 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 15:07:05,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 216 SyntacticMatches, 11 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=759, Invalid=4643, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 15:07:05,608 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:07:05,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 123 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:07:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 15:07:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-13 15:07:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2024-11-13 15:07:05,730 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 129 [2024-11-13 15:07:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:07:05,730 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2024-11-13 15:07:05,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 54 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2024-11-13 15:07:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-13 15:07:05,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:07:05,731 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:07:05,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:07:05,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:05,931 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:07:05,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1154272486, now seen corresponding path program 23 times [2024-11-13 15:07:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:07:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250568280] [2024-11-13 15:07:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:07:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:07:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 68 proven. 537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:45,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:07:45,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250568280] [2024-11-13 15:07:45,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250568280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:07:45,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029347882] [2024-11-13 15:07:45,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:07:45,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:45,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:45,187 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:45,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:07:48,293 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 15:07:48,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:48,308 WARN L253 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 447 conjuncts are in the unsatisfiable core [2024-11-13 15:07:48,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:48,345 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 [2024-11-13 15:07:48,355 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 [2024-11-13 15:07:48,364 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 [2024-11-13 15:07:48,375 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 [2024-11-13 15:07:48,390 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 [2024-11-13 15:07:48,488 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 [2024-11-13 15:07:48,597 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 [2024-11-13 15:07:48,696 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 [2024-11-13 15:07:48,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:08:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:00,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:08:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 15:08:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029347882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:08:18,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:08:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 69, 58] total 194 [2024-11-13 15:08:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698501274] [2024-11-13 15:08:18,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:08:18,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2024-11-13 15:08:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2024-11-13 15:08:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1495, Invalid=35947, Unknown=0, NotChecked=0, Total=37442 [2024-11-13 15:08:18,578 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 194 states, 194 states have (on average 1.8762886597938144) internal successors, (364), 194 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:09,868 INFO L93 Difference]: Finished difference Result 536 states and 598 transitions. [2024-11-13 15:09:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-13 15:09:09,869 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.8762886597938144) internal successors, (364), 194 states have internal predecessors, (364), 0 states have call successors, (0), 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 137 [2024-11-13 15:09:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:09,871 INFO L225 Difference]: With dead ends: 536 [2024-11-13 15:09:09,871 INFO L226 Difference]: Without dead ends: 382 [2024-11-13 15:09:09,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23986 ImplicationChecksByTransitivity, 63.1s TimeCoverageRelationStatistics Valid=4908, Invalid=74898, Unknown=0, NotChecked=0, Total=79806 [2024-11-13 15:09:09,875 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 162 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 14490 mSolverCounterSat, 3276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 17766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3276 IncrementalHoareTripleChecker+Valid, 14490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:09,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 461 Invalid, 17766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3276 Valid, 14490 Invalid, 0 Unknown, 0 Unchecked, 21.3s Time] [2024-11-13 15:09:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-13 15:09:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 295. [2024-11-13 15:09:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.0952380952380953) internal successors, (322), 294 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2024-11-13 15:09:10,306 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 137 [2024-11-13 15:09:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:10,306 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2024-11-13 15:09:10,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.8762886597938144) internal successors, (364), 194 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2024-11-13 15:09:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 15:09:10,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:10,308 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:10,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:10,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 15:09:10,509 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:10,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -888354481, now seen corresponding path program 24 times [2024-11-13 15:09:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524722073] [2024-11-13 15:09:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-11-13 15:09:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524722073] [2024-11-13 15:09:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524722073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862995302] [2024-11-13 15:09:11,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:09:11,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:11,147 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:11,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:09:11,630 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 15:09:11,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:11,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:09:11,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-11-13 15:09:12,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-11-13 15:09:12,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862995302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:12,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:12,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-13 15:09:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839912369] [2024-11-13 15:09:12,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:12,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:09:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:09:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1067, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:09:12,420 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:13,143 INFO L93 Difference]: Finished difference Result 391 states and 432 transitions. [2024-11-13 15:09:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:09:13,144 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 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 140 [2024-11-13 15:09:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:13,146 INFO L225 Difference]: With dead ends: 391 [2024-11-13 15:09:13,146 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 15:09:13,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 245 SyntacticMatches, 22 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=353, Invalid=1129, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:09:13,148 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:13,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:09:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 15:09:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-13 15:09:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0743243243243243) internal successors, (159), 148 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 159 transitions. [2024-11-13 15:09:13,344 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 159 transitions. Word has length 140 [2024-11-13 15:09:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:13,345 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 159 transitions. [2024-11-13 15:09:13,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 159 transitions. [2024-11-13 15:09:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-13 15:09:13,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:13,345 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:13,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:09:13,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:13,546 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:13,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2073278001, now seen corresponding path program 25 times [2024-11-13 15:09:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:13,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574616492] [2024-11-13 15:09:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:13,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 74 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:57,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574616492] [2024-11-13 15:09:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574616492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:57,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670074080] [2024-11-13 15:09:57,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:09:57,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:57,706 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:57,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:09:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:57,952 WARN L253 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 474 conjuncts are in the unsatisfiable core [2024-11-13 15:09:57,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:58,213 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 [2024-11-13 15:09:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:59,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 15:10:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670074080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:10:04,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:10:04,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 39, 27] total 138 [2024-11-13 15:10:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589478075] [2024-11-13 15:10:04,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:10:04,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2024-11-13 15:10:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2024-11-13 15:10:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=18037, Unknown=0, NotChecked=0, Total=18906 [2024-11-13 15:10:04,936 INFO L87 Difference]: Start difference. First operand 149 states and 159 transitions. Second operand has 138 states, 138 states have (on average 2.7028985507246377) internal successors, (373), 138 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:27,658 INFO L93 Difference]: Finished difference Result 547 states and 605 transitions. [2024-11-13 15:10:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-13 15:10:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 2.7028985507246377) internal successors, (373), 138 states have internal predecessors, (373), 0 states have call successors, (0), 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 148 [2024-11-13 15:10:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:27,662 INFO L225 Difference]: With dead ends: 547 [2024-11-13 15:10:27,662 INFO L226 Difference]: Without dead ends: 383 [2024-11-13 15:10:27,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12035 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=2593, Invalid=39227, Unknown=0, NotChecked=0, Total=41820 [2024-11-13 15:10:27,664 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 114 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 12055 mSolverCounterSat, 2644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 14699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2644 IncrementalHoareTripleChecker+Valid, 12055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:27,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 312 Invalid, 14699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2644 Valid, 12055 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2024-11-13 15:10:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-13 15:10:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 244. [2024-11-13 15:10:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.0781893004115226) internal successors, (262), 243 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 262 transitions. [2024-11-13 15:10:27,984 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 262 transitions. Word has length 148 [2024-11-13 15:10:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:27,984 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 262 transitions. [2024-11-13 15:10:27,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 2.7028985507246377) internal successors, (373), 138 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 262 transitions. [2024-11-13 15:10:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-13 15:10:27,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:27,986 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:28,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:10:28,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:28,186 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:28,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1684593489, now seen corresponding path program 26 times [2024-11-13 15:10:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118693204] [2024-11-13 15:10:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-11-13 15:10:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118693204] [2024-11-13 15:10:28,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118693204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:10:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849427162] [2024-11-13 15:10:28,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:10:28,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:28,866 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:28,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:10:29,090 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:10:29,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:10:29,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:10:29,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-11-13 15:10:29,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:10:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2024-11-13 15:10:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849427162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:10:29,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:10:29,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-13 15:10:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635675736] [2024-11-13 15:10:29,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:10:29,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 15:10:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 15:10:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 15:10:29,806 INFO L87 Difference]: Start difference. First operand 244 states and 262 transitions. Second operand has 41 states, 41 states have (on average 1.853658536585366) internal successors, (76), 41 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:30,520 INFO L93 Difference]: Finished difference Result 375 states and 411 transitions. [2024-11-13 15:10:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:10:30,521 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.853658536585366) internal successors, (76), 41 states have internal predecessors, (76), 0 states have call successors, (0), 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 150 [2024-11-13 15:10:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:30,523 INFO L225 Difference]: With dead ends: 375 [2024-11-13 15:10:30,523 INFO L226 Difference]: Without dead ends: 160 [2024-11-13 15:10:30,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 262 SyntacticMatches, 24 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:10:30,524 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 141 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:30,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 54 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:10:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-13 15:10:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-13 15:10:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.069182389937107) internal successors, (170), 159 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2024-11-13 15:10:30,691 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 150 [2024-11-13 15:10:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:30,691 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2024-11-13 15:10:30,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.853658536585366) internal successors, (76), 41 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2024-11-13 15:10:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-13 15:10:30,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:30,692 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:30,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:10:30,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:10:30,893 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:30,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -928460474, now seen corresponding path program 27 times [2024-11-13 15:10:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224766237] [2024-11-13 15:10:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:11:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 163 proven. 695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:11:18,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:11:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224766237] [2024-11-13 15:11:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224766237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:11:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250079057] [2024-11-13 15:11:18,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:11:18,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:11:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:11:18,321 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:11:18,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:11:18,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 15:11:18,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:11:18,738 WARN L253 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 509 conjuncts are in the unsatisfiable core [2024-11-13 15:11:18,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:11:18,800 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 19 treesize of output 1 [2024-11-13 15:11:32,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:32,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:11:33,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:11:33,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-13 15:11:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 12 proven. 780 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 15:11:33,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:11:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 15:11:56,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250079057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:11:56,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:11:56,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 68, 70] total 233 [2024-11-13 15:11:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700012768] [2024-11-13 15:11:56,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:11:56,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 233 states [2024-11-13 15:11:56,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:11:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2024-11-13 15:11:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2896, Invalid=51160, Unknown=0, NotChecked=0, Total=54056 [2024-11-13 15:11:56,076 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 233 states, 233 states have (on average 1.9356223175965666) internal successors, (451), 233 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:13:28,778 INFO L93 Difference]: Finished difference Result 735 states and 812 transitions. [2024-11-13 15:13:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2024-11-13 15:13:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 233 states, 233 states have (on average 1.9356223175965666) internal successors, (451), 233 states have internal predecessors, (451), 0 states have call successors, (0), 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 159 [2024-11-13 15:13:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:13:28,782 INFO L225 Difference]: With dead ends: 735 [2024-11-13 15:13:28,782 INFO L226 Difference]: Without dead ends: 513 [2024-11-13 15:13:28,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 221 SyntacticMatches, 13 SemanticMatches, 367 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38921 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=12795, Invalid=122997, Unknown=0, NotChecked=0, Total=135792 [2024-11-13 15:13:28,788 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1084 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 24835 mSolverCounterSat, 10364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 35199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10364 IncrementalHoareTripleChecker+Valid, 24835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:13:28,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 635 Invalid, 35199 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10364 Valid, 24835 Invalid, 0 Unknown, 0 Unchecked, 36.5s Time] [2024-11-13 15:13:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-13 15:13:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 173. [2024-11-13 15:13:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0872093023255813) internal successors, (187), 172 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2024-11-13 15:13:29,327 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 159 [2024-11-13 15:13:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:13:29,327 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2024-11-13 15:13:29,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 233 states, 233 states have (on average 1.9356223175965666) internal successors, (451), 233 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2024-11-13 15:13:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-13 15:13:29,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:13:29,329 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:13:29,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 15:13:29,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:13:29,530 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:13:29,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:13:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -98157425, now seen corresponding path program 28 times [2024-11-13 15:13:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:13:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19777574] [2024-11-13 15:13:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:13:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:13:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:13:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 79 proven. 90 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-11-13 15:13:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:13:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19777574] [2024-11-13 15:13:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19777574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:13:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992160570] [2024-11-13 15:13:30,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:13:30,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:13:30,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:13:30,379 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:13:30,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:13:30,636 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:13:30,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:13:30,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:13:30,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:13:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-11-13 15:13:31,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:13:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-11-13 15:13:31,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992160570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:13:31,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:13:31,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-13 15:13:31,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296774313] [2024-11-13 15:13:31,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:13:31,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:13:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:13:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:13:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2539, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:13:31,975 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 56 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:13:34,391 INFO L93 Difference]: Finished difference Result 452 states and 489 transitions. [2024-11-13 15:13:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:13:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 56 states have internal predecessors, (94), 0 states have call successors, (0), 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 164 [2024-11-13 15:13:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:13:34,394 INFO L225 Difference]: With dead ends: 452 [2024-11-13 15:13:34,394 INFO L226 Difference]: Without dead ends: 171 [2024-11-13 15:13:34,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 276 SyntacticMatches, 25 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=835, Invalid=3721, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 15:13:34,395 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1267 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:13:34,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 117 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1267 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:13:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-13 15:13:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-13 15:13:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0647058823529412) internal successors, (181), 170 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2024-11-13 15:13:34,646 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 164 [2024-11-13 15:13:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:13:34,647 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2024-11-13 15:13:34,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 56 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:13:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2024-11-13 15:13:34,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-13 15:13:34,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:13:34,648 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:13:34,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:13:34,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:13:34,848 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:13:34,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:13:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1466509679, now seen corresponding path program 29 times [2024-11-13 15:13:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:13:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059602581] [2024-11-13 15:13:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:13:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:13:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:14:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 201 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:14:32,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:14:32,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059602581] [2024-11-13 15:14:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059602581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:14:32,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484810978] [2024-11-13 15:14:32,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:14:32,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:14:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:14:32,736 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:14:32,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:15:19,990 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 15:15:19,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:20,044 WARN L253 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 563 conjuncts are in the unsatisfiable core [2024-11-13 15:15:20,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:20,633 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 [2024-11-13 15:15:20,755 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 [2024-11-13 15:15:20,877 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 [2024-11-13 15:15:21,000 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 [2024-11-13 15:15:21,125 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 [2024-11-13 15:15:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:15:22,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:15:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 910 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 15:15:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484810978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:15:30,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:15:30,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 45, 31] total 152 [2024-11-13 15:15:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834637249] [2024-11-13 15:15:30,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:15:30,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2024-11-13 15:15:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:15:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2024-11-13 15:15:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=904, Invalid=22048, Unknown=0, NotChecked=0, Total=22952 [2024-11-13 15:15:30,127 INFO L87 Difference]: Start difference. First operand 171 states and 181 transitions. Second operand has 152 states, 152 states have (on average 2.8684210526315788) internal successors, (436), 152 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:56,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:15:56,618 INFO L93 Difference]: Finished difference Result 346 states and 383 transitions. [2024-11-13 15:15:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 15:15:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 2.8684210526315788) internal successors, (436), 152 states have internal predecessors, (436), 0 states have call successors, (0), 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 170 [2024-11-13 15:15:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:15:56,622 INFO L225 Difference]: With dead ends: 346 [2024-11-13 15:15:56,622 INFO L226 Difference]: Without dead ends: 342 [2024-11-13 15:15:56,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 338 SyntacticMatches, 10 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13274 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=2713, Invalid=43297, Unknown=0, NotChecked=0, Total=46010 [2024-11-13 15:15:56,625 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 14311 mSolverCounterSat, 2288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 16599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2288 IncrementalHoareTripleChecker+Valid, 14311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:15:56,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 471 Invalid, 16599 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2288 Valid, 14311 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2024-11-13 15:15:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-13 15:15:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 174. [2024-11-13 15:15:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.069364161849711) internal successors, (185), 173 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2024-11-13 15:15:56,911 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 170 [2024-11-13 15:15:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:15:56,911 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2024-11-13 15:15:56,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 2.8684210526315788) internal successors, (436), 152 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:15:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2024-11-13 15:15:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-13 15:15:56,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:15:56,913 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:15:56,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:15:57,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 15:15:57,113 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:15:57,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:15:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1781174714, now seen corresponding path program 30 times [2024-11-13 15:15:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:15:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793278239] [2024-11-13 15:15:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:15:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:15:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:15:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-11-13 15:15:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:15:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793278239] [2024-11-13 15:15:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793278239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:15:57,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637906988] [2024-11-13 15:15:57,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:15:57,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:15:57,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:15:57,869 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:15:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5d09aa1-f4c9-47f9-9b6c-0aac1be8cc09/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:15:58,845 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 15:15:58,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:15:58,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:15:58,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:15:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-11-13 15:15:59,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:16:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-11-13 15:16:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637906988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:16:00,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:16:00,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 60 [2024-11-13 15:16:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572024841] [2024-11-13 15:16:00,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:16:00,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 15:16:00,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:16:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 15:16:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2923, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 15:16:00,431 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand has 60 states, 60 states have (on average 1.8833333333333333) internal successors, (113), 60 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)