./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_const1.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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_const1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/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 be1a0182ecf6c8aa754e6086345670fff3439e7c706169309311fcaa402caa1e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:18:52,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:18:52,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:18:52,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:18:52,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:18:52,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:18:52,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:18:52,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:18:52,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:18:52,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:18:52,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:18:52,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:18:52,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:18:52,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:18:52,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:18:52,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:18:52,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:18:52,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:18:52,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:18:52,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:18:52,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:18:52,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:18:52,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:52,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:18:52,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:18:52,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:18:52,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:18:52,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:18:52,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:18:52,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:18:52,648 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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/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 -> be1a0182ecf6c8aa754e6086345670fff3439e7c706169309311fcaa402caa1e [2024-11-13 16:18:52,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:18:52,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:18:52,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:18:52,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:18:52,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:18:52,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-crafted/zero_sum_const1.c Unable to find full path for "g++" [2024-11-13 16:18:54,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:18:55,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:18:55,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/sv-benchmarks/c/array-crafted/zero_sum_const1.c [2024-11-13 16:18:55,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/data/31624f405/75ecafc484984d6d9efd189e046f2021/FLAG2ba7fb5ff [2024-11-13 16:18:55,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/data/31624f405/75ecafc484984d6d9efd189e046f2021 [2024-11-13 16:18:55,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:18:55,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:18:55,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:55,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:18:55,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:18:55,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee3a737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55, skipping insertion in model container [2024-11-13 16:18:55,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:18:55,377 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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/sv-benchmarks/c/array-crafted/zero_sum_const1.c[406,419] [2024-11-13 16:18:55,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:55,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:18:55,426 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_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/sv-benchmarks/c/array-crafted/zero_sum_const1.c[406,419] [2024-11-13 16:18:55,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:18:55,462 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:18:55,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55 WrapperNode [2024-11-13 16:18:55,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:18:55,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:55,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:18:55,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:18:55,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,501 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-13 16:18:55,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:18:55,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:18:55,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:18:55,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:18:55,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,536 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 16:18:55,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:18:55,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:18:55,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:18:55,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:18:55,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (1/1) ... [2024-11-13 16:18:55,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:18:55,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:55,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:18:55,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:18:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:18:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:18:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:18:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:18:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:18:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:18:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:18:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:18:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:18:55,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:18:55,738 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:18:55,740 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:18:55,935 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-13 16:18:55,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:18:55,947 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:18:55,947 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 16:18:55,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:55 BoogieIcfgContainer [2024-11-13 16:18:55,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:18:55,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:18:55,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:18:55,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:18:55,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:18:55" (1/3) ... [2024-11-13 16:18:55,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:55, skipping insertion in model container [2024-11-13 16:18:55,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:18:55" (2/3) ... [2024-11-13 16:18:55,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12de5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:18:55, skipping insertion in model container [2024-11-13 16:18:55,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:18:55" (3/3) ... [2024-11-13 16:18:55,960 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_const1.c [2024-11-13 16:18:55,977 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:18:55,979 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_const1.c that has 1 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 16:18:56,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:18:56,063 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;@3a778f35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:18:56,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:18:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:18:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:18:56,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:56,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:56,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:56,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -126208042, now seen corresponding path program 1 times [2024-11-13 16:18:56,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:56,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075350962] [2024-11-13 16:18:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:56,382 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 16:18:56,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:56,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075350962] [2024-11-13 16:18:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075350962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:56,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:56,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:18:56,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247315074] [2024-11-13 16:18:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:56,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:18:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:56,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:18:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:18:56,419 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:18:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:56,467 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2024-11-13 16:18:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:18:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-13 16:18:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:56,480 INFO L225 Difference]: With dead ends: 31 [2024-11-13 16:18:56,480 INFO L226 Difference]: Without dead ends: 13 [2024-11-13 16:18:56,484 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 16:18:56,489 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:56,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-13 16:18:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-13 16:18:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 16:18:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-13 16:18:56,526 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2024-11-13 16:18:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:56,526 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-13 16:18:56,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:18:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-13 16:18:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:18:56,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:56,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:56,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:18:56,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:56,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2011903521, now seen corresponding path program 1 times [2024-11-13 16:18:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:56,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149600688] [2024-11-13 16:18:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:56,722 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 16:18:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149600688] [2024-11-13 16:18:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149600688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:18:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:18:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:18:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31509099] [2024-11-13 16:18:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:18:56,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:18:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:18:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:18:56,726 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 16:18:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:56,766 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2024-11-13 16:18:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:18:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-13 16:18:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:56,767 INFO L225 Difference]: With dead ends: 21 [2024-11-13 16:18:56,767 INFO L226 Difference]: Without dead ends: 15 [2024-11-13 16:18:56,767 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 16:18:56,768 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:56,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-13 16:18:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-13 16:18:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-13 16:18:56,773 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2024-11-13 16:18:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:56,774 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-13 16:18:56,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 16:18:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-13 16:18:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 16:18:56,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:56,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:56,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:18:56,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:56,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1575824895, now seen corresponding path program 1 times [2024-11-13 16:18:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573615059] [2024-11-13 16:18:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:56,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:18:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573615059] [2024-11-13 16:18:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573615059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204351859] [2024-11-13 16:18:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:56,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:56,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:18:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:57,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:18:57,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:18:57,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:18:57,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204351859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:57,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:57,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 16:18:57,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491219890] [2024-11-13 16:18:57,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:57,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:18:57,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:18:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:18:57,219 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:18:57,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:57,267 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-13 16:18:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:18:57,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 14 [2024-11-13 16:18:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:57,268 INFO L225 Difference]: With dead ends: 26 [2024-11-13 16:18:57,268 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 16:18:57,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 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 16:18:57,269 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:57,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:18:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 16:18:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 16:18:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 16:18:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-13 16:18:57,274 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2024-11-13 16:18:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:57,274 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-13 16:18:57,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:18:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-13 16:18:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:18:57,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:57,275 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:57,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:18:57,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:57,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1300925610, now seen corresponding path program 2 times [2024-11-13 16:18:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:57,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085513488] [2024-11-13 16:18:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:18:57,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085513488] [2024-11-13 16:18:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085513488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427999197] [2024-11-13 16:18:57,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:18:57,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:57,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:18:57,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:18:57,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:57,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:18:57,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:18:57,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:18:57,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427999197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:57,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:57,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 16:18:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565482287] [2024-11-13 16:18:57,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:57,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:18:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:18:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:18:57,861 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:18:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:57,926 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-13 16:18:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:18:57,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2024-11-13 16:18:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:57,929 INFO L225 Difference]: With dead ends: 25 [2024-11-13 16:18:57,929 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 16:18:57,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 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 16:18:57,931 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:57,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:18:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 16:18:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 16:18:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 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 16:18:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-13 16:18:57,937 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2024-11-13 16:18:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:57,938 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-13 16:18:57,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 16:18:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-13 16:18:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 16:18:57,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:57,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:57,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:18:58,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:58,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:58,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2300726, now seen corresponding path program 3 times [2024-11-13 16:18:58,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:58,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124653541] [2024-11-13 16:18:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:58,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:59,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124653541] [2024-11-13 16:18:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124653541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222238050] [2024-11-13 16:18:59,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:18:59,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:59,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:59,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:59,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:18:59,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:18:59,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:59,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:18:59,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:59,263 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 16:18:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:59,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:18:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222238050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:59,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 23 [2024-11-13 16:18:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622584074] [2024-11-13 16:18:59,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:59,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:18:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:18:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:18:59,768 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:00,023 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-13 16:19:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:19:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-13 16:19:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:00,024 INFO L225 Difference]: With dead ends: 27 [2024-11-13 16:19:00,024 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 16:19:00,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:19:00,026 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:00,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 16:19:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-13 16:19:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:19:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-13 16:19:00,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17 [2024-11-13 16:19:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:00,033 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-13 16:19:00,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-13 16:19:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:19:00,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:00,034 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:00,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:00,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:00,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash 72987903, now seen corresponding path program 4 times [2024-11-13 16:19:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819288210] [2024-11-13 16:19:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:19:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819288210] [2024-11-13 16:19:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819288210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585058487] [2024-11-13 16:19:00,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:00,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:00,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:00,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:19:00,440 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:00,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:00,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:19:00,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:19:00,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:19:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585058487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:00,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:19:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137235232] [2024-11-13 16:19:00,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:00,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:19:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:19:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:19:00,601 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:19:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:00,714 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-13 16:19:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:19:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 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 18 [2024-11-13 16:19:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:00,716 INFO L225 Difference]: With dead ends: 42 [2024-11-13 16:19:00,716 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 16:19:00,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:19:00,717 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:00,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 16:19:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2024-11-13 16:19:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 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 16:19:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-13 16:19:00,728 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2024-11-13 16:19:00,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:00,729 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-13 16:19:00,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 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 16:19:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-13 16:19:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:19:00,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:00,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:00,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:19:00,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:00,933 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1206817386, now seen corresponding path program 5 times [2024-11-13 16:19:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130549741] [2024-11-13 16:19:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130549741] [2024-11-13 16:19:01,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130549741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448436326] [2024-11-13 16:19:01,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:01,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:01,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:01,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:01,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:19:01,188 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:19:01,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:01,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:19:01,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:01,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:01,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448436326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:01,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:19:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605242331] [2024-11-13 16:19:01,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:01,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:19:01,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:19:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:19:01,381 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:01,516 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-13 16:19:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:19:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 16:19:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:01,518 INFO L225 Difference]: With dead ends: 25 [2024-11-13 16:19:01,518 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 16:19:01,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:19:01,519 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:01,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 16:19:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 16:19:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-13 16:19:01,525 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2024-11-13 16:19:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:01,525 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-13 16:19:01,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-13 16:19:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:19:01,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:01,526 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:01,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:19:01,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:01,730 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:01,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1245032095, now seen corresponding path program 6 times [2024-11-13 16:19:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88813833] [2024-11-13 16:19:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:02,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88813833] [2024-11-13 16:19:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88813833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539684958] [2024-11-13 16:19:02,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:19:02,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:02,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:02,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:02,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:19:02,931 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:19:02,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:02,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 16:19:02,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:02,975 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 16:19:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:03,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539684958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:03,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 11] total 31 [2024-11-13 16:19:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842296000] [2024-11-13 16:19:03,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:03,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 16:19:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 16:19:03,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:19:03,730 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:04,338 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-13 16:19:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:19:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 16:19:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:04,340 INFO L225 Difference]: With dead ends: 31 [2024-11-13 16:19:04,340 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 16:19:04,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:19:04,341 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:04,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:19:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 16:19:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2024-11-13 16:19:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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 16:19:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-13 16:19:04,350 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 20 [2024-11-13 16:19:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:04,350 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-13 16:19:04,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-13 16:19:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 16:19:04,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:04,351 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:04,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:19:04,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 16:19:04,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:04,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash -57045322, now seen corresponding path program 7 times [2024-11-13 16:19:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:04,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134872485] [2024-11-13 16:19:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:04,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:04,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134872485] [2024-11-13 16:19:04,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134872485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:04,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789168884] [2024-11-13 16:19:04,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:04,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:04,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:19:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:04,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:19:04,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:04,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789168884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:04,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:04,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 16:19:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873584867] [2024-11-13 16:19:05,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:19:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:19:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:19:05,003 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 16:19:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,128 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-11-13 16:19:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:19:05,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 21 [2024-11-13 16:19:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,129 INFO L225 Difference]: With dead ends: 48 [2024-11-13 16:19:05,129 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 16:19:05,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:19:05,130 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 16:19:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-11-13 16:19:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-13 16:19:05,137 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 21 [2024-11-13 16:19:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,137 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-13 16:19:05,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 16:19:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-13 16:19:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 16:19:05,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:19:05,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:05,343 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:05,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 765381311, now seen corresponding path program 8 times [2024-11-13 16:19:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962767916] [2024-11-13 16:19:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962767916] [2024-11-13 16:19:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962767916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792260194] [2024-11-13 16:19:05,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:05,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:05,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:05,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:05,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:19:05,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:05,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:05,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:19:05,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:05,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:05,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792260194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:05,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 16:19:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021626445] [2024-11-13 16:19:05,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:05,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:19:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:19:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:19:05,795 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 16:19:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:05,941 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-13 16:19:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:19:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 22 [2024-11-13 16:19:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:05,943 INFO L225 Difference]: With dead ends: 28 [2024-11-13 16:19:05,943 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 16:19:05,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:05,944 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:05,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 16:19:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 16:19:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 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 16:19:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-13 16:19:05,949 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 22 [2024-11-13 16:19:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:05,950 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-13 16:19:05,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 16:19:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-13 16:19:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 16:19:05,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:05,951 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:05,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:19:06,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:19:06,155 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:06,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2041317738, now seen corresponding path program 9 times [2024-11-13 16:19:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950914613] [2024-11-13 16:19:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:06,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950914613] [2024-11-13 16:19:07,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950914613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960449409] [2024-11-13 16:19:07,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:07,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:07,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:07,538 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:07,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:19:07,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:19:07,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:07,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 16:19:07,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:08,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:19:08,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-13 16:19:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:08,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:09,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:19:09,248 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 16:19:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:19:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960449409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 45 [2024-11-13 16:19:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150171619] [2024-11-13 16:19:09,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:09,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 16:19:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 16:19:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 16:19:09,724 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:13,693 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2024-11-13 16:19:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:19:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 16:19:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:13,694 INFO L225 Difference]: With dead ends: 75 [2024-11-13 16:19:13,694 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 16:19:13,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1064, Invalid=6768, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 16:19:13,698 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:13,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 160 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:19:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 16:19:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 34. [2024-11-13 16:19:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 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 16:19:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-13 16:19:13,713 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 23 [2024-11-13 16:19:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:13,714 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-13 16:19:13,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-13 16:19:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:19:13,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:13,715 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:13,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:19:13,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 16:19:13,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:13,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1145324959, now seen corresponding path program 10 times [2024-11-13 16:19:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676672949] [2024-11-13 16:19:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:14,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:14,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676672949] [2024-11-13 16:19:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676672949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:14,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740428778] [2024-11-13 16:19:14,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:14,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:14,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:14,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:19:14,157 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:14,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:14,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:19:14,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:14,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:19:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740428778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:14,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 16:19:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750547289] [2024-11-13 16:19:14,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:14,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:19:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:19:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:19:14,374 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:14,521 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-13 16:19:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:19:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 16:19:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:14,522 INFO L225 Difference]: With dead ends: 50 [2024-11-13 16:19:14,522 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 16:19:14,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:19:14,524 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:14,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 16:19:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 16:19:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 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 16:19:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-13 16:19:14,539 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-13 16:19:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:14,539 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-13 16:19:14,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-13 16:19:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:19:14,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:14,541 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:14,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:19:14,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:14,742 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:14,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1182582977, now seen corresponding path program 11 times [2024-11-13 16:19:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693786544] [2024-11-13 16:19:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:16,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693786544] [2024-11-13 16:19:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693786544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70305895] [2024-11-13 16:19:16,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:16,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:16,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:19:16,400 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 16:19:16,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:16,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 16:19:16,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:16,516 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 16:19:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:17,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:19:17,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70305895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:17,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:17,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 15] total 47 [2024-11-13 16:19:17,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498097015] [2024-11-13 16:19:17,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:17,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 16:19:17,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:17,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 16:19:17,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:19:17,777 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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 16:19:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:18,892 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-11-13 16:19:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:19:18,892 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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 26 [2024-11-13 16:19:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:18,893 INFO L225 Difference]: With dead ends: 40 [2024-11-13 16:19:18,893 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 16:19:18,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=256, Invalid=3404, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 16:19:18,895 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:18,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:19:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 16:19:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2024-11-13 16:19:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-13 16:19:18,906 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 26 [2024-11-13 16:19:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:18,906 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-13 16:19:18,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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 16:19:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-13 16:19:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:19:18,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:18,907 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:18,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:19:19,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:19,108 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:19,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1996298774, now seen corresponding path program 12 times [2024-11-13 16:19:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:19,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778439150] [2024-11-13 16:19:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:19:19,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778439150] [2024-11-13 16:19:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778439150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800288125] [2024-11-13 16:19:19,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:19:19,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:19,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:19,317 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:19,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:19:19,399 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 16:19:19,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:19,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:19:19,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:19:19,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:19:19,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800288125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:19,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:19,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 16:19:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702572746] [2024-11-13 16:19:19,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:19,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:19:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:19:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:19,708 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:19,984 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2024-11-13 16:19:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:19:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 16:19:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:19,985 INFO L225 Difference]: With dead ends: 60 [2024-11-13 16:19:19,985 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 16:19:19,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:19:19,986 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:19,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 16:19:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2024-11-13 16:19:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 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 16:19:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-13 16:19:19,998 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 27 [2024-11-13 16:19:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:19,998 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-13 16:19:19,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-13 16:19:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:19:19,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:19,999 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:20,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:19:20,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:19:20,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:20,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 954731359, now seen corresponding path program 13 times [2024-11-13 16:19:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778704427] [2024-11-13 16:19:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778704427] [2024-11-13 16:19:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778704427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:20,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449327543] [2024-11-13 16:19:20,406 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:20,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:20,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:20,408 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:20,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:19:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:20,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:19:20,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:20,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449327543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:20,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 16:19:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109705894] [2024-11-13 16:19:20,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:20,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:19:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:19:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:19:20,792 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:20,958 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-13 16:19:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 16:19:20,958 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-13 16:19:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:20,959 INFO L225 Difference]: With dead ends: 34 [2024-11-13 16:19:20,959 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 16:19:20,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:19:20,960 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:20,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 16:19:20,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 16:19:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-13 16:19:20,970 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2024-11-13 16:19:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:20,970 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-13 16:19:20,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-13 16:19:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:19:20,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:20,971 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:20,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:21,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:21,172 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:21,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -466433546, now seen corresponding path program 14 times [2024-11-13 16:19:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627508609] [2024-11-13 16:19:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:22,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627508609] [2024-11-13 16:19:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627508609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549141694] [2024-11-13 16:19:22,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:22,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:22,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:22,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:22,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:19:23,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:23,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:23,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 16:19:23,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:23,090 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 16:19:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:23,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549141694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:24,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:24,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 17] total 53 [2024-11-13 16:19:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429109705] [2024-11-13 16:19:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:24,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 16:19:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 16:19:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2587, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 16:19:24,698 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 53 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 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 16:19:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:26,153 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-13 16:19:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 16:19:26,154 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 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 29 [2024-11-13 16:19:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:26,154 INFO L225 Difference]: With dead ends: 44 [2024-11-13 16:19:26,154 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:19:26,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=279, Invalid=4277, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:19:26,156 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:26,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 110 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:19:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:19:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-13 16:19:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-13 16:19:26,172 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-11-13 16:19:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:26,172 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-13 16:19:26,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 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 16:19:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-13 16:19:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 16:19:26,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:26,173 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:26,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:19:26,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:26,374 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:26,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1572872641, now seen corresponding path program 15 times [2024-11-13 16:19:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759979981] [2024-11-13 16:19:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759979981] [2024-11-13 16:19:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759979981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759719860] [2024-11-13 16:19:26,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:26,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:26,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:19:26,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 16:19:26,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:26,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:19:26,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:26,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 16:19:27,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759719860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:27,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:27,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 16:19:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796850086] [2024-11-13 16:19:27,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:27,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:19:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:19:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:19:27,050 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:19:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:27,270 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-11-13 16:19:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:19:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 30 [2024-11-13 16:19:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:27,271 INFO L225 Difference]: With dead ends: 66 [2024-11-13 16:19:27,272 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 16:19:27,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:19:27,274 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:27,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 16:19:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-11-13 16:19:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-13 16:19:27,292 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 30 [2024-11-13 16:19:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:27,293 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-13 16:19:27,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:19:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-13 16:19:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:19:27,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:27,295 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:27,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:19:27,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:27,497 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:27,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash 554642518, now seen corresponding path program 16 times [2024-11-13 16:19:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644647298] [2024-11-13 16:19:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:27,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644647298] [2024-11-13 16:19:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644647298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961246710] [2024-11-13 16:19:27,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:27,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:27,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:27,756 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:27,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:19:27,844 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:27,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:27,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:19:27,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:28,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961246710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:28,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 16:19:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003668302] [2024-11-13 16:19:28,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:28,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:19:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:19:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:19:28,192 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:19:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:28,393 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-11-13 16:19:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:19:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 31 [2024-11-13 16:19:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:28,394 INFO L225 Difference]: With dead ends: 37 [2024-11-13 16:19:28,394 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 16:19:28,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:19:28,395 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:28,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 16:19:28,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 16:19:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-13 16:19:28,413 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2024-11-13 16:19:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:28,413 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-13 16:19:28,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:19:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-13 16:19:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 16:19:28,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:28,414 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:28,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:19:28,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:28,619 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:28,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 15714271, now seen corresponding path program 17 times [2024-11-13 16:19:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421422090] [2024-11-13 16:19:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:31,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421422090] [2024-11-13 16:19:31,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421422090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:31,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772489180] [2024-11-13 16:19:31,557 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:31,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:31,559 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:31,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:19:31,677 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 16:19:31,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:31,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-13 16:19:31,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:31,864 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 16:19:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:32,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:34,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772489180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:34,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:34,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 19] total 63 [2024-11-13 16:19:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159465244] [2024-11-13 16:19:34,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:34,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 16:19:34,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 16:19:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3695, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 16:19:34,254 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 63 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:36,376 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-11-13 16:19:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 16:19:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-13 16:19:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:36,377 INFO L225 Difference]: With dead ends: 48 [2024-11-13 16:19:36,377 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 16:19:36,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=350, Invalid=6130, Unknown=0, NotChecked=0, Total=6480 [2024-11-13 16:19:36,379 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:36,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 131 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:19:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 16:19:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-11-13 16:19:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 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 16:19:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-13 16:19:36,401 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 32 [2024-11-13 16:19:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:36,402 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-13 16:19:36,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 63 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-13 16:19:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 16:19:36,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:36,403 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:36,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:19:36,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:36,603 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:36,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 488807798, now seen corresponding path program 18 times [2024-11-13 16:19:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344502896] [2024-11-13 16:19:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:36,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344502896] [2024-11-13 16:19:36,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344502896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584211854] [2024-11-13 16:19:36,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:19:36,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:36,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:36,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:19:36,987 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 16:19:36,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:36,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:19:36,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:37,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:19:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584211854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:37,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:37,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 16:19:37,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110523855] [2024-11-13 16:19:37,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:37,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:19:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:37,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:19:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:19:37,443 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:37,655 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-11-13 16:19:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:19:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 16:19:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:37,656 INFO L225 Difference]: With dead ends: 72 [2024-11-13 16:19:37,656 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:19:37,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 16:19:37,657 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:37,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:19:37,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-11-13 16:19:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 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 16:19:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-13 16:19:37,675 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 33 [2024-11-13 16:19:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:37,675 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-13 16:19:37,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-13 16:19:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 16:19:37,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:37,676 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:37,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 16:19:37,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:37,876 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:37,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1904104447, now seen corresponding path program 19 times [2024-11-13 16:19:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065364445] [2024-11-13 16:19:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:38,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065364445] [2024-11-13 16:19:38,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065364445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166237869] [2024-11-13 16:19:38,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:38,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:38,169 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:38,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:19:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:38,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:19:38,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:38,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166237869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:38,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 16:19:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997620005] [2024-11-13 16:19:38,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:38,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:19:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:19:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:19:38,605 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:38,858 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-13 16:19:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 16:19:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-13 16:19:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:38,859 INFO L225 Difference]: With dead ends: 40 [2024-11-13 16:19:38,859 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 16:19:38,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=346, Invalid=1136, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 16:19:38,860 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:38,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 16:19:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-13 16:19:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-13 16:19:38,885 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 34 [2024-11-13 16:19:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:38,885 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-13 16:19:38,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-13 16:19:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:19:38,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:38,886 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:38,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 16:19:39,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:39,087 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:39,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1100638890, now seen corresponding path program 20 times [2024-11-13 16:19:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353762801] [2024-11-13 16:19:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 1 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:42,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353762801] [2024-11-13 16:19:42,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353762801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727348132] [2024-11-13 16:19:42,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:42,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:42,181 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:42,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:19:42,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:42,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:42,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 16:19:42,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:42,485 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 16:19:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:43,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727348132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:45,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 21] total 71 [2024-11-13 16:19:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59260751] [2024-11-13 16:19:45,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:45,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 16:19:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:45,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 16:19:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=4727, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 16:19:45,570 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:19:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:48,317 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-13 16:19:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:19:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 16:19:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:48,322 INFO L225 Difference]: With dead ends: 52 [2024-11-13 16:19:48,322 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 16:19:48,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=400, Invalid=7790, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 16:19:48,325 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:48,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:19:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 16:19:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2024-11-13 16:19:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-13 16:19:48,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 35 [2024-11-13 16:19:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:48,353 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-13 16:19:48,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:19:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-13 16:19:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:19:48,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:48,354 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:48,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:19:48,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:48,555 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:48,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash 241598175, now seen corresponding path program 21 times [2024-11-13 16:19:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638254993] [2024-11-13 16:19:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638254993] [2024-11-13 16:19:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638254993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839238218] [2024-11-13 16:19:48,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:48,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:48,868 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:48,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:19:49,047 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 16:19:49,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:49,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 16:19:49,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:49,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 16:19:49,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839238218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:49,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:49,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-13 16:19:49,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840172744] [2024-11-13 16:19:49,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:49,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:19:49,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:19:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:19:49,540 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 16:19:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:49,797 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-13 16:19:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 16:19:49,798 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 36 [2024-11-13 16:19:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:49,798 INFO L225 Difference]: With dead ends: 78 [2024-11-13 16:19:49,798 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:19:49,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 44 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 16:19:49,799 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:49,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:19:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-11-13 16:19:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-11-13 16:19:49,820 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 36 [2024-11-13 16:19:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:49,820 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-11-13 16:19:49,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 16:19:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-11-13 16:19:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 16:19:49,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:49,821 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:49,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 16:19:50,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 16:19:50,022 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:50,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:50,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1451491254, now seen corresponding path program 22 times [2024-11-13 16:19:50,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:50,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079808237] [2024-11-13 16:19:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:50,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:19:50,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:50,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079808237] [2024-11-13 16:19:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079808237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271790990] [2024-11-13 16:19:50,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:50,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:50,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:50,339 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:50,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:19:50,437 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:19:50,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:50,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 16:19:50,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:19:50,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:19:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271790990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:50,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-13 16:19:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009607701] [2024-11-13 16:19:50,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:50,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:19:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:19:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:19:50,897 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 16:19:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:51,133 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-11-13 16:19:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 16:19:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 37 [2024-11-13 16:19:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:51,137 INFO L225 Difference]: With dead ends: 43 [2024-11-13 16:19:51,137 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 16:19:51,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 18 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=418, Invalid=1388, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 16:19:51,138 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:51,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:19:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 16:19:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 16:19:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 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 16:19:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-13 16:19:51,166 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 37 [2024-11-13 16:19:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:51,166 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-13 16:19:51,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 16:19:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-13 16:19:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:19:51,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:51,167 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:51,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:19:51,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 16:19:51,372 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:51,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2048221311, now seen corresponding path program 23 times [2024-11-13 16:19:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139104939] [2024-11-13 16:19:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139104939] [2024-11-13 16:19:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139104939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:55,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580097837] [2024-11-13 16:19:55,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:19:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:55,129 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:55,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:19:55,403 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 16:19:55,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:55,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-13 16:19:55,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:55,559 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 16:19:55,614 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 16:19:55,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:19:55,711 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 16:19:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:57,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:19:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580097837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:59,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:59,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 23] total 79 [2024-11-13 16:19:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125762427] [2024-11-13 16:19:59,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:59,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-13 16:19:59,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-13 16:19:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=5842, Unknown=0, NotChecked=0, Total=6162 [2024-11-13 16:19:59,134 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 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 16:20:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:02,380 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2024-11-13 16:20:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:20:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 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) Word has length 38 [2024-11-13 16:20:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:02,381 INFO L225 Difference]: With dead ends: 56 [2024-11-13 16:20:02,381 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 16:20:02,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=574, Invalid=10346, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 16:20:02,382 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:02,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 16:20:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 16:20:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2024-11-13 16:20:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-13 16:20:02,416 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 38 [2024-11-13 16:20:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:02,416 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-13 16:20:02,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 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 16:20:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-13 16:20:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:20:02,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:02,417 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:02,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 16:20:02,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 16:20:02,617 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:02,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash -927983402, now seen corresponding path program 24 times [2024-11-13 16:20:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831147734] [2024-11-13 16:20:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:20:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831147734] [2024-11-13 16:20:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831147734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862722056] [2024-11-13 16:20:02,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:20:02,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:02,907 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:02,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:20:03,109 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 16:20:03,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:03,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:20:03,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:20:03,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:20:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862722056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:03,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:03,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-13 16:20:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220605076] [2024-11-13 16:20:03,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:03,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 16:20:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:03,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 16:20:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:20:03,563 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 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 16:20:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:03,817 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-13 16:20:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 16:20:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 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 39 [2024-11-13 16:20:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:03,818 INFO L225 Difference]: With dead ends: 84 [2024-11-13 16:20:03,818 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 16:20:03,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 47 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:20:03,818 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:03,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:20:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 16:20:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2024-11-13 16:20:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 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 16:20:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-11-13 16:20:03,838 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 39 [2024-11-13 16:20:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:03,838 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-11-13 16:20:03,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 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 16:20:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-11-13 16:20:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 16:20:03,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:03,839 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:03,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:20:04,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 16:20:04,040 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:04,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -360995681, now seen corresponding path program 25 times [2024-11-13 16:20:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192263165] [2024-11-13 16:20:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192263165] [2024-11-13 16:20:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192263165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335759528] [2024-11-13 16:20:04,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:20:04,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:04,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:04,383 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:04,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:20:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:04,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:20:04,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:04,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335759528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:05,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-13 16:20:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109949000] [2024-11-13 16:20:05,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:05,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 16:20:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 16:20:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:20:05,007 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:20:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:05,301 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-11-13 16:20:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:20:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-13 16:20:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:05,302 INFO L225 Difference]: With dead ends: 46 [2024-11-13 16:20:05,302 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 16:20:05,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:20:05,303 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:05,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 16:20:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-13 16:20:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 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 16:20:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-13 16:20:05,325 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 40 [2024-11-13 16:20:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:05,325 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-13 16:20:05,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:20:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-13 16:20:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 16:20:05,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:05,326 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:05,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 16:20:05,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 16:20:05,526 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:05,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1695701174, now seen corresponding path program 26 times [2024-11-13 16:20:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828303055] [2024-11-13 16:20:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:10,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828303055] [2024-11-13 16:20:10,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828303055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:10,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489706365] [2024-11-13 16:20:10,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:10,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:10,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:10,039 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:10,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:20:10,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:10,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:10,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-13 16:20:10,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:10,528 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 16:20:12,179 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 16:20:12,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489706365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:14,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35, 25] total 87 [2024-11-13 16:20:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988284152] [2024-11-13 16:20:14,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:14,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-13 16:20:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-13 16:20:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=7107, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 16:20:14,785 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 87 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:20:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:18,746 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-11-13 16:20:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 16:20:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 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 41 [2024-11-13 16:20:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:18,747 INFO L225 Difference]: With dead ends: 60 [2024-11-13 16:20:18,747 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 16:20:18,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3345 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=676, Invalid=12664, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 16:20:18,749 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:18,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:20:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 16:20:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2024-11-13 16:20:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-11-13 16:20:18,773 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 41 [2024-11-13 16:20:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:18,773 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-11-13 16:20:18,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:20:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-11-13 16:20:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:20:18,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:18,774 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:18,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:20:18,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:20:18,974 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:18,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1028794239, now seen corresponding path program 27 times [2024-11-13 16:20:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531880352] [2024-11-13 16:20:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:18,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531880352] [2024-11-13 16:20:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531880352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247831675] [2024-11-13 16:20:19,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:20:19,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:19,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:19,355 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:19,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 16:20:19,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 16:20:19,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:19,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:20:19,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:19,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:20:20,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247831675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:20,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:20,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-13 16:20:20,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582156314] [2024-11-13 16:20:20,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:20,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 16:20:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 16:20:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 16:20:20,088 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:20:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:20,376 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2024-11-13 16:20:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:20:20,376 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 42 [2024-11-13 16:20:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:20,377 INFO L225 Difference]: With dead ends: 90 [2024-11-13 16:20:20,377 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 16:20:20,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 50 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 16:20:20,378 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:20,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:20:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 16:20:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-11-13 16:20:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 0 states have call successors, (0), 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 16:20:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-11-13 16:20:20,402 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 42 [2024-11-13 16:20:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:20,402 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-11-13 16:20:20,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:20:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-11-13 16:20:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:20:20,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:20,402 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:20,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 16:20:20,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 16:20:20,603 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 296012566, now seen corresponding path program 28 times [2024-11-13 16:20:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:20,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761803623] [2024-11-13 16:20:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:20,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761803623] [2024-11-13 16:20:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761803623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657735003] [2024-11-13 16:20:20,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:20:20,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:20,958 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:20,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:20:21,066 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:20:21,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:21,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:20:21,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:21,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657735003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:21,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-13 16:20:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4360282] [2024-11-13 16:20:21,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:21,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 16:20:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 16:20:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 16:20:21,541 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:20:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:21,893 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2024-11-13 16:20:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 16:20:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 43 [2024-11-13 16:20:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:21,894 INFO L225 Difference]: With dead ends: 49 [2024-11-13 16:20:21,894 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:20:21,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 52 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=583, Invalid=1967, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:20:21,895 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:21,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:20:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-13 16:20:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-11-13 16:20:21,922 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 43 [2024-11-13 16:20:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:21,922 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-11-13 16:20:21,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.631578947368421) internal successors, (62), 38 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:20:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-11-13 16:20:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 16:20:21,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:21,923 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:21,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 16:20:22,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:22,123 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:22,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash 588120351, now seen corresponding path program 29 times [2024-11-13 16:20:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:22,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590803585] [2024-11-13 16:20:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:22,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:27,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:27,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590803585] [2024-11-13 16:20:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590803585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:27,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153968536] [2024-11-13 16:20:27,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:20:27,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:27,714 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:27,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:20:28,036 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 16:20:28,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:28,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-13 16:20:28,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:28,479 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 16:20:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:30,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153968536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:34,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 27] total 95 [2024-11-13 16:20:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841854030] [2024-11-13 16:20:34,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:34,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-13 16:20:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-13 16:20:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8583, Unknown=0, NotChecked=0, Total=8930 [2024-11-13 16:20:34,325 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 95 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 16:20:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:38,754 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2024-11-13 16:20:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 16:20:38,754 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 95 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) Word has length 44 [2024-11-13 16:20:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:38,755 INFO L225 Difference]: With dead ends: 63 [2024-11-13 16:20:38,755 INFO L226 Difference]: Without dead ends: 59 [2024-11-13 16:20:38,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2858 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=533, Invalid=13039, Unknown=0, NotChecked=0, Total=13572 [2024-11-13 16:20:38,756 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:38,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 169 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:20:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-13 16:20:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2024-11-13 16:20:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-11-13 16:20:38,782 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 44 [2024-11-13 16:20:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:38,782 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-13 16:20:38,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 95 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 16:20:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-11-13 16:20:38,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 16:20:38,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:38,783 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:38,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:20:38,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:38,984 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:38,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1053527094, now seen corresponding path program 30 times [2024-11-13 16:20:38,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:38,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825725321] [2024-11-13 16:20:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825725321] [2024-11-13 16:20:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825725321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543176544] [2024-11-13 16:20:39,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:20:39,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:39,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:39,427 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:39,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:20:39,810 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 16:20:39,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:39,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 16:20:39,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:40,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 16:20:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543176544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:40,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-13 16:20:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285892632] [2024-11-13 16:20:40,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:40,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:20:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:20:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:20:40,404 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 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 16:20:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:40,730 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2024-11-13 16:20:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:20:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-13 16:20:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:40,732 INFO L225 Difference]: With dead ends: 96 [2024-11-13 16:20:40,732 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 16:20:40,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 53 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=648, Invalid=2004, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:20:40,732 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:40,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 16:20:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-13 16:20:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 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 16:20:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-11-13 16:20:40,763 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 45 [2024-11-13 16:20:40,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:40,763 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-11-13 16:20:40,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 41 states have internal predecessors, (66), 0 states have call successors, (0), 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 16:20:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-11-13 16:20:40,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 16:20:40,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:40,764 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:40,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:40,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 16:20:40,964 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:40,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 997850431, now seen corresponding path program 31 times [2024-11-13 16:20:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045642388] [2024-11-13 16:20:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:20:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045642388] [2024-11-13 16:20:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045642388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204480978] [2024-11-13 16:20:41,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:20:41,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:41,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:41,405 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:41,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:20:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:41,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 16:20:41,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:20:41,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:20:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204480978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:42,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-13 16:20:42,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025534260] [2024-11-13 16:20:42,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:42,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:20:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:20:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:20:42,097 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 16:20:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:42,447 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-11-13 16:20:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 16:20:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 46 [2024-11-13 16:20:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:42,448 INFO L225 Difference]: With dead ends: 52 [2024-11-13 16:20:42,448 INFO L226 Difference]: Without dead ends: 48 [2024-11-13 16:20:42,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 54 SyntacticMatches, 24 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=676, Invalid=2294, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 16:20:42,449 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:42,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:20:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-13 16:20:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-13 16:20:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 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 16:20:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-13 16:20:42,479 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 46 [2024-11-13 16:20:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:42,479 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-13 16:20:42,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 16:20:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-13 16:20:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 16:20:42,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:42,480 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:42,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:20:42,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:20:42,681 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:42,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 870257686, now seen corresponding path program 32 times [2024-11-13 16:20:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682019831] [2024-11-13 16:20:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:20:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 36 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682019831] [2024-11-13 16:20:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682019831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:47,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665124858] [2024-11-13 16:20:47,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:47,946 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:20:48,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:48,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:48,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-13 16:20:48,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:48,686 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 16:20:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:20:51,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:20:54,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665124858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:54,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:54,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 29] total 103 [2024-11-13 16:20:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438666029] [2024-11-13 16:20:54,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:54,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-13 16:20:54,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-13 16:20:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=10006, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 16:20:54,948 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 103 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 0 states have call successors, (0), 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 16:21:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:01,048 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2024-11-13 16:21:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 16:21:01,048 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-13 16:21:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:01,049 INFO L225 Difference]: With dead ends: 68 [2024-11-13 16:21:01,049 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 16:21:01,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=907, Invalid=17999, Unknown=0, NotChecked=0, Total=18906 [2024-11-13 16:21:01,050 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:01,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 165 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 16:21:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 16:21:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2024-11-13 16:21:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 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 16:21:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-11-13 16:21:01,081 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 47 [2024-11-13 16:21:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:01,082 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-11-13 16:21:01,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 103 states have internal predecessors, (117), 0 states have call successors, (0), 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 16:21:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-11-13 16:21:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 16:21:01,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:01,082 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:01,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:21:01,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:01,283 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:01,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1209849887, now seen corresponding path program 33 times [2024-11-13 16:21:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:01,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792958212] [2024-11-13 16:21:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:01,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 79 proven. 90 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:21:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792958212] [2024-11-13 16:21:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792958212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691706761] [2024-11-13 16:21:01,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:21:01,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:01,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:01,726 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:01,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 16:21:01,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-13 16:21:01,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:01,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 16:21:01,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:21:02,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 16:21:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691706761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:02,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-13 16:21:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381981090] [2024-11-13 16:21:02,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:02,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 16:21:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:02,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 16:21:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:21:02,662 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:21:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:03,009 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2024-11-13 16:21:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 16:21:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-13 16:21:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:03,010 INFO L225 Difference]: With dead ends: 102 [2024-11-13 16:21:03,010 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 16:21:03,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 56 SyntacticMatches, 25 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=747, Invalid=2333, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:21:03,011 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:03,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:21:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 16:21:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-11-13 16:21:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 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 16:21:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-13 16:21:03,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 48 [2024-11-13 16:21:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:03,045 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-13 16:21:03,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:21:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-13 16:21:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 16:21:03,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:03,046 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:03,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 16:21:03,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:03,247 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:03,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1419218550, now seen corresponding path program 34 times [2024-11-13 16:21:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680212245] [2024-11-13 16:21:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 66 proven. 103 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680212245] [2024-11-13 16:21:03,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680212245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309414030] [2024-11-13 16:21:03,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:21:03,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:03,679 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:03,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:21:03,807 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:21:03,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:03,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 16:21:03,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:04,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:04,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309414030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:04,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:04,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-13 16:21:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933227416] [2024-11-13 16:21:04,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:04,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 16:21:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 16:21:04,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:21:04,425 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:21:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:04,844 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2024-11-13 16:21:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:21:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:21:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:04,846 INFO L225 Difference]: With dead ends: 55 [2024-11-13 16:21:04,846 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 16:21:04,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 58 SyntacticMatches, 26 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=776, Invalid=2646, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 16:21:04,846 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:04,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:21:04,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 16:21:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-13 16:21:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 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 16:21:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-13 16:21:04,876 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 49 [2024-11-13 16:21:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:04,876 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-13 16:21:04,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:21:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-13 16:21:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 16:21:04,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:04,877 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:04,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:21:05,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 16:21:05,077 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:05,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1047767487, now seen corresponding path program 35 times [2024-11-13 16:21:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:05,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142955128] [2024-11-13 16:21:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 1 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142955128] [2024-11-13 16:21:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142955128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588583663] [2024-11-13 16:21:12,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:21:12,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:12,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:12,303 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:12,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 16:21:12,700 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 16:21:12,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:12,704 WARN L253 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-13 16:21:12,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:12,807 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 16:21:12,874 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 16:21:12,936 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 16:21:12,999 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 16:21:13,060 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 16:21:13,122 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 16:21:13,184 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 16:21:13,246 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 16:21:13,309 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 16:21:13,370 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 16:21:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:16,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:21,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588583663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:21,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:21,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 31] total 111 [2024-11-13 16:21:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859364764] [2024-11-13 16:21:21,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:21,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-13 16:21:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:21,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-13 16:21:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=11781, Unknown=0, NotChecked=0, Total=12210 [2024-11-13 16:21:21,162 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 111 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 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 16:21:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:27,170 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2024-11-13 16:21:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 16:21:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 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 16:21:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:27,171 INFO L225 Difference]: With dead ends: 72 [2024-11-13 16:21:27,171 INFO L226 Difference]: Without dead ends: 68 [2024-11-13 16:21:27,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4108 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=646, Invalid=16646, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 16:21:27,172 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:27,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 179 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 16:21:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-13 16:21:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2024-11-13 16:21:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-13 16:21:27,210 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 50 [2024-11-13 16:21:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:27,211 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-13 16:21:27,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 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 16:21:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-13 16:21:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 16:21:27,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:27,211 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:27,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 16:21:27,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:27,412 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:27,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1877280874, now seen corresponding path program 36 times [2024-11-13 16:21:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037071366] [2024-11-13 16:21:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037071366] [2024-11-13 16:21:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037071366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016326365] [2024-11-13 16:21:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:21:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:27,984 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:27,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 16:21:28,500 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 16:21:28,500 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:28,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 16:21:28,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:28,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 16:21:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016326365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:29,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:29,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-13 16:21:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571108721] [2024-11-13 16:21:29,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:29,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 16:21:29,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 16:21:29,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:21:29,261 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 47 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 0 states have call successors, (0), 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 16:21:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:29,710 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2024-11-13 16:21:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 16:21:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 0 states have call successors, (0), 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 16:21:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:29,710 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:21:29,711 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 16:21:29,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 59 SyntacticMatches, 27 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=853, Invalid=2687, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:21:29,711 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:29,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:21:29,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 16:21:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-11-13 16:21:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 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 16:21:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2024-11-13 16:21:29,746 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 51 [2024-11-13 16:21:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:29,746 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2024-11-13 16:21:29,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 0 states have call successors, (0), 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 16:21:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-11-13 16:21:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 16:21:29,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:29,747 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:29,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 16:21:29,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 16:21:29,947 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:29,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash 546528735, now seen corresponding path program 37 times [2024-11-13 16:21:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207690605] [2024-11-13 16:21:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 78 proven. 118 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207690605] [2024-11-13 16:21:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207690605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209011031] [2024-11-13 16:21:30,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:21:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:30,459 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 16:21:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:30,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 16:21:30,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:30,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209011031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:31,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:31,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-13 16:21:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067358406] [2024-11-13 16:21:31,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:31,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 16:21:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 16:21:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:21:31,362 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 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 16:21:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:31,779 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-13 16:21:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 16:21:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 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 52 [2024-11-13 16:21:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:31,780 INFO L225 Difference]: With dead ends: 58 [2024-11-13 16:21:31,780 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 16:21:31,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 60 SyntacticMatches, 28 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=883, Invalid=3023, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 16:21:31,781 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:31,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:21:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 16:21:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-13 16:21:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 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 16:21:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-13 16:21:31,825 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 52 [2024-11-13 16:21:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:31,826 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-13 16:21:31,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 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 16:21:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-13 16:21:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 16:21:31,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:31,826 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:31,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 16:21:32,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:32,027 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:32,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:32,027 INFO L85 PathProgramCache]: Analyzing trace with hash -235813002, now seen corresponding path program 38 times [2024-11-13 16:21:32,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:32,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423376711] [2024-11-13 16:21:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:32,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:37,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423376711] [2024-11-13 16:21:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423376711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:37,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955573922] [2024-11-13 16:21:37,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:21:37,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:37,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:37,011 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:37,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:21:37,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:21:37,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:37,188 WARN L253 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-13 16:21:37,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:37,267 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 16:21:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:40,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955573922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:46,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 47, 33] total 108 [2024-11-13 16:21:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349614683] [2024-11-13 16:21:46,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:46,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-13 16:21:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-13 16:21:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=11139, Unknown=0, NotChecked=0, Total=11556 [2024-11-13 16:21:46,909 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 108 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:52,003 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2024-11-13 16:21:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:21:52,003 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-13 16:21:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:52,004 INFO L225 Difference]: With dead ends: 75 [2024-11-13 16:21:52,004 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 16:21:52,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2619 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=599, Invalid=14901, Unknown=0, NotChecked=0, Total=15500 [2024-11-13 16:21:52,005 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:52,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 181 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 16:21:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 16:21:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2024-11-13 16:21:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 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 16:21:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-13 16:21:52,059 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 53 [2024-11-13 16:21:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:52,059 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-13 16:21:52,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-13 16:21:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 16:21:52,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:52,060 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:52,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 16:21:52,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 16:21:52,260 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:52,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:52,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1281396927, now seen corresponding path program 39 times [2024-11-13 16:21:52,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:52,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498031879] [2024-11-13 16:21:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 106 proven. 119 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:52,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:52,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498031879] [2024-11-13 16:21:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498031879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:52,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221943775] [2024-11-13 16:21:52,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:21:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:52,785 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:52,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 16:21:53,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 16:21:53,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:53,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:21:53,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:53,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-13 16:21:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221943775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:53,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-13 16:21:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279714371] [2024-11-13 16:21:53,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:53,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:21:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:21:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:21:53,951 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 50 states, 50 states have (on average 1.22) internal successors, (61), 50 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 16:21:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:54,448 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2024-11-13 16:21:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:21:54,448 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.22) internal successors, (61), 50 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 54 [2024-11-13 16:21:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:54,449 INFO L225 Difference]: With dead ends: 114 [2024-11-13 16:21:54,449 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 16:21:54,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 62 SyntacticMatches, 29 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=966, Invalid=3066, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:21:54,450 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:54,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:21:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 16:21:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2024-11-13 16:21:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 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 16:21:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-13 16:21:54,498 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 54 [2024-11-13 16:21:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:54,498 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-13 16:21:54,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.22) internal successors, (61), 50 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 16:21:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-13 16:21:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:21:54,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:54,499 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:54,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 16:21:54,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-13 16:21:54,699 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:54,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1392358954, now seen corresponding path program 40 times [2024-11-13 16:21:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080379047] [2024-11-13 16:21:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 91 proven. 134 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:21:55,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:55,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080379047] [2024-11-13 16:21:55,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080379047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:55,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293002969] [2024-11-13 16:21:55,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:21:55,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:55,249 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:55,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 16:21:55,404 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:21:55,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:55,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 16:21:55,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:21:55,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:21:56,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293002969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:56,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:56,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-13 16:21:56,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525760132] [2024-11-13 16:21:56,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:56,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:21:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:21:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:21:56,179 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 50 states, 50 states have (on average 1.56) internal successors, (78), 50 states have internal predecessors, (78), 0 states have call successors, (0), 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 16:21:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:21:56,676 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-11-13 16:21:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 16:21:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.56) internal successors, (78), 50 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 16:21:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:21:56,677 INFO L225 Difference]: With dead ends: 61 [2024-11-13 16:21:56,677 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 16:21:56,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 64 SyntacticMatches, 30 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=997, Invalid=3425, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 16:21:56,678 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:21:56,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:21:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 16:21:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-13 16:21:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-13 16:21:56,720 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 55 [2024-11-13 16:21:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:21:56,720 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-13 16:21:56,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.56) internal successors, (78), 50 states have internal predecessors, (78), 0 states have call successors, (0), 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 16:21:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-13 16:21:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 16:21:56,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:21:56,721 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:56,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 16:21:56,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-13 16:21:56,922 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:21:56,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash -211789217, now seen corresponding path program 41 times [2024-11-13 16:21:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:56,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957231556] [2024-11-13 16:21:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957231556] [2024-11-13 16:22:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957231556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345475870] [2024-11-13 16:22:02,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:22:02,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:02,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:02,074 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:02,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 16:22:02,636 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-13 16:22:02,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:02,641 WARN L253 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 159 conjuncts are in the unsatisfiable core [2024-11-13 16:22:02,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:02,717 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 16:22:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:06,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:22:13,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345475870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:13,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:13,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 50, 35] total 115 [2024-11-13 16:22:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172071112] [2024-11-13 16:22:13,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:13,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-13 16:22:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-13 16:22:13,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=12659, Unknown=0, NotChecked=0, Total=13110 [2024-11-13 16:22:13,912 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 115 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:19,910 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2024-11-13 16:22:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:22:19,910 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 16:22:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:19,911 INFO L225 Difference]: With dead ends: 79 [2024-11-13 16:22:19,911 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 16:22:19,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=657, Invalid=17165, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 16:22:19,913 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:19,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 190 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-13 16:22:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 16:22:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2024-11-13 16:22:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 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 16:22:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-13 16:22:19,969 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 56 [2024-11-13 16:22:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:19,969 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-13 16:22:19,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-13 16:22:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 16:22:19,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:19,970 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:19,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 16:22:20,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:20,170 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:20,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2026134262, now seen corresponding path program 42 times [2024-11-13 16:22:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:20,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118975320] [2024-11-13 16:22:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 121 proven. 135 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:22:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118975320] [2024-11-13 16:22:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118975320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827307061] [2024-11-13 16:22:20,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:22:20,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:20,743 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:20,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 16:22:21,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 16:22:21,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:21,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 16:22:21,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:22:21,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 16:22:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827307061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:22,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-13 16:22:22,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988257392] [2024-11-13 16:22:22,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:22,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 16:22:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 16:22:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 16:22:22,146 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:22:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:22,681 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2024-11-13 16:22:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 16:22:22,681 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-13 16:22:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:22,682 INFO L225 Difference]: With dead ends: 120 [2024-11-13 16:22:22,682 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 16:22:22,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 65 SyntacticMatches, 31 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1086, Invalid=3470, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:22:22,683 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:22,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:22:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 16:22:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-13 16:22:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 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 16:22:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-11-13 16:22:22,749 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 57 [2024-11-13 16:22:22,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:22,749 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-11-13 16:22:22,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:22:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-11-13 16:22:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 16:22:22,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:22,749 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:22,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 16:22:22,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:22,950 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:22,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:22,950 INFO L85 PathProgramCache]: Analyzing trace with hash 442615423, now seen corresponding path program 43 times [2024-11-13 16:22:22,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:22,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41708653] [2024-11-13 16:22:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:22,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 105 proven. 151 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41708653] [2024-11-13 16:22:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41708653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689460809] [2024-11-13 16:22:23,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:22:23,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:23,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:23,550 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:23,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 16:22:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:23,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 16:22:23,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 120 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:24,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 120 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689460809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:24,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-13 16:22:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125825064] [2024-11-13 16:22:24,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:24,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 16:22:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 16:22:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 16:22:24,608 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:22:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:25,135 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-11-13 16:22:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 16:22:25,136 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-13 16:22:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:25,137 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:22:25,137 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 16:22:25,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 66 SyntacticMatches, 32 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2510 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1118, Invalid=3852, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 16:22:25,138 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:25,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:22:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 16:22:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-13 16:22:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 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 16:22:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-13 16:22:25,190 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 58 [2024-11-13 16:22:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:25,190 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-13 16:22:25,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:22:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-13 16:22:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 16:22:25,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:25,191 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:25,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 16:22:25,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:25,391 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:25,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash 837841622, now seen corresponding path program 44 times [2024-11-13 16:22:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685734701] [2024-11-13 16:22:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:30,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685734701] [2024-11-13 16:22:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685734701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255411282] [2024-11-13 16:22:30,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:22:30,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:30,994 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:30,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 16:22:31,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:22:31,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:31,176 WARN L253 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-11-13 16:22:31,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:31,277 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 16:22:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:35,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:44,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255411282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:44,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:44,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 53, 37] total 122 [2024-11-13 16:22:44,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110064919] [2024-11-13 16:22:44,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:44,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-13 16:22:44,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-13 16:22:44,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=14276, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 16:22:44,403 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 122 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 122 states have internal predecessors, (136), 0 states have call successors, (0), 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 16:22:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:51,823 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2024-11-13 16:22:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 16:22:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 122 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-13 16:22:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:51,824 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:22:51,824 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 16:22:51,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=717, Invalid=19589, Unknown=0, NotChecked=0, Total=20306 [2024-11-13 16:22:51,825 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:51,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 259 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 4719 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 16:22:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 16:22:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2024-11-13 16:22:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 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 16:22:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-13 16:22:51,894 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 59 [2024-11-13 16:22:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:51,894 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-13 16:22:51,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 122 states have internal predecessors, (136), 0 states have call successors, (0), 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 16:22:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-13 16:22:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 16:22:51,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:51,894 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:51,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:52,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-13 16:22:52,095 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 204951903, now seen corresponding path program 45 times [2024-11-13 16:22:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363216251] [2024-11-13 16:22:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 137 proven. 152 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363216251] [2024-11-13 16:22:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363216251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214856842] [2024-11-13 16:22:52,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:22:52,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:52,836 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:52,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 16:22:53,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 16:22:53,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:53,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 16:22:53,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:53,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:22:54,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214856842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:54,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:54,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-11-13 16:22:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862925276] [2024-11-13 16:22:54,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:54,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:22:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:22:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:22:54,345 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 16:22:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:54,919 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2024-11-13 16:22:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:22:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 60 [2024-11-13 16:22:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:54,920 INFO L225 Difference]: With dead ends: 126 [2024-11-13 16:22:54,920 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 16:22:54,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 68 SyntacticMatches, 33 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2379 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1213, Invalid=3899, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 16:22:54,921 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:54,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:22:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 16:22:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2024-11-13 16:22:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 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 16:22:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2024-11-13 16:22:54,989 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 60 [2024-11-13 16:22:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:54,989 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2024-11-13 16:22:54,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 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 16:22:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2024-11-13 16:22:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 16:22:54,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:54,989 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:55,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 16:22:55,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-13 16:22:55,190 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:55,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1811219146, now seen corresponding path program 46 times [2024-11-13 16:22:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416109590] [2024-11-13 16:22:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 120 proven. 169 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:22:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416109590] [2024-11-13 16:22:55,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416109590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201951424] [2024-11-13 16:22:55,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:22:55,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:55,912 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:55,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 16:22:56,095 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:22:56,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:56,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 16:22:56,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 136 proven. 153 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:22:56,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 136 proven. 153 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:22:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201951424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:57,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-11-13 16:22:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808399748] [2024-11-13 16:22:57,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:57,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:22:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:22:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:22:57,063 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 56 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 56 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:22:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:57,702 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2024-11-13 16:22:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 16:22:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 56 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-13 16:22:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:57,703 INFO L225 Difference]: With dead ends: 67 [2024-11-13 16:22:57,703 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 16:22:57,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 70 SyntacticMatches, 34 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2821 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1246, Invalid=4304, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 16:22:57,705 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:57,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:22:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 16:22:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-13 16:22:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 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 16:22:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-13 16:22:57,785 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 61 [2024-11-13 16:22:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:57,785 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-13 16:22:57,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 56 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:22:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-13 16:22:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 16:22:57,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:57,786 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:57,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 16:22:57,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-13 16:22:57,986 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:57,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -311553281, now seen corresponding path program 47 times [2024-11-13 16:22:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008994490] [2024-11-13 16:22:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 28 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008994490] [2024-11-13 16:23:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008994490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283024798] [2024-11-13 16:23:10,973 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:23:10,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:10,975 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:10,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 16:23:11,784 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 16:23:11,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:11,791 WARN L253 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-11-13 16:23:11,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:12,493 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 16:23:12,582 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 16:23:12,666 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 16:23:12,754 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 16:23:12,844 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 16:23:12,933 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 16:23:13,022 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 16:23:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:17,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:23:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283024798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:27,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 39] total 144 [2024-11-13 16:23:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053151648] [2024-11-13 16:23:27,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:27,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2024-11-13 16:23:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2024-11-13 16:23:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=19909, Unknown=0, NotChecked=0, Total=20592 [2024-11-13 16:23:27,218 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 144 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 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 16:23:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:38,801 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-11-13 16:23:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 16:23:38,801 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 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 16:23:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:38,802 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:23:38,802 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 16:23:38,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8456 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=1134, Invalid=30728, Unknown=0, NotChecked=0, Total=31862 [2024-11-13 16:23:38,803 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:38,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 198 Invalid, 4180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 16:23:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 16:23:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2024-11-13 16:23:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 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 16:23:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-11-13 16:23:38,881 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 62 [2024-11-13 16:23:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:38,881 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-11-13 16:23:38,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 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 16:23:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-11-13 16:23:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:23:38,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:38,882 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:38,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 16:23:39,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 16:23:39,082 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:23:39,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1066551722, now seen corresponding path program 48 times [2024-11-13 16:23:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529842302] [2024-11-13 16:23:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 154 proven. 170 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:23:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529842302] [2024-11-13 16:23:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529842302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852042212] [2024-11-13 16:23:39,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:23:39,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:39,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:39,774 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:39,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 16:23:41,093 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-13 16:23:41,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:41,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 16:23:41,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 188 proven. 153 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 16:23:41,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 171 proven. 153 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-13 16:23:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852042212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:42,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40, 39] total 78 [2024-11-13 16:23:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519006016] [2024-11-13 16:23:42,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:42,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-13 16:23:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-13 16:23:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1543, Invalid=4463, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 16:23:42,758 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 78 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 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 16:23:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:43,730 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2024-11-13 16:23:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:23:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 16:23:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:43,731 INFO L225 Difference]: With dead ends: 132 [2024-11-13 16:23:43,731 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 16:23:43,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 87 SyntacticMatches, 17 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4955 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3113, Invalid=9543, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 16:23:43,732 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:43,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 49 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:23:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 16:23:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-13 16:23:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 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 16:23:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-13 16:23:43,791 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 63 [2024-11-13 16:23:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:43,791 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-13 16:23:43,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 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 16:23:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-13 16:23:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 16:23:43,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:43,792 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:43,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-13 16:23:43,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 16:23:43,992 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:23:43,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash 234829599, now seen corresponding path program 49 times [2024-11-13 16:23:43,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:43,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179329667] [2024-11-13 16:23:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 136 proven. 188 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:23:44,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179329667] [2024-11-13 16:23:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179329667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449574527] [2024-11-13 16:23:44,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:23:44,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:44,770 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:44,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 16:23:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:44,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 16:23:44,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 153 proven. 171 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:23:45,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 153 proven. 171 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:23:46,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449574527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:46,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:46,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-13 16:23:46,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946554512] [2024-11-13 16:23:46,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:46,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-13 16:23:46,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-13 16:23:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 16:23:46,054 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 59 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:23:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:46,712 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-13 16:23:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 16:23:46,712 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 16:23:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:46,713 INFO L225 Difference]: With dead ends: 70 [2024-11-13 16:23:46,713 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 16:23:46,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 72 SyntacticMatches, 36 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3150 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1381, Invalid=4781, Unknown=0, NotChecked=0, Total=6162 [2024-11-13 16:23:46,714 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:46,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:23:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 16:23:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-13 16:23:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:23:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-13 16:23:46,777 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 64 [2024-11-13 16:23:46,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:46,777 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-13 16:23:46,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:23:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-13 16:23:46,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 16:23:46,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:46,778 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:46,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-13 16:23:46,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:46,978 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:23:46,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:46,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1308551626, now seen corresponding path program 50 times [2024-11-13 16:23:46,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:46,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441374533] [2024-11-13 16:23:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:46,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 120 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441374533] [2024-11-13 16:24:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441374533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620549972] [2024-11-13 16:24:00,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:24:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:00,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:00,222 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:00,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 16:24:00,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:24:00,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:00,440 WARN L253 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 189 conjuncts are in the unsatisfiable core [2024-11-13 16:24:00,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:01,789 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 16:24:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:07,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:24:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620549972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:16,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 59, 41] total 152 [2024-11-13 16:24:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307956825] [2024-11-13 16:24:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2024-11-13 16:24:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2024-11-13 16:24:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1111, Invalid=21841, Unknown=0, NotChecked=0, Total=22952 [2024-11-13 16:24:16,100 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 152 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 152 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 16:24:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:29,209 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2024-11-13 16:24:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 16:24:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 152 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) Word has length 65 [2024-11-13 16:24:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:29,210 INFO L225 Difference]: With dead ends: 92 [2024-11-13 16:24:29,210 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:24:29,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11546 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=1896, Invalid=36716, Unknown=0, NotChecked=0, Total=38612 [2024-11-13 16:24:29,211 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 4645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:29,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 206 Invalid, 4645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-13 16:24:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:24:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2024-11-13 16:24:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 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 16:24:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-13 16:24:29,282 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 65 [2024-11-13 16:24:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:29,282 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-13 16:24:29,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 152 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 16:24:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-13 16:24:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 16:24:29,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:29,283 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:29,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 16:24:29,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:29,483 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:29,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1908729345, now seen corresponding path program 51 times [2024-11-13 16:24:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257112232] [2024-11-13 16:24:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 172 proven. 189 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:24:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257112232] [2024-11-13 16:24:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257112232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337711869] [2024-11-13 16:24:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:24:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:30,306 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:30,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-13 16:24:30,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 16:24:30,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:30,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:24:30,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:24:31,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 190 proven. 171 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:24:32,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337711869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:32,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:32,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-11-13 16:24:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469247320] [2024-11-13 16:24:32,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:32,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:24:32,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:24:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:24:32,169 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 62 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:32,839 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2024-11-13 16:24:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:24:32,840 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-13 16:24:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:32,841 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:24:32,841 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 16:24:32,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 74 SyntacticMatches, 37 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2946 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1488, Invalid=4832, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:24:32,842 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:32,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:24:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 16:24:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2024-11-13 16:24:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.044776119402985) internal successors, (70), 67 states have internal predecessors, (70), 0 states have call successors, (0), 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 16:24:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-11-13 16:24:32,916 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 66 [2024-11-13 16:24:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:32,916 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-11-13 16:24:32,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-11-13 16:24:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 16:24:32,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:32,917 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:32,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-13 16:24:33,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:33,117 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:33,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash -833116010, now seen corresponding path program 52 times [2024-11-13 16:24:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:33,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436201353] [2024-11-13 16:24:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:33,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 153 proven. 208 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:24:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:33,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436201353] [2024-11-13 16:24:33,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436201353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:33,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60929622] [2024-11-13 16:24:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:24:33,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:33,917 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:33,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-13 16:24:34,126 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:24:34,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:34,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:24:34,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 171 proven. 190 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:24:34,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 171 proven. 190 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:24:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60929622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:35,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-11-13 16:24:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269288930] [2024-11-13 16:24:35,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:35,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:24:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:24:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:24:35,265 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 62 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 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 16:24:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:35,897 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2024-11-13 16:24:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 16:24:35,897 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 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 67 [2024-11-13 16:24:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:35,898 INFO L225 Difference]: With dead ends: 73 [2024-11-13 16:24:35,898 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 16:24:35,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 76 SyntacticMatches, 38 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3497 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1523, Invalid=5283, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 16:24:35,899 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:35,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:24:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 16:24:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-13 16:24:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 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 16:24:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-13 16:24:35,974 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 67 [2024-11-13 16:24:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:35,974 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-13 16:24:35,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 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 16:24:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-13 16:24:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:24:35,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:35,975 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:36,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-13 16:24:36,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 16:24:36,175 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash -55127137, now seen corresponding path program 53 times [2024-11-13 16:24:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126659407] [2024-11-13 16:24:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 136 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126659407] [2024-11-13 16:24:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126659407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102766718] [2024-11-13 16:24:50,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:24:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:50,887 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:50,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 16:24:54,093 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-13 16:24:54,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:54,102 WARN L253 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 245 conjuncts are in the unsatisfiable core [2024-11-13 16:24:54,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:54,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:24:54,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:24:54,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:24:54,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:24:54,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 16:24:54,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:54,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:24:54,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:54,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:24:54,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:54,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:24:54,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:54,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-13 16:24:55,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 16:24:55,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:55,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:55,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:24:56,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:56,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 16:24:56,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:56,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-13 16:25:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:03,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:25:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102766718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:15,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 43] total 162 [2024-11-13 16:25:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258807483] [2024-11-13 16:25:15,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:15,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2024-11-13 16:25:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:15,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2024-11-13 16:25:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1194, Invalid=24888, Unknown=0, NotChecked=0, Total=26082 [2024-11-13 16:25:15,122 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 162 states, 162 states have (on average 1.0802469135802468) internal successors, (175), 162 states have internal predecessors, (175), 0 states have call successors, (0), 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 16:25:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:33,271 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-11-13 16:25:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-13 16:25:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 1.0802469135802468) internal successors, (175), 162 states have internal predecessors, (175), 0 states have call successors, (0), 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 68 [2024-11-13 16:25:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:33,272 INFO L225 Difference]: With dead ends: 96 [2024-11-13 16:25:33,272 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 16:25:33,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13852 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=2124, Invalid=46496, Unknown=0, NotChecked=0, Total=48620 [2024-11-13 16:25:33,274 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 5358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:33,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 226 Invalid, 5358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 16:25:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 16:25:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 72. [2024-11-13 16:25:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 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 16:25:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-13 16:25:33,358 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 68 [2024-11-13 16:25:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:33,358 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-13 16:25:33,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 1.0802469135802468) internal successors, (175), 162 states have internal predecessors, (175), 0 states have call successors, (0), 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 16:25:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-13 16:25:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-13 16:25:33,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:33,359 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:33,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 16:25:33,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-13 16:25:33,560 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:25:33,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1707275850, now seen corresponding path program 54 times [2024-11-13 16:25:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:33,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848202597] [2024-11-13 16:25:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:33,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 191 proven. 209 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:25:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848202597] [2024-11-13 16:25:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848202597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854223962] [2024-11-13 16:25:34,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:25:34,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:34,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:34,419 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:34,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-13 16:25:35,416 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-13 16:25:35,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:25:35,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:25:35,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:25:36,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 210 proven. 190 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:25:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854223962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:36,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-13 16:25:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679510701] [2024-11-13 16:25:36,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:36,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 16:25:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 16:25:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 16:25:36,882 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 16:25:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:37,610 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2024-11-13 16:25:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 16:25:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 69 [2024-11-13 16:25:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:37,611 INFO L225 Difference]: With dead ends: 144 [2024-11-13 16:25:37,611 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 16:25:37,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 77 SyntacticMatches, 39 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1636, Invalid=5336, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 16:25:37,612 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:37,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:25:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 16:25:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2024-11-13 16:25:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:25:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2024-11-13 16:25:37,734 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 69 [2024-11-13 16:25:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:37,734 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2024-11-13 16:25:37,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 16:25:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2024-11-13 16:25:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 16:25:37,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:37,735 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:37,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-13 16:25:37,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-13 16:25:37,935 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:25:37,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash -452612161, now seen corresponding path program 55 times [2024-11-13 16:25:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:37,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744944291] [2024-11-13 16:25:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 171 proven. 229 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:25:38,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744944291] [2024-11-13 16:25:38,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744944291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948226741] [2024-11-13 16:25:38,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:25:38,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:38,809 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-13 16:25:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:39,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:25:39,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 190 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:25:39,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 190 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:25:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948226741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:40,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-13 16:25:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77995571] [2024-11-13 16:25:40,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:40,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 16:25:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 16:25:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 16:25:40,410 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 16:25:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:41,116 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-11-13 16:25:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 16:25:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 70 [2024-11-13 16:25:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:41,118 INFO L225 Difference]: With dead ends: 76 [2024-11-13 16:25:41,118 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 16:25:41,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 78 SyntacticMatches, 40 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3862 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1672, Invalid=5810, Unknown=0, NotChecked=0, Total=7482 [2024-11-13 16:25:41,118 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:41,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:25:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 16:25:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 16:25:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 states have internal predecessors, (74), 0 states have call successors, (0), 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 16:25:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-11-13 16:25:41,195 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 70 [2024-11-13 16:25:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:41,195 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-11-13 16:25:41,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 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 16:25:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-11-13 16:25:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:25:41,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:41,196 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:41,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-13 16:25:41,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:41,396 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:25:41,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1144409706, now seen corresponding path program 56 times [2024-11-13 16:25:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906738293] [2024-11-13 16:25:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 55 proven. 575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:59,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906738293] [2024-11-13 16:25:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906738293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298957550] [2024-11-13 16:25:59,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:25:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:59,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:59,686 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:59,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 16:25:59,934 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:25:59,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:25:59,938 WARN L253 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 209 conjuncts are in the unsatisfiable core [2024-11-13 16:25:59,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:01,636 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 16:26:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:08,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:26:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298957550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:22,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 65, 45] total 168 [2024-11-13 16:26:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505127810] [2024-11-13 16:26:22,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:22,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2024-11-13 16:26:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2024-11-13 16:26:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=27145, Unknown=0, NotChecked=0, Total=28056 [2024-11-13 16:26:22,710 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 168 states, 168 states have (on average 1.0833333333333333) internal successors, (182), 168 states have internal predecessors, (182), 0 states have call successors, (0), 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 16:26:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:40,875 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2024-11-13 16:26:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 16:26:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.0833333333333333) internal successors, (182), 168 states have internal predecessors, (182), 0 states have call successors, (0), 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 16:26:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:40,876 INFO L225 Difference]: With dead ends: 100 [2024-11-13 16:26:40,876 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 16:26:40,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11963 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=1557, Invalid=43175, Unknown=0, NotChecked=0, Total=44732 [2024-11-13 16:26:40,877 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 6210 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 6231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:40,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 268 Invalid, 6231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 6210 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 16:26:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 16:26:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2024-11-13 16:26:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 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 16:26:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-13 16:26:40,980 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 71 [2024-11-13 16:26:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:40,980 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-13 16:26:40,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.0833333333333333) internal successors, (182), 168 states have internal predecessors, (182), 0 states have call successors, (0), 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 16:26:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-13 16:26:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 16:26:40,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:40,980 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:40,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-13 16:26:41,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-13 16:26:41,181 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:41,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:41,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1115297121, now seen corresponding path program 57 times [2024-11-13 16:26:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:41,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049011784] [2024-11-13 16:26:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 211 proven. 230 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:26:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:42,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049011784] [2024-11-13 16:26:42,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049011784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:42,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088107851] [2024-11-13 16:26:42,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:26:42,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:42,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:42,099 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:42,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-13 16:26:43,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-13 16:26:43,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:26:43,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 16:26:43,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 251 proven. 210 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:26:44,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 190 proven. 251 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 16:26:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088107851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:45,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46, 46] total 92 [2024-11-13 16:26:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521073399] [2024-11-13 16:26:45,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:45,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 16:26:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 16:26:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2058, Invalid=6314, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:26:45,799 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 92 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:26:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:47,153 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2024-11-13 16:26:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:26:47,153 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 16:26:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:47,154 INFO L225 Difference]: With dead ends: 150 [2024-11-13 16:26:47,154 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 16:26:47,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 96 SyntacticMatches, 20 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6982 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4242, Invalid=13580, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 16:26:47,155 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:47,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:26:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 16:26:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-13 16:26:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 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 16:26:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2024-11-13 16:26:47,240 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 72 [2024-11-13 16:26:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:47,240 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2024-11-13 16:26:47,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:26:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2024-11-13 16:26:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 16:26:47,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:47,241 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:47,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-13 16:26:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-13 16:26:47,441 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:47,442 INFO L85 PathProgramCache]: Analyzing trace with hash -871478282, now seen corresponding path program 58 times [2024-11-13 16:26:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051109152] [2024-11-13 16:26:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 190 proven. 251 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:26:48,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051109152] [2024-11-13 16:26:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051109152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844831230] [2024-11-13 16:26:48,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:26:48,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:48,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:48,387 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:48,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-13 16:26:48,635 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:26:48,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:26:48,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 16:26:48,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 210 proven. 231 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:26:49,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 210 proven. 231 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:26:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844831230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:50,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-11-13 16:26:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019231127] [2024-11-13 16:26:50,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:50,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 16:26:50,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 16:26:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:26:50,053 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 68 states, 68 states have (on average 1.5) internal successors, (102), 68 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:26:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:26:50,820 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-13 16:26:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 16:26:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5) internal successors, (102), 68 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:26:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:26:50,822 INFO L225 Difference]: With dead ends: 79 [2024-11-13 16:26:50,822 INFO L226 Difference]: Without dead ends: 75 [2024-11-13 16:26:50,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 82 SyntacticMatches, 42 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4245 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1828, Invalid=6362, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 16:26:50,823 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:26:50,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:26:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-13 16:26:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-13 16:26:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:26:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-11-13 16:26:50,917 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 73 [2024-11-13 16:26:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:26:50,917 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-11-13 16:26:50,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5) internal successors, (102), 68 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:26:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-11-13 16:26:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 16:26:50,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:26:50,917 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:50,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-13 16:26:51,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:51,118 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:26:51,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1244357569, now seen corresponding path program 59 times [2024-11-13 16:26:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800344572] [2024-11-13 16:26:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 111 proven. 582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:27:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800344572] [2024-11-13 16:27:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800344572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621140464] [2024-11-13 16:27:09,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:27:09,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:10,000 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:10,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-13 16:27:13,997 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-13 16:27:13,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:27:14,007 WARN L253 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 215 conjuncts are in the unsatisfiable core [2024-11-13 16:27:14,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:27:15,721 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 16:27:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 687 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:27:23,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:27:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:27:36,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621140464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:27:36,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:27:36,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 65, 47] total 173 [2024-11-13 16:27:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660780484] [2024-11-13 16:27:36,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:27:36,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-13 16:27:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:27:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-13 16:27:36,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1315, Invalid=28441, Unknown=0, NotChecked=0, Total=29756 [2024-11-13 16:27:36,909 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 173 states, 173 states have (on average 1.0867052023121386) internal successors, (188), 173 states have internal predecessors, (188), 0 states have call successors, (0), 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 16:27:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:27:58,416 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2024-11-13 16:27:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 16:27:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 1.0867052023121386) internal successors, (188), 173 states have internal predecessors, (188), 0 states have call successors, (0), 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 74 [2024-11-13 16:27:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:27:58,418 INFO L225 Difference]: With dead ends: 104 [2024-11-13 16:27:58,418 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 16:27:58,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14981 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=2372, Invalid=48930, Unknown=0, NotChecked=0, Total=51302 [2024-11-13 16:27:58,420 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 6120 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 6159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:27:58,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 6159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 6120 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-13 16:27:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 16:27:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2024-11-13 16:27:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:27:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2024-11-13 16:27:58,541 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 74 [2024-11-13 16:27:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:27:58,542 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2024-11-13 16:27:58,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 1.0867052023121386) internal successors, (188), 173 states have internal predecessors, (188), 0 states have call successors, (0), 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 16:27:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2024-11-13 16:27:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 16:27:58,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:27:58,542 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:27:58,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-13 16:27:58,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:58,743 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:27:58,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:27:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 81286422, now seen corresponding path program 60 times [2024-11-13 16:27:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:27:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719291544] [2024-11-13 16:27:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:27:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:27:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:27:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 232 proven. 252 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:27:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:27:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719291544] [2024-11-13 16:27:59,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719291544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:27:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653438591] [2024-11-13 16:27:59,754 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:27:59,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:27:59,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:27:59,756 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:27:59,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-13 16:28:02,143 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-13 16:28:02,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:28:02,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:28:02,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:28:03,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 253 proven. 231 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:28:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653438591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:04,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-11-13 16:28:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475206131] [2024-11-13 16:28:04,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:04,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 16:28:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 16:28:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 16:28:04,190 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 71 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 16:28:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:28:05,244 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2024-11-13 16:28:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 16:28:05,245 INFO L78 Accepts]: Start accepts. Automaton has has 71 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) Word has length 75 [2024-11-13 16:28:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:28:05,246 INFO L225 Difference]: With dead ends: 156 [2024-11-13 16:28:05,246 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 16:28:05,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 83 SyntacticMatches, 43 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3909 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1953, Invalid=6419, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:28:05,247 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:28:05,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:28:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 16:28:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2024-11-13 16:28:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:28:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-13 16:28:05,417 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 75 [2024-11-13 16:28:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:28:05,417 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-13 16:28:05,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 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 16:28:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-13 16:28:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 16:28:05,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:28:05,418 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:28:05,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-13 16:28:05,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-13 16:28:05,618 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:28:05,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash 764358751, now seen corresponding path program 61 times [2024-11-13 16:28:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998035473] [2024-11-13 16:28:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 210 proven. 274 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:28:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998035473] [2024-11-13 16:28:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998035473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:28:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722240714] [2024-11-13 16:28:06,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:28:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:28:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:06,862 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:28:06,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-13 16:28:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:07,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:28:07,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 231 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:28:07,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 231 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:28:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722240714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:08,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-11-13 16:28:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794462937] [2024-11-13 16:28:08,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:08,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 16:28:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 16:28:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 16:28:08,646 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 71 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 16:28:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:28:09,649 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2024-11-13 16:28:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:28:09,650 INFO L78 Accepts]: Start accepts. Automaton has has 71 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) Word has length 76 [2024-11-13 16:28:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:28:09,651 INFO L225 Difference]: With dead ends: 82 [2024-11-13 16:28:09,651 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 16:28:09,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 84 SyntacticMatches, 44 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4646 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1991, Invalid=6939, Unknown=0, NotChecked=0, Total=8930 [2024-11-13 16:28:09,653 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:28:09,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:28:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 16:28:09,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-13 16:28:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 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 16:28:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-13 16:28:09,844 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 76 [2024-11-13 16:28:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:28:09,844 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-13 16:28:09,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 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 16:28:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-13 16:28:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 16:28:09,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:28:09,845 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:28:09,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-13 16:28:10,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-13 16:28:10,046 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:28:10,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2073017098, now seen corresponding path program 62 times [2024-11-13 16:28:10,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461960497] [2024-11-13 16:28:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:10,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 190 proven. 569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:31,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461960497] [2024-11-13 16:28:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461960497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:28:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044895026] [2024-11-13 16:28:31,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:28:31,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:28:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:31,753 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:28:31,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-13 16:28:32,037 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:28:32,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:28:32,041 WARN L253 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-11-13 16:28:32,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:34,196 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 16:28:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:43,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:28:57,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044895026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:57,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:57,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 71, 49] total 184 [2024-11-13 16:28:57,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902887934] [2024-11-13 16:28:57,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:57,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2024-11-13 16:28:57,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:57,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2024-11-13 16:28:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1557, Invalid=32115, Unknown=0, NotChecked=0, Total=33672 [2024-11-13 16:28:57,965 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 184 states, 184 states have (on average 1.076086956521739) internal successors, (198), 184 states have internal predecessors, (198), 0 states have call successors, (0), 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 16:29:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:20,947 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2024-11-13 16:29:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-13 16:29:20,948 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.076086956521739) internal successors, (198), 184 states have internal predecessors, (198), 0 states have call successors, (0), 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 77 [2024-11-13 16:29:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:20,948 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:29:20,948 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 16:29:20,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16860 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=2710, Invalid=55130, Unknown=0, NotChecked=0, Total=57840 [2024-11-13 16:29:20,950 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 6781 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 6808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:20,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 230 Invalid, 6808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 6781 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-13 16:29:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 16:29:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 81. [2024-11-13 16:29:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.05) internal successors, (84), 80 states have internal predecessors, (84), 0 states have call successors, (0), 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 16:29:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2024-11-13 16:29:21,082 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 77 [2024-11-13 16:29:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:21,082 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2024-11-13 16:29:21,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.076086956521739) internal successors, (198), 184 states have internal predecessors, (198), 0 states have call successors, (0), 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 16:29:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2024-11-13 16:29:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 16:29:21,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:21,083 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:21,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-13 16:29:21,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-13 16:29:21,284 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:21,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 162644799, now seen corresponding path program 63 times [2024-11-13 16:29:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:21,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197243473] [2024-11-13 16:29:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 254 proven. 275 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:29:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197243473] [2024-11-13 16:29:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197243473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:22,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378837314] [2024-11-13 16:29:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:29:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:22,397 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:22,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-13 16:29:23,335 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-13 16:29:23,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:29:23,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 16:29:23,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:29:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 298 proven. 253 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:29:24,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:29:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 276 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:29:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378837314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:29:25,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:29:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50, 49] total 98 [2024-11-13 16:29:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894696031] [2024-11-13 16:29:25,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:29:25,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-13 16:29:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:25,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-13 16:29:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2428, Invalid=7078, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 16:29:25,966 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 98 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 0 states have call successors, (0), 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 16:29:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:27,432 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2024-11-13 16:29:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:29:27,432 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 0 states have call successors, (0), 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 78 [2024-11-13 16:29:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:27,433 INFO L225 Difference]: With dead ends: 162 [2024-11-13 16:29:27,433 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 16:29:27,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 107 SyntacticMatches, 22 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8060 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4953, Invalid=15353, Unknown=0, NotChecked=0, Total=20306 [2024-11-13 16:29:27,435 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:27,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:29:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 16:29:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2024-11-13 16:29:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 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 16:29:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2024-11-13 16:29:27,545 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 78 [2024-11-13 16:29:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:27,545 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2024-11-13 16:29:27,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 0 states have call successors, (0), 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 16:29:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2024-11-13 16:29:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 16:29:27,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:27,546 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:27,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-13 16:29:27,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:27,746 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:27,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash 148170582, now seen corresponding path program 64 times [2024-11-13 16:29:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991627460] [2024-11-13 16:29:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 231 proven. 298 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 16:29:28,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:28,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991627460] [2024-11-13 16:29:28,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991627460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:28,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680472511] [2024-11-13 16:29:28,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:29:28,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:28,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:28,894 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:28,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-13 16:29:29,174 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:29:29,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:29:29,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 16:29:29,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:29:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 253 proven. 276 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 16:29:29,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:29:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 253 proven. 276 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 16:29:30,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680472511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:29:30,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:29:30,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-11-13 16:29:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858589571] [2024-11-13 16:29:30,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:29:30,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-13 16:29:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-13 16:29:30,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=4149, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 16:29:30,905 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 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 16:29:31,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:31,763 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-13 16:29:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 16:29:31,763 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 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) Word has length 79 [2024-11-13 16:29:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:31,764 INFO L225 Difference]: With dead ends: 85 [2024-11-13 16:29:31,764 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 16:29:31,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 88 SyntacticMatches, 46 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5065 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2161, Invalid=7541, Unknown=0, NotChecked=0, Total=9702 [2024-11-13 16:29:31,766 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:31,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:29:31,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 16:29:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-13 16:29:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-11-13 16:29:31,876 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 79 [2024-11-13 16:29:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:31,876 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-11-13 16:29:31,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 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 16:29:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-11-13 16:29:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 16:29:31,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:31,876 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:31,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-13 16:29:32,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:32,077 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:32,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 299986143, now seen corresponding path program 65 times [2024-11-13 16:29:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:32,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707803012] [2024-11-13 16:29:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 142 proven. 686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:57,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707803012] [2024-11-13 16:29:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707803012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688681599] [2024-11-13 16:29:57,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:29:57,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:57,858 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:57,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-13 16:30:06,777 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-13 16:30:06,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:30:06,798 WARN L253 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 307 conjuncts are in the unsatisfiable core [2024-11-13 16:30:06,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:07,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:30:07,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 16:30:07,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:07,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 16:30:07,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:07,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-13 16:30:07,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:07,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 16:30:07,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:07,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-13 16:30:07,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:07,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-13 16:30:08,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:08,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-13 16:30:08,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:08,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-13 16:30:08,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:08,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-13 16:30:08,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:08,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-13 16:30:09,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:09,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 82 treesize of output 108 [2024-11-13 16:30:09,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:09,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 89 treesize of output 118 [2024-11-13 16:30:09,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:09,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 96 treesize of output 128 [2024-11-13 16:30:09,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:09,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 107 treesize of output 131 [2024-11-13 16:30:10,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:10,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 103 treesize of output 138 [2024-11-13 16:30:10,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:10,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 110 treesize of output 148 [2024-11-13 16:30:10,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:10,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 117 treesize of output 158 [2024-11-13 16:30:11,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:30:11,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 136 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 161 [2024-11-13 16:30:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:30:27,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 16:30:46,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688681599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:46,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:46,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 51] total 193 [2024-11-13 16:30:46,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147545303] [2024-11-13 16:30:46,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:46,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-13 16:30:46,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-13 16:30:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1590, Invalid=35466, Unknown=0, NotChecked=0, Total=37056 [2024-11-13 16:30:46,708 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 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 16:31:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:31:15,910 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2024-11-13 16:31:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-13 16:31:15,911 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 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 80 [2024-11-13 16:31:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:31:15,911 INFO L225 Difference]: With dead ends: 112 [2024-11-13 16:31:15,911 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 16:31:15,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19289 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=2929, Invalid=64931, Unknown=0, NotChecked=0, Total=67860 [2024-11-13 16:31:15,913 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6872 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 6936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 6872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:31:15,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 249 Invalid, 6936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 6872 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-13 16:31:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 16:31:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2024-11-13 16:31:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 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 16:31:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2024-11-13 16:31:16,043 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 80 [2024-11-13 16:31:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:31:16,044 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2024-11-13 16:31:16,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 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 16:31:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2024-11-13 16:31:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 16:31:16,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:31:16,044 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:16,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-13 16:31:16,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:16,245 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:31:16,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash 711301238, now seen corresponding path program 66 times [2024-11-13 16:31:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:16,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226849264] [2024-11-13 16:31:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:16,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 277 proven. 299 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-13 16:31:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226849264] [2024-11-13 16:31:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226849264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120560849] [2024-11-13 16:31:17,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:31:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:17,441 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-13 16:31:19,774 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-13 16:31:19,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:31:19,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 16:31:19,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 323 proven. 276 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:31:20,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 300 proven. 299 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 16:31:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120560849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:22,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:22,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 52, 52] total 79 [2024-11-13 16:31:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083802877] [2024-11-13 16:31:22,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:22,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-13 16:31:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-13 16:31:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4749, Unknown=0, NotChecked=0, Total=6162 [2024-11-13 16:31:22,011 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 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 16:31:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:31:23,144 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2024-11-13 16:31:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:31:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 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 81 [2024-11-13 16:31:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:31:23,146 INFO L225 Difference]: With dead ends: 168 [2024-11-13 16:31:23,146 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 16:31:23,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 86 SyntacticMatches, 48 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4882 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2402, Invalid=7900, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 16:31:23,147 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:31:23,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:31:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 16:31:23,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-13 16:31:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:31:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2024-11-13 16:31:23,277 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 81 [2024-11-13 16:31:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:31:23,278 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2024-11-13 16:31:23,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 79 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 16:31:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2024-11-13 16:31:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 16:31:23,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:31:23,278 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:23,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-13 16:31:23,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-13 16:31:23,479 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:31:23,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1170884353, now seen corresponding path program 67 times [2024-11-13 16:31:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399276974] [2024-11-13 16:31:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 253 proven. 323 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-13 16:31:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399276974] [2024-11-13 16:31:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399276974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:24,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252459138] [2024-11-13 16:31:24,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:31:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:24,703 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:24,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-13 16:31:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:25,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 16:31:25,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:31:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 276 proven. 300 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-13 16:31:25,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:31:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 276 proven. 300 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-13 16:31:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252459138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:31:26,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:31:26,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-11-13 16:31:26,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115535707] [2024-11-13 16:31:26,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:31:26,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 16:31:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:31:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 16:31:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=4497, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 16:31:26,754 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 77 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:31:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:31:27,698 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2024-11-13 16:31:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 16:31:27,699 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:31:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:31:27,699 INFO L225 Difference]: With dead ends: 88 [2024-11-13 16:31:27,699 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 16:31:27,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 90 SyntacticMatches, 48 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5502 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2338, Invalid=8168, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 16:31:27,700 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:31:27,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:31:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 16:31:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-13 16:31:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 0 states have call successors, (0), 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 16:31:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-11-13 16:31:27,821 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 82 [2024-11-13 16:31:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:31:27,822 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-11-13 16:31:27,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:31:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-11-13 16:31:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 16:31:27,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:31:27,822 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:31:27,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-11-13 16:31:28,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-13 16:31:28,023 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:31:28,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:31:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1936011178, now seen corresponding path program 68 times [2024-11-13 16:31:28,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:31:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642616591] [2024-11-13 16:31:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:31:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:31:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:31:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 231 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:31:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:31:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642616591] [2024-11-13 16:31:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642616591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:31:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909139402] [2024-11-13 16:31:57,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:31:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:31:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:31:57,783 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:31:57,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-13 16:31:58,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:31:58,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:31:58,113 WARN L253 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 249 conjuncts are in the unsatisfiable core [2024-11-13 16:31:58,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:32:01,048 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 16:32:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:32:12,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:32:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-13 16:32:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909139402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:32:32,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:32:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 77, 53] total 200 [2024-11-13 16:32:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238423714] [2024-11-13 16:32:32,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:32:32,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2024-11-13 16:32:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:32:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2024-11-13 16:32:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1810, Invalid=37990, Unknown=0, NotChecked=0, Total=39800 [2024-11-13 16:32:32,873 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 200 states, 200 states have (on average 1.07) internal successors, (214), 200 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:33:02,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:33:02,621 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-13 16:33:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 16:33:02,621 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 1.07) internal successors, (214), 200 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-13 16:33:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:33:02,622 INFO L225 Difference]: With dead ends: 116 [2024-11-13 16:33:02,622 INFO L226 Difference]: Without dead ends: 112 [2024-11-13 16:33:02,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20111 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=3171, Invalid=65735, Unknown=0, NotChecked=0, Total=68906 [2024-11-13 16:33:02,626 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 8516 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 8537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:33:02,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 300 Invalid, 8537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 8516 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-13 16:33:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-13 16:33:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 87. [2024-11-13 16:33:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 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 16:33:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-13 16:33:02,864 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 83 [2024-11-13 16:33:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:33:02,865 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-13 16:33:02,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 1.07) internal successors, (214), 200 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:33:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-13 16:33:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 16:33:02,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:33:02,866 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:33:02,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-13 16:33:03,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e44a4c8-18dc-48ce-9fa4-651c1a9cc5a8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-13 16:33:03,069 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:33:03,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:33:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash 114861023, now seen corresponding path program 69 times [2024-11-13 16:33:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:33:03,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423948276] [2024-11-13 16:33:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:33:03,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:33:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat